Artykuły w czasopismach na temat „Mine rescue work”
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Costa, Cristian, Lucian Lupu i Eduard Edelhauser. "Physical Training Methods For Mine Rescuers In 2015". ACTA Universitatis Cibiniensis 66, nr 1 (1.07.2015): 23–28. http://dx.doi.org/10.1515/aucts-2015-0021.
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Abstract We have studied physical mine rescue training programs and health-related and rescue-related fitness tasks during a mine rescue competition, made in China and Australia and on these basis we have design our own pre physical training method. We have stored the heart rate measured in bites per minute (bpm) during the 2012 year periodical training for 21 mine rescuers. We have designed a physical training procedure based on six training models: Body Building, Method of isometric efforts, Method of Interval Training, Volume variation method, Structured method for basic grip and release and Specific work method. Then we measured again during the 2014 year periodical training, the heart rate for the same mine rescuer having the physical training procedure performed before. We have notice that the trained person have now lower bpm, during the tests that could represent better performances during the rescue actions. Our research were made in the Laboratory for Risk-Rescue Operations of the INCD INSEMEX Petroşani, Romania.
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Ran, Hongyu. "Psychological Curriculum Design of Mine Rescue Crew based on BOPPPS". BCP Social Sciences & Humanities 16 (26.03.2022): 321–26. http://dx.doi.org/10.54691/bcpssh.v16i.480.
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In order to scientifically formulate psychological training courses for mine emergency rescue teams, and improve the psychological quality of mine emergency rescue team members, we adopt literature methods, expert interviews, field trips and other research methods, and take the psychological training courses for mine rescue teams as the research object. Analyze the existing problems and course limitations of the psychological training of the mine emergency rescue team, apply the BOPPPS teaching mode to the psychological curriculum design of the mine emergency rescue team, and design the corresponding design according to the six major links of the BOPPS teaching mode in combination with the work characteristics of the mine rescue team In teaching activities, a set of scientific psychological training curriculum system is proposed to provide a reference for more scientific and reasonable psychological training of mine emergency rescue teams.
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Dehnert, Jörg, Jens Stopp, Peter Windisch i Bernd Schönherrt. "Quick-Erect Stopping System for Radiation Protection and Mine Rescue in Small-scale Mining". Mining, Metallurgy & Exploration 37, nr 6 (23.07.2020): 1807–17. http://dx.doi.org/10.1007/s42461-020-00261-2.
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AbstractThe Quick-Erect Stopping System (QESS) offers a new way of reducing the radon exposures of miners in Germany, especially during remediation work in old mines. The QESS is a light-weight, modular, and reusable construction kit of interlocking telescopic aluminum tubes, radon-proof foil, and expanding foam. It is designed to seal off radon-rich parts of galleries within only a few minutes. Originally, the QESS was developed to protect miners against radon exposures. Then, the QESS found the attention of several mine rescue teams at a German mining conference. The Student Mine Rescue of the Technical University Bergakademie Freiberg and the Wismut Mine Rescue carried out first mine rescue drills in Freiberg and Schlema. Additionally, a mine rescue drill was carried out by the Front Range Mine Rescue in the Edgar Experimental Mine of the Colorado School of Mines. These drills helped to improve the system and highlighted its potential for mine rescue operations. Now, the QESS is well-suited for small-scale mining. The QESS can be used to seal off galleries in only a few minutes to both protect miners from radon exposures and to support mine rescue operations. Moreover, the QESS was also successfully used in ventilation experiments.
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Yevstratenko, Ihor, Vitaliy Riasnyi, Serhii Chukharev i Myroslava Kucheruk. "THE CURRENT STATUS OF THE MECHANICAL EQUIPMENT OF THE MINING RESCUE (EMERGENCY AND RESCUE) SERVICE AND ITS SIGNIFICANCE IN IMPROVING THE LABOR SAFETY OF MINERS". Naukovyi visnyk Donetskoho natsionalnoho tekhnichnoho universytetu, nr 1-2 (2022): 45–55. http://dx.doi.org/10.31474/2415-7902-2022-1(8)-2(9)-45-55.
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Purpose. To obtain reasonable characteristics of mobile means of mine-rescue equipment used in emergencies in underground mining to deliver it to the scene and evacuate injured personnel, which comprehensively increases efficiency and safety of work of both rescuers and miners. Methodology. Analysis of literary sources, technical documentation and the practice of using mining rescue equipment in the conditions of underground mining. Results. The analysis of the physical (energy) losses of rescuers during reconnaissance, emergency rescue operations, liquidation of the consequences of accidents, and the conducted research have allowed us to determine the technical characteristics of mobile means for delivering mine rescue equipment to the accident site and evacuating the victims of the accident through horizontal and vertical mine workings. The performed works have made it possible significantly increase the level of emergency protection of mining enterprises and occupational safety of miners, facilitate the work of personnel and, ultimately, the improve efficiency and reliability of the entire mining rescue service. Scientific novelty. The article proves that only a comprehensive approach to the development of mobile mining rescue equipment can provide an effective technological solution in the development of such equipment. Practical significance. Special vehicles developed for mining rescue units are suitable for operation in underground mining conditions. New technical solutions make it possible to transport rescue equipment in horizontal and vertical mines, which saves time and the health of mine rescuers. Developed and tested emergency and rescue technical means intended for mechanization during emergency and rescue operations in vertical shafts of mines, as well as during the performance by mine rescuers of technological works related to the inspection of the condition, for example, of ventilation shafts of mines that are not equipped with mechanized lifts. The reception commission confirmed the functionality of the developed equipment, its compliance with its intended purpose, and recommended the developed equipment for mass implementation both at enterprises and in units of the paramilitary mining and rescue service.
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Qin, Yu Xin, Yu Qing Wang, Xiao Jing Chen i Zhi Guo Li. "An Overview of Coal Mine Rescue Robot and its Navigation". Applied Mechanics and Materials 365-366 (sierpień 2013): 788–94. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.788.
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After the coal-mine accident, to get information of the coal-mine accident has become the key of disaster rescue and relief, and after disaster, the environment is very bad, the rescue-workers cant arrive at the scene of the accident to obtain information at the first time, so the coal-mine rescue robot was brought into being, it can reach the place where the person hard to go to implement the detection of information and rescue. This paper introduces the research status of coal-mine rescue robot. According to the different methods of navigation, this paper explained the research progress of the methods for robot navigation, and made a summary and prospect for its potential applications and future research work.
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Ma, Xiliang, i Hua Zhu. "Gas Concentration Prediction Based on the Measured Data of a Coal Mine Rescue Robot". Journal of Robotics 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/6858970.
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The coal mine environment is complex and dangerous after gas accident; then a timely and effective rescue and relief work is necessary. Hence prediction of gas concentration in front of coal mine rescue robot is an important significance to ensure that the coal mine rescue robot carries out the exploration and search and rescue mission. In this paper, a gray neural network is proposed to predict the gas concentration 10 meters in front of the coal mine rescue robot based on the gas concentration, temperature, and wind speed of the current position and 1 meter in front. Subsequently the quantum genetic algorithm optimization gray neural network parameters of the gas concentration prediction method are proposed to get more accurate prediction of the gas concentration in the roadway. Experimental results show that a gray neural network optimized by the quantum genetic algorithm is more accurate for predicting the gas concentration. The overall prediction error is 9.12%, and the largest forecasting error is 11.36%; compared with gray neural network, the gas concentration prediction error increases by 55.23%. This means that the proposed method can better allow the coal mine rescue robot to accurately predict the gas concentration in the coal mine roadway.
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Golik, A. S., V. B. Popov, A. S. Yaroch i O. A. Sergeev. "ON LEGAL PROTECTION OF RESCUE WORK ORGANIZERS DURING MINE ACCIDENTS’ ELIMINATION". Bulletin of Research Center for Safety in Coal Industry (Industial Safety) 90 (25.09.2020): 9–52. http://dx.doi.org/10.26631/arc3-2020-49-52.
