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Relevant bibliographies by topics / Coal mines and mining

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Academic literature on the topic 'Coal mines and mining'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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Journal articles on the topic "Coal mines and mining"

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Hendryx, Michael, Mohammad Saidul Islam, Guang-Hui Dong, and Gunther Paul. "Air Pollution Emissions 2008–2018 from Australian Coal Mining: Implications for Public and Occupational Health." International Journal of Environmental Research and Public Health 17, no. 5 (February 29, 2020): 1570. http://dx.doi.org/10.3390/ijerph17051570.

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Occupational exposure limits for respirable coal dust are based on exposure during working hours, but coal miners may experience additional community-based exposures during nonworking hours. We analyzed Australia National Pollutant Inventory (NPI) data for the years 2008–2018 to estimate air pollutants (metals, nitrogen oxides, particulate matter ≤ 10 micrometers (PM10) and ≤2.5 micrometers (PM2.5)) originating from coal mines. PM10 levels from community-based air monitors in Queensland and New South Wales were also compared between mining and nonmining communities. Results indicated that tons of coal mined increased over the study period, and that levels of particulate matter, metals, and nitrogen oxides increased significantly over time as well. Coal mines accounted for 42.1% of national PM10 air emissions from NPI sites. PM2.5 from coal mines accounted for 19.5% of the national total, metals for 12.1%, and nitrogen oxides for 10.1%. Coal mining occurred in 57 different post codes; the 20 coal-mining post codes with the highest PM10 emissions were home to 160,037 people. Emissions of all studied pollutants were significantly higher from coal mining sites than from other types of NPI sites. Results from community-based air monitoring stations indicated significantly higher population PM10 exposure in coal mining communities than in nonmining communities. The health of the public at large is impacted by coal mining, but to the extent that miners also live near coal mining operations, their total exposure is underestimated by consideration of exposure only during working hours.

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Liu, X., L. Li, and Y. Yang. "Development status of coal mining in China." Journal of the Southern African Institute of Mining and Metallurgy 123, no. 1 (February 23, 2023): 19–27. http://dx.doi.org/10.17159/2411-9717/1506/2023.

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Coal mining in China is facing the transition from output to quality. Based on the total mining capacity and average production, the current situation of coal mining at mine, city, and province levels is analysed, and data in support for the layout of sustainable mining development and the optimization of output provided. The results show that 87% of China's coal is mined by underground methods, with an average production capacity of 0.93 Mt/a per mine. Open pit mining accounts for 13%, with an average mine production capacity of 5.73 Mt/a. The average mining capacity of coal mines in China is 1.05 Mt/a, with 1181 coal mines with an average capacity less than 0.3 Mt/a, accounting for 35% of the total coal mines but contributing only 4.51% to output. They are distributed in about 48 cities in six provinces, seriously restricting the transition to green coal mining. The coal industry should speed up the closure of small coal mines in key provinces and cities, eliminate outdated production capacity in the central region, increase the speed and proportion of coal resources moving westward, and promote high-quality development of coal mining.

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Molnár, József, Ákos Debreczeni, and Richárd Tompa. "Opportunities of re-establishing underground mining in the borsod coal basin in north-eastern Hungary." New Trends in Production Engineering 2, no. 1 (October 1, 2019): 532–40. http://dx.doi.org/10.2478/ntpe-2019-0057.

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Abstract Numerous underground coal mines were in operation in the Borsod coal basin in northeastern part of Hungary until the beginning of this century. The main area of utilization of the mined out coal beside power and heat generation was supplying households with fuel mostly for heating. In the beginning of the 1990ies the power plants in question were shut down for economic, environmental and technical reasons. Consequently all the mines were closed no later than 2004 and thousands of miners lost their jobs. A new perspective of coal mining can be enabled by other ways of utilization of coal, e.g. coal chemistry, etc. Safe and modern equipment and technology enabling high output, clean coal, furthermore high rate of yield are targeted. Opportunity of sustainable underground coal mining in the north-eastern part of Hungary is discussed in the paper. Analysis of the properties of coal deposits using three-dimensional (3D) modelling are used for considering opportunities of new mining operations. Models are being developed.