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Lu, Wen Tao, Guo Huan Lou, Shu Sheng Zhang i Chun Ming Yang. "Design and Application of Mine-Used Underwater Explosion-Proof Robot". Applied Mechanics and Materials 494-495 (luty 2014): 1060–63. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1060.
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For the demand of coal mine flood accident emergency rescue, in this paper, a mine-used underwater explosion-proof robot is presented and the composition structure and design method of the robot are discussed in detail. This device combines mechanical design, underwater power plant, intelligent control, energy supply of mobile device and mine explosion-proof technology. It can cruise underwater with the changeable depth, orientation and speed. It can move flexibly and can collect underwater and overwater images. Practical application shows that this equipment is suitable for the emergency rescue and disaster relief work after the coal mine flood.
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Zhai, Xiaowei, Shibo Wu, Kai Wang, Xiaokun Chen i Haitao Li. "A Novel Design of Rescue Capsule considering the Pressure Characteristics and Thermal Dynamic Response with Thermomechanical Coupling Action Subjected to Gas Explosion Load". Shock and Vibration 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/5261309.
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To ensure the structural safety and reliability of coal mine rescue capsule in disastrous surroundings after gas explosion, in this paper, the thermomechanical coupling effect on a certain structure subjected to gas explosion was analyzed, and then a novel rescue capsule with a combination of radius and square features was designed according to the underground surroundings and relevant regulations on mine rescue devices. Foremost, the coupling mechanism of thermal-fluid-solid interaction between gas explosion shock wave and rescue capsule and the thermal dynamic response of the capsule subjected to explosion load of gas/air mixture was investigated and revealed by employing LS-DYNA. The variation laws and characteristics of stress field, displacement field, and temperature field of the capsule were analyzed based on the simulation results. Results show that the structural safety, tightness, and reliability of the capsule meet the requirements of the national safety regulations. The design method presented in this work provides a new thought for design of coal mine rescue capsule.
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Gireada, Andrei, Daniel Pupazan i Alin Irimia. "Research on Factors Influencing Professional Selection of Mine Rescuers". MATEC Web of Conferences 389 (2024): 00060. http://dx.doi.org/10.1051/matecconf/202438900060.
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High variation of efforts in the rescue activity entails very difficult demands in nature or intensity, but however limited they may be in the work process, they have an impact on the whole body. The predominance of body functions that are engaged in a professional activity, imprints the characteristics of work capacity. Thus, in the work capacity of underground personnel, whose activity requires a predominant physical effort, a main role is played by the locomotor apparatus and the kinaesthetic analyser and only secondarily by the visual and optical analysers. In the activity of rescue in toxic/explosive/flammable environments, physical and neuro-psychological demands intertwine and combine in an infinite number of variants. The paper will present the work capacity of the rescuers which is determined by a large number of factors: physiological factors, psychological factors, work environment and socio-economic factors.
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Kobylkin, I. E., i S. S. Arzhanov. "Methodology for assessing safe distances in case of explosions of dump truck tyres in open pit". Mining Industry Journal (Gornay Promishlennost), nr 3/2021 (20.07.2021): 123–29. http://dx.doi.org/10.30686/1609-9192-2021-3-123-129.
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A fire of a mining dump truck increases the risk of tyre explosion. Mining equipment is extinguished by auxiliary mine rescue crew and mine rescuers who approach it at an unsafe distance. A tyre explosion creates a number of additional hazards that can lead to serious injury or loss of life. Studies indicate that such injuries primarily include barotrauma, eye and general bodily injuries caused by the impact of destroyed wheel elements. A methodology for calculating safe distances is required to ensure the safety of rescue work in open pit mines and quarries. The proposed methodology for estimating safe distances, which was developed based on conditions of a pressure vessel explosion, will reduce the risk of injuries to mine rescuers and members of auxiliary mine rescue crews. The use of existing protective equipment or development of new ones is justified by the presented analysis of injuries such as temporary loss of hearing, eardrum ruptures, brain contusions, loss of consciousness, internal injuries, dislocations, broken limbs and other types of injuries that are caused by tyre explosions.
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Li, Leilei, Deyong Guo, Yi Wang, Ke Wang i Runan Lian. "Anatomy of Mine Rescue Teams’ Casualty Incidents: A Basis for Medical Emergency Preparedness and Injury Prevention". Disaster Medicine and Public Health Preparedness 13, nr 4 (5.03.2019): 695–99. http://dx.doi.org/10.1017/dmp.2018.140.
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ABSTRACTObjectiveMine rescue teams bear a high risk of injury. To improve medical emergency preparedness and injury prevention, this work analyzed the causes and severity of mine rescue teams’ casualty incidents, the primary injuries, and the link between the causes and the occurrences of the casualty incidents.MethodsA total of 81 cases from 1953 to 2013 were used to analyze the casualty incidents of mine rescue teams based on the frequency of accidents. A panel with 4 rescue experts was set up to ensure the accuracy of the analysis.ResultsThe 81 casualty incidents occurred in 7 types of rescue work and were due to 6 causes. Organizational and personal factors were the leading cause, followed by rescue skill and equipment factors. Problems with decision-making and command have gradually become the primary inducement of casualty incidents in recent years, with an average death toll reaching up to 6 to 7 people. The main injuries causing death to team members were blast injury, burns, poisoning, suffocation, blunt trauma, and overwork injury. Some of the injured died because of medical emergency response failure.ConclusionThe construction of emergency medical teams and the preparedness of disaster medicine need to be improved to reduce the mortality of the injured team members. Actions according to the causes of casualty incidents should be adopted for injury prevention. (Disaster Med Public Health Preparedness. 2019;13:695–699)
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Liu, Zheng. "The Hardware Design of Control System of Coal Mine Detection Robot AC Servo Drive". Applied Mechanics and Materials 556-562 (maj 2014): 2229–32. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2229.
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Currently, more than 100 million anti- personnel mines are under the ground all over the world. These mines not only disturb the economic development of mine- buried nations, but also injure or kill more than 2000 people a month. As a result, the removal of landmines has become a global emergency. China as one of the largest coal production and consumption country around the world, it is also of the accident occurred frequently country such as fire damp explosion, water burst, catch on fire during the exploitation of coal mine. The research of detecting by coal mine shaft underground explorative robot make the coal mine rescue works implements smoothly, to reduce casualties caused by mine disaster, it will be substituted for or partial substituted for emergency workers to enter the coal mine rescue. Main effect of coal mine detection robot is taking place of human to go into the post- disaster coal mine for detecting information of the environment and sending the information to the command center. Therefore, it is of great significance to research on coal mine detection robot for reducing casualties and unfolding of the saving work smoothly. Researches on the hardware design of control system of servo drive are not only the key technology of the issue, but also the guarantee on completing the detection task of coal mine detection robot. Main work of path planning for coal detection robot are not only to find a safe and collision- free path from the starting point to end point in the environment of post- disaster coal mine with the uncertain obstacles in it but also to make the path shorter and energy consumed less. The implementation of control system of coal mine detection robot AC servo drive can achieve many tasks, such as motion control, environmental information acquisition, communication with the remote control system and executing complex control algorithms.
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Zhao, Haojiang, i Wei Yang. "An emergency rescue communication system and environmental monitoring subsystem for underground coal mine based on wireless mesh network". International Journal of Distributed Sensor Networks 14, nr 10 (październik 2018): 155014771880593. http://dx.doi.org/10.1177/1550147718805935.
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According to the characteristics of the underground coal mine roadway structure and disaster environment, this article proposes an underground emergency rescue communication system based on wireless mesh network and its corresponding environmental monitoring subsystem. We design the structures of the emergency rescue communication system and the wireless mesh nodes. The nodes are designed with intrinsic safety features. The work also develops wireless multi-parameter environmental monitoring terminals, and sets up the software platform for the environmental monitoring subsystem. The developed underground coal mine emergency rescue communication system based on wireless mesh network and environmental monitoring subsystem are tested both on the ground and in a real underground roadway environment. Experimental results from the testing show that the signal strength is -45 dBm on average, and the bandwidth attenuation of each hop is less than 10%, the transmission delay after the 11th hop is only 14 ms. The developed emergency rescue communication system is functionally stable, the environmental monitoring subsystem is capable of performing real-time monitoring of various underground environmental parameters, and achieves high accuracy in monitoring.
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Szrek, Jarosław, Radoslaw Zimroz, Jacek Wodecki, Anna Michalak, Mateusz Góralczyk i Magdalena Worsa-Kozak. "Application of the Infrared Thermography and Unmanned Ground Vehicle for Rescue Action Support in Underground Mine—The AMICOS Project". Remote Sensing 13, nr 1 (27.12.2020): 69. http://dx.doi.org/10.3390/rs13010069.
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Extraction of raw materials, especially in extremely harsh underground mine conditions, is irrevocably associated with high risk and probability of accidents. Natural hazards, the use of heavy-duty machines, and other technologies, even if all perfectly organized, may result in an accident. In such critical situations, rescue actions may require advanced technologies as autonomous mobile robot, various sensory system including gas detector, infrared thermography, image acquisition, advanced analytics, etc. In the paper, we describe several scenarios related to rescue action in underground mines with the assumption that searching for sufferers should be done considering potential hazards such as seismic, gas, high temperature, etc. Thus, possibilities of rescue team activities in such areas may be highly risky. This work reports the results of testing of a UGV robotic system in an underground mine developed in the frame of the AMICOS project. The system consists of UGV with a sensory system and image processing module that are based on an adaptation of You Only Look Once (YOLO) and Histogram of Oriented Gradients (HOG) algorithms. The experiment was very successful; human detection efficiency was very promising. Future work will be related to test the AMICOS technology in deep copper ore mines.
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Qi, Yan Jun, Wen Li Ji i Qiang Li. "Analysis and Design of Monitoring System in Coal Mine Based on Internet of Things". Applied Mechanics and Materials 268-270 (grudzień 2012): 1902–5. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1902.
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Perceived work environment in coal mine is part of the intelligent management of modern mine. Based on the existing backbone network, combined with the Internet of Things technologies, the architecture and functionality of the downhole monitoring system are presented. Hardware design of sensors and the principle of downhole location are analyzed. Describe the system features of anti-interference, higher warning level, high work efficiency. For receiving the data of downhole environment and location of workers, managers can carry out intelligent management and decision-making in emergency rescue and production decisions.
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Li, Xiao Ming, Xiang Hui Xu, San Qiao Yao, Jia Li, Ru Zhu Wang, Yuan Liu, Yu Ping Bai i Yu Lan Jin. "Stepwise Regression Analysis of Work Locus of Control and Stress in Mine Emergency Rescuers". Applied Mechanics and Materials 340 (lipiec 2013): 245–49. http://dx.doi.org/10.4028/www.scientific.net/amm.340.245.
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Objective to study the mine emergency rescuers occupational stress and work locus of control relationship Methods Work locus of control has been measured by using the WLCS scale. The occupational stress instrument has been employed to investigate the stressors, personalities, social support, and coping strategies as well as the subjects age, length of service, sex, educational level and marriage status. The stepwise regression analysis was used for testing the difference of stressors among the groups with different scores of work locus of control. Results the occupational stress reactions influencing factors who were entered predictive model and R2 were different between internal control group and external control group. Conclusion When the level of work locus of control are different, there are different level of occupational stress in mine emergency rescue workers.
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Domrachev, A. N., V. G. Krivolapov, D. Yu Paleev i I. M. Pozdeeva. "ESTIMATION OF COMPLICATING FACTORS INFLUENCE ON LABOUR INTENSITY AND SEALS CONSTRUCTION PERIOD". News of the Tula state university. Sciences of Earth 4, nr 1 (2021): 357–64. http://dx.doi.org/10.46689/2218-5194-2021-4-1-357-364.
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In this paper the methodology for increasing the management efficiency of seals con-struction by using cognitive work analysis is described. The results of cognitive modeling such as a way to reduce labour intensity and seals construction period during the mine rescue oper-ations focused on sealing entries and gob areas are obtained.
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Dubrovskaya, Yulia A., Gennady V. Rudenko i Leonid V. Pikhkonen. "A set of special exercises for the formation of professionally significant physical qualities of mine rescuers". Vestnik Tomskogo gosudarstvennogo universiteta, nr 483 (2022): 175–82. http://dx.doi.org/10.17223/15617793/483/20.
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The aim of the study is to describe the methodology for applying an adapted set of training exercises for the formation of professionally significant physical qualities of mine rescuers, using standard equipment of sports halls of universities as part of practical classes in physical culture and sports. Based on the analysis of the current standards for the physical training of mine rescuers and the six-year experience of practical training of students in the Mining specialty, the Technological Safety and Mine Rescue focus (profile) from 2013 to 2018, on simulators in paramilitary mine rescue teams, we selected elements of special physical exercises, which, without any difficulties, can be included in the general set of exercises in the disciplines (modules) of physical culture and sports in all courses of study in the above or related specialties. Based on the results of the experiment, we made the following conclusions. The work of mine rescuers is unique in its physical requirements. They must have a high level of fitness in order to perform professional tasks with high quality and intensity over a relatively long period compared to other emergency services. The physical readiness of mine rescuers should include the following professionally significant and specific physical and psychophysical qualities: speed of reaction; coordination and reflex dexterity; flexibility; power static endurance; dynamic indicators of the body; accuracy of movements; muscle strength; motor reaction; overcoming fear of heights, fear of closed space; psychophysical stability and survival in extreme conditions. These qualities must be formed and developed in the process of regular training and special exercises, starting from the first year, as part of the educational process in the disciplines of physical culture and sports, and elective disciplines in physical culture and sports. The effectiveness of the set of special exercises in physical culture and sports for the formation and development of professionally significant skills of mining engineers-rescuers was experimentally proven. Specialized physical training in the sports hall of the university will lay the foundation for the formation of professionally significant qualities of a mine rescuer, form an understanding of the importance of their development, and help to determine the functional reserves of the body for the effective implementation of tasks in extreme situations.
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Feng, Jian Guo, Shu Li Wang, Shuai Yuan i Cheng Yuan Bian. "New Type of Disaster Rescue Robot". Applied Mechanics and Materials 364 (sierpień 2013): 357–60. http://dx.doi.org/10.4028/www.scientific.net/amm.364.357.
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With the accelerated pace of industrialization, information society, the applications of robot is very extensive. Based on rescue robot data studied at home and abroad, they are single function, low efficiency. After the actual research and analysis, the design is a kind of small size, multi-function, high efficiency and long-distance transport convenience intelligent robot. According to the outgoing field image the robot sent back, the operator uses a wireless remote control device, which delivers specific instructions to the robot to start relief work at the scene. The new type rescue robot has two multifunctional pneumatic arm, the left arm has five degrees of freedom and the right one has four. The arms can snatch, cut, crushed and so on. The new robot can not only be applied to both earthquakes, landslides, mudslides and other natural disasters on-site rescue jobs, also can be used for counter-terrorism, riot control, reconnaissance, mine and other dangerous conditions.
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Grodzicka, Aneta, Franciszek Plewa, Marcin Krause, Andrzej Figiel i Magdalena Rozmus. "Selection of Employees for Performing Work Activities in Currently Used Ventilation Systems in Hard Coal Mining". Energies 15, nr 2 (6.01.2022): 408. http://dx.doi.org/10.3390/en15020408.
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The way in which rescue actions are carried out in a hard coal mine is conditioned by a number of factors, including the type, scale, and location of the hazard; location of employees at the danger and level of their endangerment; and the ventilation system used in the impacted area. In this article, the importance and necessity to take into account a human factor, specifically the propensity for risky behavior, alongside the selection of rescuers for rescue action is pointed out. As an introduction to the key research studies presented in this article, main ventilation systems used in hard coal mines are described and three real cases of natural hazard occurrences in hard coal mines are discussed. An analysis of these events has shown that the degree of difficulty of a rescue action depends, among other aspects, on the ventilation system applied. Next, a study covering a synthetic assessment of 25 mining rescuers taking into account the ‘risky behavior’ parameter is presented. The results were interpreted considering the—described earlier—cases of hazard occurrence in coal mines and ventilation systems applied there. For the research sample, a selection of rescuers to carry out actions in particular types of ventilation systems, taking as a criterion the mark they obtained in the synthetic assessment, is proposed.