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Starodubov, A. N., V. I. Klishin, A. N. Kadochigova, and A. V. Kaplun. "Research of coal mining technology in complex ground conditions using mathematical modeling." Mining Industry Journal (Gornay Promishlennost), no. 5S/2023 (December 20, 2023): 47–52. http://dx.doi.org/10.30686/1609-9192-2023-5s-47-52.

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Future development of mining operations along with creation of new mines, will be supported by modernization and reconstruction of existing enterprises. Creation of mechanized coal face systems that ensure complete extraction of coal reserves with the supply of occupational safety is prospective. One of the most effective technologies for the development of high coals is their mining from wall to wall with drawing coal from the roof layer into the under-cutting layer. Research of a new design of mechanized support was carried out using the developed simulation model based on the discrete elements method in the Rocky DEM environment. The amount of coal losses remaining in the mined-out space is determined. The opportunity of using the developed model is demonstrated for analyzing the flows of the coal-bearing mass in the implementation of the technology of coal mining from high flat-lying coal seams to identify new patterns and ways to improve the efficiency of the technology before its implementation in coal mines.

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Onifade, M., B. Genc, K. O. Said, M. Fourie, and P. O. Akinseye. "Overview of mine rescue approaches for underground coal fires: A South African perspective." Journal of the Southern African Institute of Mining and Metallurgy 122, no. 5 (June 10, 2022): 1–14. http://dx.doi.org/10.17159/2411-9717/1738/2022.

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Coal is mined by both surface and underground methods and its extraction is normally characterized by numerous hazards that can lead to catastrophic accidents, which result in devastating effects such as injuries or fatalities, damage to mining assets, and destruction of mineral resources. These hazards exist due to the ability of coal to support combustion and its association with toxic, flammable, and explosive gases. Underground coal mining entails higher safety risks than opencast coal mining, chiefly because of issues relating to mine ventilation and mine collapse. Furthermore, coal mine collapses mostly occur due to crumbling of mining supports, especially in room and pillar mining systems. To avoid such adverse occurrences, safety management systems need to be in place. This study reviews the various technological safety systems and principles that are used for safe-rescue and self-escape of miners in underground coal fires, particularly in South Africa, using data obtained from Mines Rescue Services in Carltonville, South Africa. The outcome of the review shows that practising safety culture has been given priority across many South African underground coal mines through setting up safety management systems and encouraging workers to stay committed to safety principles.

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Karatela, Shamshad, Samantha Caruana, and Gunther Paul. "Prevalence of respiratory disease in the population of Queensland communities in proximity to coal mines and coal mining activities." International Journal Of Community Medicine And Public Health 9, no. 7 (June 28, 2022): 3014. http://dx.doi.org/10.18203/2394-6040.ijcmph20221776.

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Air quality related to respiratory illness is examined in many settings, including populations that work or reside close to sources of pollution. Industry produced pollution from mining and metal manufacturing, natural environmental pollution as in the case of bushfires and large-scale dust storms are examples. We reviewed any available literature and data concerning the Queensland coal industry and its effect on respiratory health of miners, mining related workers and communities in proximity to coal mines. We searched various databases using keywords related to coal and respiratory diseases, using the five step criteria defined by Denyer and Tranfield. In the Queensland coal mining industry, the negative effect of mining on workers’ respiratory health has been known for many years and has received increased attention in the last five years both nationally and internationally due to the resurgence in Coal Mine Dust Lung Diseases and specifically Coal Worker’s Pneumoconiosis (CWP). A Queensland parliamentary review has prompted regulatory amendments for the permitted (occupational) exposure level (PEL; OEL) to coal dust and silica; amendments have also been enacted for better occupational respiratory health surveillance of Queensland coal miners, both surface and underground. Considering Queensland has a high proportion of Australian coal mines, the literature available on respiratory health in Queensland coal mines and surrounding communities is minimal. There is very limited research into, and possible underreporting of CMDLD amongst the coal mining workers in Queensland. Further studies are required to better understand air pollution and health effects in coal miners in Queensland.