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BhaskarPhani Ram, G., Dr L. Koteswara Rao, Eliyaz Mahammad i A. Bhanuchander. "Coal mine disaster management robot using IoT technology". International Journal of Engineering & Technology 7, nr 3 (26.06.2018): 1204. http://dx.doi.org/10.14419/ijet.v7i3.12294.
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One of the current trends in technology is an IoT. IoT stands for Internet of Things. It is interpreted as the communication between devices using IP address. Usage of IoT technology in coal mines reduces the number of untoward incidents. Rescue operation in coal mine deals with the risky mission. The work force inside the mine doesn’t know some explosions taking place in the proximity of mines. The rescue team also cannot understand the conditions inside the mine. The environmental parameters include toxic gases, excessive temperature, Methane leakage as well as the Oxygen. Information from the deployed sensor is transmitted to the control room through Wi-Fi. In order to address the problems in real life conditions prevailing inside the coal mine, we propose a new method to extract the related information and process the same to alert the people who are working in the vicinity of the mine. For this purpose, a framework is designed using a robotic machine integrated with the raspberry pi3 version. A camera is used in the robot so that the live video is transmitted to the Control room. A cooling fan is deployed to reduce the temperature whenever the value exceeds the threshold level. The workers get an alarm through buzzer whenever any hazardous gas is detected. The robot is controlled by means of navigation buttons, which are in turn managed internally by web server.
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Fu, Hui, Shan Jun Mao i Yun Xiu Luo. "Mine Water Irruption Flooding Spread Route Generation Algorithm Based on Directed Graph". Applied Mechanics and Materials 268-270 (grudzień 2012): 1894–97. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1894.
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In view of roadway complex spatial relationships, the lack of visual expression in the mine water prevention and control work, this paper gives the water irruption flooding spread generation algorithm. Based on building tree topology from water inrush starting point extension and simulating of water down to spread and water level to rise, the algorithm generates flooding route and establishes water inrush 3D simulation system. It provides scientific basis for developing disaster relief route optimization and emergency rescue decision-making.
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Kokoulin, Ivan, Tetiana Bunko, Ihor Yashchenko, Ruslan Papirnyk, Anatolii Belikov, Vadym Myroshnychenko i Oleksandr Otchenashev. "Identification of zones of influence of exogenous fire damaging factors". E3S Web of Conferences 168 (2020): 00049. http://dx.doi.org/10.1051/e3sconf/202016800049.
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In this work, topological configuration of dangerous zone in the mine ventilation network and concentrations of fire gases in it are estimated and identified at vent impacting on the emergency conditions. The obtained information on gas-dynamic state of the mine ventilation network at a current moment of time is used for undertaking primary measures according to the plan of accident response: emergency evacuation of people and actions of militarized mine-rescue services for eliminating emergency at its initial stage with taking into account changed emergency ventilation mode. The proposed method allows identifying an area in the mine contaminated by combustion products with taking into account time of its formation, changes in ventilation mode during the accident and possible air stream reversal in zones with descentional ventilation under the influence of the fire source depression and formation of zones with fire gas recirculation. With implementation of this method, it becomes possible to improve accuracy of detecting gassy zones in the ventilation network and effectiveness of emergency response.
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Chernyuk, V. I., O. I. Soloviov, J. V. Kudievsky, I. A. Evstratenko i R. S. Makareiko. "Peculiarities of work conditions of employees of main professions of the state militarized mine-rescue (emergency- rescue) squad of the state emergency service of Ukraine". Ukrainian Journal of Occupational Health 2017, nr 4 (29.12.2017): 12–24. http://dx.doi.org/10.33573/ujoh2017.04.012.
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Li, Min, i Xiankang Cheng. "Identification and Prediction of Thermodynamic Disasters During Deep Coal Mining". International Journal of Heat and Technology 40, nr 6 (31.12.2022): 1447–53. http://dx.doi.org/10.18280/ijht.400612.
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Researching the methods to identify and predict thermodynamic disasters during deep coal mining is a very important work for the design of mine emergency systems and the decision-making of mine rescue and personnel evacuation, however, existing studies only built static models without evaluating or predicting the development trend of thermodynamic disasters, the research on dynamic modeling methods and rescue decision-making is insufficient, and they generally ignored the mechanism of mutual conversion between fire and gas explosion in deep coal mines. Thus, this paper aims to study the identification and prediction of thermodynamic disasters during deep coal mining. At first, the method for analyzing the thermal field in deep coal mining areas is introduced in detail, and the finite element thermal analysis method is adopted to study the thermodynamic disasters during deep coal mining; then, this paper establishes a thermodynamic disaster prediction model based on the improved Kernel-based Extreme Learning Machine (KELM), and introduces the improved Crow Search Algorithm (CSA) to solve the instability of prediction results caused by artificial selection of model parameters. At last, this paper uses experimental results to verify the validity of the proposed model.
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Kobylkin, S. S., A. S. Kobylkin, S. V. Balovtsev i A. R. Kharisov. "Science-based solutions on the development of instructions for an emergency response plan for open-pit mines". Mining informational and analytical bulletin, nr 6-1 (20.05.2020): 84–98. http://dx.doi.org/10.25018/0236-1493-2020-61-0-84-98.
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At present, in the Russian Federation there are no legislatively approved recommendations on the procedure, structure and requirements for the design of an emergency response plan for coal open-pit mines. Therefore, the development of this document at the mining enterprises is carried out independently, coordinating it with emergency response services serving the hazardous production facility. The absence of regulatory documents forces the enterprise management to make decisions on the structure of the document, forms and its content. This can lead to errors in conducting mine rescue operations when attracting additional forces and means from other units of rescue units. The relevance of creating a single document for everyone to draw up a plan for the elimination of accidents at sections has been repeatedly noted at production meetings with the participation of scientists, specialists from surveillance services and representatives of rescue units. In order to increase the emergency preparedness of enterprises, on the basis of studies of the current regulatory documentation of Rostechnadzor, the EMERCOM of the Russian Federation, Mines Rescue Service and scientific literature, an algorithm was developed for compiling submarines for coal open-pit mines. The analysis of accidents at the coal open-pit mines of the country made it possible to create a list of types of accidents encountered. Based on this, instructions have been developed for the actions of all workers in the mine for the initial period in the event of an accident. Taking into account the existing standard forms for coal mines, the developed document forms for open pits were developed, this will make it possible to unify emergency rescue operations regarding the preparation of documents. Scientifically sound solutions can be used to develop a plan for the elimination of accidents in the future at all mining enterprises engaged in open mining. The results of the work expand knowledge in the field of safety of coal open pit mining.
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Wang, Lin-Lin, i Li-Xin Pan. "Research on SBMPC Algorithm for Path Planning of Rescue and Detection Robot". Discrete Dynamics in Nature and Society 2020 (22.11.2020): 1–11. http://dx.doi.org/10.1155/2020/7821942.
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This research aims to improve autonomous navigation of coal mine rescue and detection robot, eliminate the danger for rescuers, and enhance the security of rescue work. The concept of model predictive control is introduced into path planning of rescue and detection robot in this paper. Sampling-Based Model Predictive Control (SBMPC) algorithm is proposed basing on the construction of cost function and predictive kinematics model. Firstly, input sampling is conducted in control variable space of robot motion in order to generate candidate path planning solutions. Then, robot attitude and position in future time, which are regarded as output variables of robot motion, can be calculated through predictive kinematics model and input sampling data. The optimum solution of path planning is obtained from candidate solutions through continuous moving optimization of the defined cost function. The effects of the three sampling methods (viz., uniform sampling, Halton’s sampling, and CVT sampling) on path planning performance are compared in simulations. Statistical analysis demonstrates that CVT sampling has the most uniform coverage in two-dimensional plane when sample amount is the same for three methods. Simulation results show that SBMPC algorithm is effective and feasible to plan a secure route for rescue and detection robot under complex environment.