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Godzhaeva, Natalia, Timur Logunov, Marina Lokteva, and Pavel Strelnikov. "Integrating ICT into Teaching Foreign Languages for Future Mining Engineers as a Factor of Mining Industry Innovative Development." E3S Web of Conferences 105 (2019): 04037. http://dx.doi.org/10.1051/e3sconf/201910504037.

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The Kemerovo Region is the leading coal cluster of Russia and Europe, where about 60% of all domestic coal is mined, 42 mines and 51 open-pit mines are operating, as well as 54 coal processing plants and installations. At the beginning of 2019, more than 90 thousand people worked in the coal industry of Kuzbass. The task of increasing the labor productivity of coal enterprises is largely determined by personnel potential, which is the main productive force in the post-industrial era. Enterprise staff is the creator of all the material and intellectual values of the coal industry, without exception. Today, the maximum use of all available internal production resources depends on the quality of university training of miners, the formation of their professional and communicative competences. This study focuses on the use of new technologies in learning foreign language by future mining engineers. It discusses a variety of attitudes and incentives which support the readiness of students in this field to increase their learning skills through using ICT. In this paper, the authors review practices and experience of using the technology in classroom summarized in expert opinions of foreign language teachers working with undergraduate students – future mining engineers.

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Zaburdayev, V. S., and S. N. Podobrazhin. "Methane Injury-Risk at the Russian Mines." Occupational Safety in Industry, no. 9 (September 2021): 69–74. http://dx.doi.org/10.24000/0409-2961-2021-9-69-74.

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Conditions are given concerning the development of methane-bearing coal seams in Russia, the chronology of injuries from explosions and outbreaks of methane-air mixtures at the Russian mines for a quarter of a century of developing coal seams at the nine deposits. The emergency was studied in 174 mine incidents, which occurred mainly at the mines of Kuzbass, Vorkuta coal deposit, Eastern Donbass, Chelyabinsk basin, Primorye and Sakhalin. Emergency objects - excavation areas, preparation faces and mined-out areas of the mines. The sources of ignition of methane-air mixture are drilling and blasting works in the faces, malfunctioning of electrical equipment, frictional sparking, endogenous fires, and smoking in the mines. The most injury-risk for methane are steep and steeply inclined mines. The need in the scientific substantiation of the decisions taken for prevention or reduction of the methane injury-risk at the mines is noted in the article. An important role is assigned to the choice of ways to achieve this goal considering the geological and mining conditions of the development of gas-bearing coal seams. As an example, the conditions, methods, and parameters of mining operations at the excavation areas of four mines are given, where occurred the catastrophic explosions of methane-air and methane-dust-air mixtures. The reasons are gross violations of safety rules during mining operations, incompetence of the mine engineering personnel, design, and control organizations in matters of safety during the underground work at the gas-hazardous mines with an extensive network of workings. This resulted in the death of miners and mine rescuers, the destruction of mine workings, equipment and devices, underground fires. Recommendations are given for reducing the level of methane injury-risk at the methane-rich mines.

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Yang, Li, Xue Wang, Junqi Zhu, Liyan Sun, and Zhiyuan Qin. "Comprehensive Evaluation of Deep Coal Miners’ Unsafe Behavior Based on HFACS-CM-SEM-SD." International Journal of Environmental Research and Public Health 19, no. 17 (August 29, 2022): 10762. http://dx.doi.org/10.3390/ijerph191710762.

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The unsafe behavior of miners seriously affects the safety of deep mining. A comprehensive evaluation of miners’ unsafe behavior in deep coal mines can prevent coal mine accidents. This study combines HFACS-CM, SEM, and SD models to evaluate miners’ unsafe behaviors in deep coal mining. First, the HFACS-CM model identifies the risk factors affecting miners’ unsafe behavior in deep coal mines. Second, SEM was used to analyze the interaction between risk factors and miners’ unsafe behavior. Finally, the SD model was used to simulate the sensitivity of each risk factor to miners’ unsafe behavior to explore the best prevention and control strategies for unsafe behavior. The results showed that (1) environmental factors, organizational influence, unsafe supervision, and unsafe state of miners are the four main risk factors affecting the unsafe behavior of miners in deep coal mines. Among them, the unsafe state of miners is the most critical risk factor. (2) Environmental factors, organizational influence, unsafe supervision, and the unsafe state of miners have both direct and indirect impacts on unsafe behaviors, and their immediate effects are far more significant than their indirect influence. (3) Environmental factors, organizational influence, and unsafe supervision positively impact miners’ unsafe behavior through the mediating effect of miners’ unsafe states. (4) Mental state, physiological state, business abilities, resource management, and organizational climate were the top five risk factors affecting miners’ unsafe behaviors. Taking measures to improve the adverse environmental factors, strengthening the organization’s supervision and management, and improving the unsafe state of miners can effectively reduce the risk of miners’ unsafe behavior in deep coal mines. This study provides a new idea and method for preventing and controlling the unsafe behavior of miners in deep coal mines.

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Pirieva, Natalya, and Inna Ermakova. "Coal Pillars Safe Mining." E3S Web of Conferences 41 (2018): 01026. http://dx.doi.org/10.1051/e3sconf/20184101026.

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Safety pillars are the necessary objects for underground mining of coal seams. The having been mines; safety pillars, which include the development workings, lose their purpose. The coal reserves in these pillars are significant and can be mined. However, the pillars have fracture zones in the edges. The size of the fracture zones in the marginal parts of the pillars should be taken into account when choosing a mining system and its parameters. Coal pillar stress-strain analysis was carried out by the finite element method. The developed technique for coal pillar stress-strain analysis takes into account the post-critical strain of the coal seam edge. The reliability of the technique was verified by the experimental method. The calculated and experimental values differ insignificantly. The geomechanical condition of the nine safety pillars in A.D. Ruban mine of OJSC “SUEK-Kuzbass” was studied. The enterprise mines three low dip seams at a depth of up to 290 m. The amount of losses in fracture zones is defined for the pillars, which include slopes and entries. Fracture zones in the pillars were sized taking into account the actual structure of the seam roofs: the depth of bedding, their thickness and strength characteristics. The economic effect of mining of the safety pillars is pre-computed.

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Dissertations / Theses on the topic "Coal mines and mining"

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Forrest, W. "The development of new coal mines." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378766.

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McCoy, Kurt J. "Estimation of vertical infiltration into deep Pittsburgh coal mines of WV-PA a fluid mass balance approach /." Morgantown, W. Va. : [West Virginia University Libraries], 2002. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=2745.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains x, 150 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 87-90).

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Noppé, Mark Adrian. "Geological controls for coal exploration and mining." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005566.

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The identification and interpretation of geological features is essential for the planning and ultimate success of any mining venture. Examples of geological features significant for mining are presented, and their identification during exploration discussed. In particular, the importance of coal qualities, seam thickness and seam elevation are emphasised in relation to longwall mining. Geostatistical analysis provides a powerful tool for improving the prediction and decision-making capabilities of both exploration and mine geologists. The availability of geostatistics, and the benefits resulting from its application, are demonstrated using actual data for calorific value, seam thickness and seam elevation. Contamination of run-of-mine coal is a common problem on highly-mechanised collieries. The problem generally arises from over-cutting of the designated mining horizon. A practical system for monitoring and controlling contamination on a mechanised bord-and-pillar and longwall colliery is presented. The results and benefits of applying such a system are cited for an actual longwall colliery. Numerical geological predictions are not always reported in terms of the reliability of such estimates. Many of these values can be reported in terms of confidence limits, particularly for routine grade control purposes. The methods and benefits of such reporting are described and illustrated by way of examples for calorific value and contamination levels.

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Harvey, Harvey Blevins Madison D. Soyini. "Mines-bodies a performance ethnography of Appalachian coal mining /." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,187.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.
Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Communication Studies (Performance Studies)." Discipline: Communication Studies; Department/School: Communication Studies.

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Meyer, Petrus C. "Feasibility of thin seam coal mining at Dorstfontein Coal Mine." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-09072005-113231/.

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Brendliner, Robert Lee. "Toxicity analysis of coal mining industry NPDES discharges in Southwest Virginia /." This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01122010-020036/.

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Mitchell, Mickey D. "Analysis of underground coal mine refuge shelters." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5770.