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Zhou, Nian Yong, Yan Long Jiang, Lei Xu, Jun Li i He Xu Wang. "The Design and Research of Automatic Micro-Pressure Relief Valves Used in Mine Rescue Cabin". Applied Mechanics and Materials 752-753 (kwiecień 2015): 828–32. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.828.
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By analyzing the key technologies of pressure relief valve and comparing the advantages and disadvantages of existing products, liquid sealing automatic micro-pressure relief valve is designed with the properties of adjustable opening pressure, fast response rate, good sealing performance and long life, etc. Also, a reasonable mathematical model of liquid sealing automatic micro-pressure relief valve is developed, and the pressure relief valve’s opening pressure, reset pressure, relief rate and other key performance parameters is obtained. This work wil be helpful for the design and research of automatic micro-pressure relief valves used in mine rescue cabin.
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Chernyuk, V. I., O. I. Soloviev, S. M. Smolanov, A. A. Pilipenko, O. I. Nykyforuk, J. V. Kudiyevsky i K. O. Apykhtin. "Peculiarities of work conditions for the staff of the state military mine-rescue service in coal industry of Ukraine". Ukrainian Journal of Occupational Health 2017, nr 3 (29.09.2017): 3–10. http://dx.doi.org/10.33573/ujoh2017.03.003.
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Zheng, Na. "Program Design of Internet-Based Remote Video Monitoring System of Coal Mining Enterprises". Advanced Materials Research 1044-1045 (październik 2014): 1243–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.1243.
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In the production of coal, once an mine accident happens, timely monitoring and management are need, in order to ensure communication and rescue work. Using remote video monitoring system, ground or central monitoring personnel can conduct current-time underground monitoring, and can find potential accidents before they occur; in addition, personnel can monitor and record intuitively the safety production in underground work site . This paper begins with an overview of the coal mining enterprise remote video monitoring requirements, discusses the overall design, modules formation and implementation of Internet-based remote video monitoring system of coal mining enterprises programs, and finally presents the development and application of Internet-based remote video monitoring system of coal mining enterprises.
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Ma, Ying, Xiao Yu Ma i Guo Dong Wang. "Research on Coal Mine Roadway Safety Monitoring System Based on Zigbee". Applied Mechanics and Materials 88-89 (sierpień 2011): 185–90. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.185.
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With the higher and higher demands to the safety in coal mines and the development of the enterprises themselves, the security problems in coal mines already become the most important ones. Because of many hidden dangers existing in coal mines, the accidents that make the heavy economic losses and personnel casualty occurs frequently in China coal mines. It shows that the existing safety monitoring systems in coal mines has some insufficiencies. By researching on the collection of human physiology information, the design of wireless sensor network node and wireless networking technology, the system applies ZigBee technology into the environment of coal mine roadway safety production, which realizes the detecting of daily work environment of coal mine roadway as well as the real time monitoring of the location and status of the trapped people underground when safety accident happens so as to provide accurate information for rescue.
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Ezhov, Vladislav, Vitaliy Riasnyi, Ihor Yevstratenko, Serhii Chukharev i Valerii Korniyenko. "DEVELOPING RECOMMENDATIONS FOR PREVENTING ACCIDENTS AND EMERGENCIES AT MINING ENTERPRISES IN UKRAINE". Journal of Donetsk Mining Institute 51, nr 2 (2022): 35–42. http://dx.doi.org/10.31474/1999-981x-2021-2-35-42.
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Purpose. To analyse accidents at Ukrainian mining enterprises and to develop recommendations for the prevention of accidents and emergencies. Methodology. Statistical information on operational visits to accidents and emergencies by the paramilitary mine rescue service (PMRS) serving mining enterprises and other information on the state of accidents at mining enterprises in Ukraine was collected and processed. Results. On the base of statistical data provided by the PMRS and other public sources, it was determined that the main accidents and emergencies occurred in 2020 and 2021 at mining enterprises are: fires, collapse and falling of fragments of rock, in-mine and pit transport accidents, accidents caused by the use of the lifting complexes, head frame structures and mine shafts directly. Scientific novelty. The cases of accidents and emergencies at mining enterprises are systematised and measures for their prevention are proposed. Practical significance. Practical recommendations developed for mining enterprises in Ukraine on preventing accidents and emergencies in the underground and open-pit mining of mineral deposits. Priority areas of work for the next years determined for managers of mining enterprises and labour protection services: fire protection of enterprises, safety in use of in-mine and pit transport, control over conditions of lifting complexes and mine shafts; control over the use of power equipment, protection of miners against traumas at collapse in underground mine workings and surface mines, implementation of occupational health and safety training programmes for miners.
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Ezhov, Vladislav, Vitaliy Riasnyi, Ihor Yevstratenko, Serhii Chukharev i Valerii Korniyenko. "DEVELOPING RECOMMENDATIONS FOR PREVENTING ACCIDENTS AND EMERGENCIES AT MINING ENTERPRISES IN UKRAINE". Journal of Donetsk Mining Institute, nr 2 (2022): 35–42. http://dx.doi.org/10.31474/1999-981x-2022-2-35-42.
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Purpose. To analyse accidents at Ukrainian mining enterprises and to develop recommendations for the prevention of accidents and emergencies. Methodology. Statistical information on operational visits to accidents and emergencies by the paramilitary mine rescue service (PMRS) serving mining enterprises and other information on the state of accidents at mining enterprises in Ukraine was collected and processed. Results. On the base of statistical data provided by the PMRS and other public sources, it was determined that the main accidents and emergencies occurred in 2020 and 2021 at mining enterprises are: fires, collapse and falling of fragments of rock, in-mine and pit transport accidents, accidents caused by the use of the lifting complexes, head frame structures and mine shafts directly. Scientific novelty. The cases of accidents and emergencies at mining enterprises are systematised and measures for their prevention are proposed. Practical significance. Practical recommendations developed for mining enterprises in Ukraine on preventing accidents and emergencies in the underground and open-pit mining of mineral deposits. Priority areas of work for the next years determined for managers of mining enterprises and labour protection services: fire protection of enterprises, safety in use of in-mine and pit transport, control over conditions of lifting complexes and mine shafts; control over the use of power equipment, protection of miners against traumas at collapse in underground mine workings and surface mines, implementation of occupational health and safety training programmes for miners.
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Makhnycheva, Yu, i Е. Gordienko. "International Red Cross and Red Crescent". Vrač skoroj pomoŝi (Emergency Doctor), nr 1 (1.01.2020): 38–44. http://dx.doi.org/10.33920/med-02-2001-05.
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The International Committee of the Red Cross (ICRC) is an international independent organization, staff of which provides humanitarian aid to affected and needy people. The ICRC works in armed conflict zones, in areas of natural disasters, natural and technogenic accidents. In peacetime, the organization’s employees fight against physical violence, provide assistance with water supply and improving housing conditions, visit prisoners, monitor the conditions of detention and respect for their rights in addition to large-scale rescue operations. The ICRC's work includes family reunification, humanitarian diplomacy, health care, mine action, economic security and much more. The movement includes the International Committee of the Red Cross, National Red Cross and Red Crescent Societies, and the International Federation of Red Cross and Red Crescent Societies. The management of the ICRC is represented by the Assembly, the Assembly Council, the Directorate. Peter Maurer, President of the ICRC, heads the Assembly Council and the Assembly of the International Committee of the Red Cross.
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V, Pisarenko, Pisarenko J, Gulchak O, Chobotok T i Boyko A. "Practical experience in the technical systems creating with the artificial intelligence elements". Artificial Intelligence 26, jai2021.26(1) (30.06.2021): 95–101. http://dx.doi.org/10.15407/jai2021.01.095.