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Thesis (M.S.)--West Virginia University, 2008.
Title from document title page. Document formatted into pages; contains viii, 70 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 69-70).

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Sellami, Moncef. "Recoverable reserve estimation in multiple seam mines." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09192009-040606/.

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Chelin, Monique Josette. "Water in the coal mining industry : an assessment of water management issues facing the coal mining industry of the Witbank and Middelburg Dam catchments." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-05292006-103231/.

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Meyer, Petrus Cornelius. "Feasibility of thin seam coal mining at Dorstfontein Coal Mine." Diss., University of Pretoria, 2003. http://hdl.handle.net/2263/27806.

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Books on the topic "Coal mines and mining"

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Dyer, Peter. Coal mines of Puponga. Picton, N.Z: October Enterprises t/a River Press, 2003.

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Illinois. Dept. of Commerce and Economic Opportunity. Office of Coal Development. Coal mining in Illinois 2010. Springfield, Ill.]: Dept. of Commerce and Economic Opportunity, 2010.

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H, Martin C., and Australasian Institute of Mining and Metallurgy., eds. Australasian coal mining practice. 2nd ed. Parkville, Vic., Australia: Australasian Institute of Mining and Metallurgy, 1993.

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Close, Debby O. Coal mining days in the Weir-Pittsburg coal field. Pittsburg, Kansas: Miners Memorial Publishing Co., 2009.

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DeMarchi, Jane. Historical mining disasters. [Washington, D.C: U.S. Dept. of Labor, Mine Safety and Health Administration, 1997.

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L, Franklin John, ed. Coal mining reference book. 5th ed. Lexington, KY: Kentucky Mining Institute, 1997.

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India. Manual of mines & mineral: Along with coal mines legislation. Allahabad: National Law Agency, 1990.

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Jackson, Lindsey J. Surface coal mines - restoration and rehabilitation. London: IEA Coal Research, 1991.

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Paździora, Józef. Design of underground hard-coal mines. Amsterdam [Netherlands]: Elsevier, 1988.

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Prasad, Meenakshi. Coal mining and urbanization. New Delhi: Rajesh Publications, 2018.

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Book chapters on the topic "Coal mines and mining"

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Tomasi, Luca. "From coal mines to text mining." In Multilingual Perspectives from Europe and Beyond on Language Policy and Practice, 110–34. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429351075-9.

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Sengupta, Mritunjoy. "The Acid Mine Drainage Problem from Coal Mines." In Environmental Impacts of Mining, 101–36. 2nd ed. Second edition. | Boca Raton, FL : CRC Press, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9781003164012-4.

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Hantz, D. "Pit slopes design in French surface coal mines." In Geotechnical Stability in Surface Mining, 107–11. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003079286-16.

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Bollinger, G. A. "Microearthquake Activity Associated with Underground Coal-Mining in Buchanan County, Virginia, U.S.A." In Seismicity in Mines, 407–13. Basel: Birkhäuser Basel, 1989. http://dx.doi.org/10.1007/978-3-0348-9270-4_8.

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Janusz, Andrzej, Marek Sikora, Łukasz Wróbel, Sebastian Stawicki, Marek Grzegorowski, Piotr Wojtas, and Dominik Ślęzak. "Mining Data from Coal Mines: IJCRS’15 Data Challenge." In Lecture Notes in Computer Science, 429–38. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25783-9_38.

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Skousen, Jeff, and Carl E. Zipper. "Coal Mining and Reclamation in Appalachia." In Appalachia's Coal-Mined Landscapes, 55–83. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57780-3_3.

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Pradhan, G. K., Om Prakash, and N. R. Thote. "Blast Free Mining in Indian Surface Coal Mines – Current Trend." In Mine Planning and Equipment Selection, 335–57. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02678-7_34.

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Choudhury, Mihir. "Sustainability of Underground Coal Mining in India Vis-a’-Vis Coal Mines Regulations, 2017." In Springer Proceedings in Earth and Environmental Sciences, 73–84. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-46966-4_6.