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The practical experience of solving scientific tasks using artificial intelligence technologies is presented. The authors offered their understanding of the term "artificial intelligence". Describes the development of the dept. №265 of Mathematical Problems of Applied Informatics V.M. Glushkov Institute of Cybernetics of the NAS of Ukraine in the creation of technical systems with elements of AI mainly to work in extreme environments. The purpose of the authors is to provide useful information to develop a strategy for the development of AI in the Ukraine. Some of these studies: monitoring the territory and management of land use technologies using remote sensing technologies from aircraft, spacecraft, unmanned aerial vehicles; monitoring the technical equipment of the underwater environment (technical means of searching for a sunken object of the submarine type for emergency operations are being developed); mine safety control (risk research during mining, creating robotic systems with elements of artificial intelligence for studying the conditions of work in the mine, warning accidents and emergency rescue work). The next direction is the diagnosis and treatment of addictive patients using the principles of therapeutic methods BiofeedBack. Attention is paid to the development of robotic technical systems with AI for servicing cosmic long missions. For this, theoretical studies have been conducted on the creation of a live brain mathematical model for its use in the development of the "artificial brain" of robots. The authors gave a list of tasks that can solve AI in programs for long-term space flights, technologies and systems that should develop in the first place to implement these tasks
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Szkudlarek, Joanna, Grzegorz Owczarek, Marcin Jachowicz i Bartłomiej Zagrodny. "Procedure for Determining Dimensional Allowances for PPE Using 3D Scanning Methods". International Journal of Environmental Research and Public Health 19, nr 4 (19.02.2022): 2397. http://dx.doi.org/10.3390/ijerph19042397.
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The article describes the importance of dimensional allowances, which are a consequence of the use of personal protective equipment (PPE) for work safety. The method of 3D scanning was proposed for determining the dimensional allowances which has been preliminary validated. Two geometric solids (a cylinder and a cuboid) were used to approximate the minimum space around the person using PPE. The solids are a simplified representation of the silhouette of a human subject performing activities in a confined work environment. They also correspond to the typical shapes of access openings and confined spaces, reflecting the real working conditions of welders, firefighters, mine rescuers, and other rescue teams. A detailed analysis of dimensional allowances for a full welding PPE set is provided. Based on the adopted parameters: the dimensions of the body, the base area and the volume, the differences in the dimensions of the body of a person dressed in underwear and in PPE were compared. The results of the presented studies indicate a significant role of dimensional allowances in interactions between persons wearing PPE and the work environment. The results are planned to be implemented in a new anthropometric atlas of human’s measures used for ergonomic design.
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Porsani, Jorge Luís, Felipe Augusto Nascimento de Jesus i Marcelo Cesar Stangari. "GPR Survey on an Iron Mining Area after the Collapse of the Tailings Dam I at the Córrego do Feijão Mine in Brumadinho-MG, Brazil". Remote Sensing 11, nr 7 (10.04.2019): 860. http://dx.doi.org/10.3390/rs11070860.
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This article shows the interesting results of a pioneer effort by IAG/USP researchers to use ground-penetrating radar (GPR) for humanitarian purposes, guiding the rescue of victims in the tragedy of Brumadinho. The tailings Dam I at the Córrego do Feijão iron ore mine, located in the Brumadinho complex, Minas Gerais State, Brazil, collapsed on 25 January 2019. About 11.7 million m3 of mining mud was spilled from the dam, burying bodies, equipment, structural buildings, buses, and cars along a length of 8.5 km up to the Paraopeba River. Additionally, the contaminated mud traveled more than 300 km along the bed of the Paraopeba River toward the São Francisco River. This work shows the results of a geophysical investigation using the GPR method 17 days after the event. To carry out the geophysical survey, an excavator was used for soil compaction. The data acquisition was performed on the tracks left by the excavator chain using SIR-4000 equipment and antennas of 200 and 270 MHz (GSSI). The GPR studies aimed to map bodies, structural buildings, and equipment buried in the mud. The location of the profiles followed preferably the edge of the slope due to the higher probability of finding buried bodies and objects. The GPR results allowed the detection of subsoil structures, such as concentrations of iron ore and accumulations of sand from the dam filter. The GPR was effective because the iron ore sludge in the mixing process became porous and the pores were filled with air, which provided penetration and reflection of the GPR electromagnetic waves up to a depth of 3.5 m. The results were surprising. Although no bodies or underground equipment were found, the results of this research served to eliminate the studied areas from future excavations, thus redirecting the rescue teams and optimizing the search process. These important results can serve as an additional motivation for the use of GPR in future humanitarian work in areas of tragedies.
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Dudko, А. А., Yu A. Vasileva i A. V. Veretennikov. "Results of Archaeological Exploration in the Development Zone of the Karachiyaksky Coal Deposit in Novokuznetsk District of Kemerovo Region – Kuzbass in 2021". Problems of Archaeology, Ethnography, Anthropology of Siberia and Neighboring Territories 27 (2021): 951–57. http://dx.doi.org/10.17746/2658-6193.2021.27.0951-0957.
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In June 2021, the Kuzbass team of the Department of Rescue Archaeological Work of the IAE SB RAS, together with employees of the Laboratory of Archeology of the Federal Research Center of Coal and Coal Chemistry of the SB RAS, carried out archaeological exploration as a part of the state historical and cultural expertise of the land plot intended for inclusion into development area of the Karachiyak coal deposit (The Korchakolsky and Korchakolsky Glubokyi sections) of the Kuznetskinveststroi Company in Novokuznetsk District of Kemerovo Region - Kuzbass. Presently, over thirty sites of archaeological heritage belonging to the Final Upper Paleolithic - Early Holocene are known in the Kondoma River basin. The land plot which was assigned for coal mining is located on the left bank of the KondomaRiver Valley around the village of Taylep; on the northern side it is bounded by the Taylep River and is closely adjacent to the Korchakol coal mine on the west. As a result of the works, 285 pits were made over a total area of546 sq. m, and five objects of archaeological heritage, preliminarily dated to the Final Upper Paleolithic - Early Holocene, were discovered. Thirty artifacts were found in archaeological pits, including cores, burins, scrapers, blade, spalls, flakes, and fragments. The raw materials of lithic industries at the Taylep 4-8 sites were pebbles, which widely appear in channel alluvium of the Kondoma River. According to its technical and typological features, the complex of lithic industry from the Taylep 4-8 sites forms a single cluster with the evidence from the Taylep 1 and 2 sites (lower cultural horizon) which were studied during the rescue archaeological excavations in 2020.
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Shenoy, Meetha V., i K. R. Anupama. "DTTA - Distributed, Time-division Multiple Access based Task Allocation Framework for Swarm Robots". Defence Science Journal 67, nr 3 (25.04.2017): 316. http://dx.doi.org/10.14429/dsj.67.10955.
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Swarm robotic systems, unlike traditional multi-robotic systems, deploy number of cost effective robots which can co-operate, aggregate to form patterns/formations and accomplish missions beyond the capabilities of individual robot. In the event of fire, mine collapse or disasters like earthquake, swarm of robots can enter the area, conduct rescue operations, collect images and convey locations of interest to the rescue team and enable them to plan their approach in advance. Task allocation among members of the swarm is a critical and challenging problem to be addressed. DTTA- a distributed, Time-division multiple access (TDMA) based task allocation framework is proposed for swarm of robots which can be utilised to solve any of the 8 different types of task allocation problem identified by Gerkey and Mataric´. DTTA is reactive and supports task migration via extended task assignments to complete the mission in case of failure of the assigned robot to complete the task. DTTA can be utilised for any kind of robot in land or for co-operative systems comprising of land robots and air-borne drones. Dependencies with other layers of the protocol stack were identified and a quantitative analysis of communication and computational complexity is provided. To our knowledge this is the first work to be reported on task allocation for clustered scalable networks suitable for handling all 8 types of multi-robot task allocation problem. Effectiveness and feasibility of deploying DTTA in real world scenarios is demonstrated by testing the framework for two diverse application scenarios.
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Li, Mei, Zhenming Sun, Zhan Jiang, Zheng Tan i Jinchuan Chen. "A Virtual Reality Platform for Safety Training in Coal Mines with AI and Cloud Computing". Discrete Dynamics in Nature and Society 2020 (16.10.2020): 1–7. http://dx.doi.org/10.1155/2020/6243085.
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Coal mining, regarded as a high-risk industry, has a strong demand for virtual reality (VR) to fulfill safety and emergency rescue training. In the past ten years, VR technology has significantly improved miner training on both the hardware and software side. However, it still has some drawbacks, such as expensive and unsuitable hardware, lack of satisfactory user experience, without direct browser access, and lack of humanized and intelligent design. To solve these problems, a cloud-based VR system is designed for the training of coal miners in this paper. The system, with browser/client architecture, includes eight modules demonstrating the full procedure of an underground coal mine. The online cloud-rendered video streaming is adopted to provide enough computing and rendering power and hence a better browser-based user experience. Furthermore, game artificial intelligence (AI) is also introduced into the system to increase the emotional exchange between the system and users. Unlike traditional VR training software, this system designs two virtual miners to enhance the experience of trainees. The first virtual miner is a task-oriented non-player-character (NPC) which conveys general knowledge about the mine and guides the users in visiting the underground work sites. The second virtual miner is a disaster-oriented character which prepares the users for typical disasters. The system has been successfully implemented in a laboratory environment, and its performance has been validated. Yet, further practices are needed to stimulate more innovative applications of VR-based miner training and disaster drilling.
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Rudenko, D., i A. Dominik. "INFLUENCE OF HEAT FLOW ON MULTI-FUNCTIONAL ROBOTIC MODULE DURING EXTINGUISHING FIRES IN MINES". Fire Safety, nr 33 (31.12.2018): 79–87. http://dx.doi.org/10.32447/20786662.33.2018.11.
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Conclusion.Coal is used as a technological raw material in the ferrous metallurgy and chemical industry for the production of mineral fertilizers and plastics, and coal is used as energy raw material for the production of electricity at thermal power plants, for heating residential and public buildings. The unsatisfactory state of the coal industry is due to interaction over a fairly long period of a number of factors, which by their nature have both objective and subjective character.
Purpose.In order to enter the market economy, the branch needs restructuring, the main objectives of which are the formation of competitive coal enterprises, the consistent reduction of state support to the enterprises of the industry, the use of less energy consuming extractive equipment, the improvement of safety at work in mines, the provision of trouble-free work, as well as social security of industry workers.
Methods. Empirical and theoretical methods.
Results. In the event of a fire in the mining area of the mine and subsequent possible destruction of the elements of the bearing structures of the mining shaft, as already noted earlier, in many cases it is necessary to extinguish and rescue. The presence of combustion products makes it difficult to carry out these measures. Combustion products are characterized by a high temperature (over 1000 °C), which leads to the failure of the electronic (control system) and electrical equipment (rechargeable batteries, electric motors) of the robotic module.
The heat flux studied also negatively affects the work of the robotic module. According to the technical instructions, rechargeable batteries can only operate at temperatures below 72 ºС. To protect the batteries from the heat flow, they are placed under the protective cover. However, the protective cover over time heats up and begins to heat the internal space of the robotic module, which increases the temperature of the battery. In order to provide the normal working conditions, it is necessary to install an additional insulating layer in addition to the metal cover of the multifunctional module, and from the outside it should be washed with a water solution.
Introduction. Based on the calculations of the proposed conditions of torch combustion and experimental studies, it has been established that the time of continuous work of the robotic module is 50 minutes, but when extinguishing in the places of mine workings of the mine, the maneuverability is limited and therefore this time increases. On the other hand, the heat flow should not heat the module within the specified time to the critical temperature achieved by the system of cooling the surface.
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Buratowski, Tomasz, Jerzy Garus, Mariusz Giergiel i Andrii Kudriashov. "Real-Time 3D Mapping in Isolated Industrial Terrain with Use of Mobile Robotic Vehicle". Electronics 11, nr 13 (3.07.2022): 2086. http://dx.doi.org/10.3390/electronics11132086.
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Simultaneous localization and mapping (SLAM) is a dual process responsible for the ability of a robotic vehicle to build a map of its surroundings and estimate its position on that map. This paper presents the novel concept of creating a 3D map based on the adaptive Monte-Carlo location (AMCL) and the extended Kalman filter (EKF). This approach is intended for inspection or rescue operations in a closed or isolated area where there is a risk to humans. The proposed solution uses particle filters together with data from on-board sensors to estimate the local position of the robot. Its global position is determined through the Rao–Blackwellized technique. The developed system was implemented on a wheeled mobile robot equipped with a sensing system consisting of a laser scanner (LIDAR) and an inertial measurement unit (IMU), and was tested in the real conditions of an underground mine. One of the contributions of this work is to propose a low-complexity and low-cost solution to real-time 3D-map creation. The conducted experimental trials confirmed that the performance of the three-dimensional mapping was characterized by high accuracy and usefulness for recognition and inspection tasks in an unknown industrial environment.
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Swidinsky, Andrei, i Misac Nabighian. "Transient electromagnetic fields of a buried horizontal magnetic dipole". GEOPHYSICS 81, nr 6 (1.11.2016): E481—E491. http://dx.doi.org/10.1190/geo2016-0136.1.
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Electromagnetic surveys using a vertical transmitter loop are common in land, marine, and airborne geophysical exploration. Most of these horizontal magnetic dipole (HMD) systems operate in the frequency domain, measuring the time derivative of the induced magnetic fields, and therefore a majority of studies have focused on this subset of field measurements. We examine the time-domain electromagnetic response of a HMD including the electric fields and corresponding smoke rings produced in a conductive half-space. Cases of a dipole at the surface and buried within the earth are considered. Results indicate that when the current in the transmitter is rapidly switched off, a single smoke ring is produced within the plane of the vertical transmitter loop, which is then distorted by the air-earth interface. In this situation, the circular smoke ring, which would normally diffuse symmetrically away from the source in a whole space, is approximately transformed into an ellipse, with a vertical major axis at an early time and a horizontal major axis at a late time. As measured from the location of the transmitter, the depth of investigation and lateral footprint of such a system increases with burial depth. It is also observed that the electric field measured in the direction of the magnetic dipole only contains a secondary response related to the charge accumulation on any horizontal conductivity boundaries because the primary field is always absent. This field component can be expressed analytically in terms of a static and time-varying field, the latter term adding spatial complexity to the total horizontal electric field at the earth surface at early times. Applications of this theoretical study include the design of time-domain induction-logging tools, crossborehole electromagnetic surveys, underground mine expansion work, mine rescue procedures, and novel marine electromagnetic experiments.
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Tutak, Magdalena, i Tatiana Gvozdkova. "Model-based tests on the time of crew evacuation from the danger area in an excavated underground mine heading". E3S Web of Conferences 174 (2020): 01053. http://dx.doi.org/10.1051/e3sconf/202017401053.
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When ventilation hazards become active in an underground mine heading, it is very often necessary to evacuate the crew from the danger area. This evacuation is carried out along emergency escape (evacuation) routes to a heading which is not affected by a given incident. Such a heading must provide access to fresh air and guarantee that there is no smoke. In this context, an important role is played by the time in which the crew leaves the danger area and gets into the safety zone. The time needed by the crew to cover the length of an escape route depends on a number of factors. In hard coal mines, the time necessary to evacuate the crew is most commonly determined on the basis of analytical methods developed in the second half of the 20th century. In recent years, however, the development of numerical methods has made it possible to determine these times using model-based tests supported by numerical simulations. The article presents the results of such tests with regard to the evacuation of a crew from an excavated dog heading. The objective of the tests was to analyse how the movement speed of the miners being evacuated from the danger area affects the time of their evacuation. The analysis was carried out for four different movement speeds of a crew and for 26 miners working in the heading under analysis. Their distribution in the heading reflected the actual location of their work stations. The results obtained made it possible to determine the times and intensity of their evacuation, and they should also serve as a valuable source of information for the emergency rescue teams in underground mines.
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Fernandes, Alessandra F., Ana C. Maia, Juan F. S. Monteiro, João N. Condé i Mauro Martins. "Overview of the translocation of rupestrian ferruginous fields of Capão Xavier mine to the Serra do Rola Moça State Park, Minas Gerais – Brazil". Web Ecology 16, nr 1 (28.04.2016): 93–96. http://dx.doi.org/10.5194/we-16-93-2016.
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Abstract. The identification of priority areas for the conservation of Brazilian biodiversity and the application of prompt practical measures are essential for an effective environmental management. The Serra do Rola Moça State Park, located in the Iron Quadrangle, on the southern end of the Espinhaço Range, in Minas Gerais, Brazil, is a region that is home to the rupestrian ferruginous fields or canga vegetation, a still poorly studied vegetation, rich in endemic, rare, and endangered species. The aim of this work is to contribute to the understanding of the rupestrian ferruginous fields, providing a floristic analysis, a quantification of species richness, and survival (vegetative growth in laboratory conditions, the production of nursery saplings and the management of the areas) of translocated species from the Capão Xavier mine pit to the park. The species presented belong mainly to the Asteraceae, Rubiaceae, Myrtaceae, Velloziaceae, Bromeliaceae, Orchidaceae, and Solanaceae families. Nowadays, the surrounding area of the administrative headquarters of the park shelters around 10 000 individuals and about 15 000 in other areas of the park. In the rescue and transposition of saplings, there was a loss of less than 31.29 % of the individuals directly introduced to the planting area, while only 10 % of the saplings grown in the nursery were lost. The knowledge acquired about the viability of the studied species, their spread, and conservation indicates the possibility of nursery breeding of some of the native species and their use in the recovery of areas in mining regions.
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Szkudlarek, Joanna, Grzegorz Owczarek, Marcin Jachowicz, Bartłomiej Zagrodny i Jędrzej Sencerek. "Study of The Impact of Users’ Features on Dimensional Allowances Resulting from the Use of Personal Protective Equipment". International Journal of Environmental Research and Public Health 20, nr 4 (15.02.2023): 3380. http://dx.doi.org/10.3390/ijerph20043380.
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Up-to-date anthropometric data on the human population are needed for designing safe and ergonomically efficient workplaces. An important determinant of safety and ergonomic comfort at work is knowledge of the value of dimensional allowances (DAs) when using personal protective equipment (PPE) as the dimensions and space occupied by workers increase. This is particularly important in environments characterized by spatial constraints. However, it is not well known to what extent the aforementioned DAs are affected by the users’ features. The anthropometric dimensions of 200 people (151 males and 49 females) were obtained from 3D scans, and these became the basis for calculating DAs when using PPE kits normally worn by rescue and technical workers. DAs were determined for the entire body shape of a person wearing three types of PPE kits designed for firefighters, mine rescuers, and welders. In the study, maximum and mean values of height, width, and circumference DAs were obtained. In addition, percentage dimensional increments (DIs) were calculated. A three-dimensional analysis of the human body with and without PPE, involving a 3D scanning methodology, was applied to address the research question. Test results clearly indicate that the values of DAs do not depend on the anthropometric features of users, such as sex, age, and body height percentile—they remain constant for a given type of PPE. The presented data are useful for designing PPE products as well as work tools and infrastructure, including machinery, devices, workstations, means of transport, interiors, and building equipment. The results of the presented study indicate that dimensional allowances play a significant role in interactions between persons wearing PPE and their work environments. The obtained results (DAs and percentage DIs) are included in a new anthropometric atlas of human measures developed by the CIOP-PIB in 2023.
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Korotenko, Olga Yu, Egor S. Filimonov i Ilya D. Martynov. "Risk factors for the development of heart failure with a preserved left ventricular ejection fraction in workers of the main professions of the coal industry". Russian Journal of Occupational Health and Industrial Ecology 63, nr 9 (5.10.2023): 611–16. http://dx.doi.org/10.31089/1026-9428-2023-63-9-611-616.
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Introduction. In the coal industry, 78.7% of employees work in places with harmful working conditions, which play a leading role in the development of not only professional, but also industrial diseases, the leading of which are diseases of the cardiovascular system. The identification of preclinical systolic dysfunction of the left ventricle and the assessment of the role of traditional and professionally determined risk factors for the development of systolic dysfunction of the left ventricle in workers of the main professions of the coal industry is of scientific interest.
The study aims to assess the risk factors for the development of heart failure with a preserved left ventricular ejection fraction in workers of the main professions of the coal industry.
Materials and methods. The study included 101 employees of the main professions of the coal industry and 80 employees of the paramilitary mine rescue unit. The subjects had no somatic pathology, which could lead to structural and functional changes of the heart. The scientists performed echocardiographic and ultrasound examinations of the main arteries according to standard methods and assessed the generally accepted risk factors for the development of cardiovascular pathology (smoking, abdominal obesity, body mass index, total cholesterol, triglycerides, high and low density lipoprotein cholesterol, glycated hemoglobin).
Results. The researchers revealed systolic dysfunction of the left ventricle significantly in miners more often in the form of a decrease in longitudinal deformation (27.7% of miners versus 7.6% of paramilitary rescuers, p=0.0005), while its average value is also significantly lower in miners and has a value below the established norm (–17.2±0.044 and –19.3±0.03, p=0.0005). The authors found no significant differences in the frequency of commonly accepted risk factors: abdominal obesity, smoking, atherosclerosis of the main arteries, dyslipidemia and the level of glycated hemoglobin in miners and workers of the mine rescue unit, as well as in miners, depending on the index of longitudinal deformation of the left ventricle.
Conclusion. The obtained results indicate the need for a prenosological diagnosis of systolic dysfunction of the left ventricle, studying it in dynamics and simultaneously expanding the search for risk factors, which will allow early prevention of this complication in workers in harmful working conditions.
Ethics. The study was conducted in compliance with the standards of the Bioethical Committee of the Research Institute of Complex Problems of Hygiene and Occupational Diseases, established in accordance with the Helsinki Declaration of the World Association "Ethical Principles of Scientific Medical Research with Human Participation" as amended in 2013 and the "Rules of Good Clinical Practice" approved by Order of the Ministry of Health of the Russian Federation dated 01.04.2016 No. 200n. The subjects signed an informed consent to participate in the study.
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Shaik, Shakeera, Pavan Ganesh S. S. Pokkuluri i Hrishikesh Venkataraman. "GELS: Generalized Energy-Based Leader Selection in Bio-Inspired Leader‐Follower AUV Network". Marine Technology Society Journal 56, nr 2 (27.04.2022): 35–46. http://dx.doi.org/10.4031/mtsj.56.2.2.
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Abstract An autonomous underwater vehicle (AUV) is a self-propelled, untethered underwater vehicle with minimal or no human supervision. However, the capability of a single AUV to cover large areas underwater is very limited. In this regard, a swarm of AUVs has gained significant attention in the recent years for underwater applications such as ocean exploration, mine-sweeping, surveillance, rescue missions, seabed mapping, environmental monitoring, etc. Notably, the swarm-based network can be further classified into two types, based on the architecture: cooperative multi-AUV network and leader‐follower multi-AUV network. Of these, the leader‐follower multi-AUV network with a Fixed Leader is preferable due to its simple architecture and less operational complexity. However, the inherent energy limitations of the leader in the leader‐follower model become the bottleneck for an efficient mechanism. Hence, there is a need to design a better mechanism for a multi-AUV network. In this paper, a Generalized Energy-based Leader Selection (GELS) algorithm is proposed for a multi-AUV network to increase the AUV network's transmission range and duration. Significantly, GELS can be superimposed and integrated with the existing algorithms. This proposed work integrates GELS with two bio-inspired mechanisms: Ant Colony Optimization and Particle Swarm Optimization. The dynamic leader selection using GELS results more in the travel distance and duration than the Fixed Leader network. This is because, in GELS, based on residual energy, the followers could also be allowed to lead the network; whereas, in fixed leader the followers cannot lead the network.
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Kudiievskyi, Ya V., i O. I. Soloviov. "The dynamics of the state of compliance with professional requirements for the fulfillment of the work of increased danger of the workers of the State militarized mine rescue service in the coal industry of Ukraine". Ukrainian Journal of Occupational Health 2021, nr 3 (23.09.2021): 182–88. http://dx.doi.org/10.33573/ujoh2021.03.182.
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