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Merovich, George T., Nathaniel P. Hitt, Eric R. Merriam, and Jess W. Jones. "Response of Aquatic Life to Coal Mining in Appalachia." In Appalachia's Coal-Mined Landscapes, 245–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57780-3_10.

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Hu, Zhenqi, Wu Xiao, and Yanhua Fu. "Introduction to Concurrent Mining and Reclamation for Coal Mines in China." In Mine Planning and Equipment Selection, 781–89. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02678-7_76.

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Conference papers on the topic "Coal mines and mining"

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Boltz, S., D. Chambers, S. Sbai, and P. Janson. "Developing a Velocity Model for an Underground Coal Mine Using a Compressed Load Column Seismic Source." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0284.

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ABSTRACT Induced seismicity is common in underground mining, particularly in mines that cave by design, such as longwall coal mining. Seismic monitoring is one of the few remote sensing technologies that provide an understanding of a mine's response to extraction. However, its effectiveness usually depends on understanding event locations in relation to the mine workings. A significant source of uncertainty in event locations is the velocity model: a description of the speed at which seismic energy propagates. A nondestructive, repeatable compressed load column seismic source (CLCSS) was developed for velocity model calibration in underground coal mines. This paper describes the CLCSS and its application at a longwall coal mine. Signals from the CLCSS were detected up to 950 m epicentrally (1,100 m hypocentrally) from the source. Using the ground-truthed signals from the seismic source, we estimate a velocity model for locating events from a surface geophone array. Model performance is evaluated by relocating mining-induced events with well-constrained locations. A three-layer model with P-wave velocities ranging from 3.6 km/s to 4.4 km/s and a VP/VS ratio of 2.1 performed best with location errors of approximately 100 m, which is sufficient for many applications of seismic monitoring in coal mines. INTRODUCTION Coal bursts—violent dynamic failures which cause damage to mine openings—were first documented in European coal mines well before World War I (Guan et al., 2009) and continue to threaten underground coal miners around the world. For example, approximately 280 significant bursts occurred in U.S. coal mines between 1983 and 2017, seven of which resulted in fatalities (Mark, 2018). In China, over 200 coal mines have reported bursts cumulatively resulting in over 1,000 injuries and 100 fatalities in the past 10 years (Rong et al., 2022). Poland's Upper Silesian Coal Basin has experienced over 100 significant events, some of which resulted in injuries and fatalities (Mutke et al., 2015). Several other countries have also reported coal mine bursts, including Japan, Australia, India, France, South Africa, Czechoslovakia, Canada, Germany, and Russia (Lama and Bodziony, 1998). Although bursting mechanisms are not well understood and vary considerably, studies have identified risk factors including depth of cover or rapid changes in topographic relief, thick brittle strata near the coal seam, inadequately designed pillars, multi-seam interactions, and a variety of other mining and geological factors (Mark and Guana, 2016).

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Jobes, Christopher C., and Jacob Carr. "Dynamic Modeling System to Determine Stopping Distances of Mobile Underground Coal Equipment." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86422.

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In underground coal mines, miners face the hazard of being struck or pinned by a piece of mobile mining machinery. Proximity detection systems have been developed and are used by the industry to protect miners around these machines by detecting the presence of the miners and automatically issuing warnings or disabling machine motion when a miner is in potentially dangerous proximity. These systems were originally developed for continuous mining machines, slow-moving machines that move on bulldozer-style tracks, and are now mandated by the Mine Safety and Health Administration (MSHA) to be used on continuous mining machines. These systems are now being adapted to other underground vehicles, such as shuttle cars, scoops, and battery haulers — vehicles that move on rubber tires at much higher speeds. There are concerns that the detection range of these systems may not provide for an adequate stopping distance on these faster moving machines. To address these concerns, researchers have developed a dynamic modeling system to determine the stopping distance of mobile underground coal equipment. This model can be used in conjunction with worker escapability data and/or information on interaction with other vehicles to provide insight into whether or not proximity detection systems will be adequate for the underground mining workplace. This paper details the background, development, and operation of the resulting application software, focusing on the utility of the graphical user interface to visualize the generated data. The refined data developed by this process can then be utilized by mine operators and proximity detection system manufacturers to more accurately determine the detection range needed to provide effective protection for miners working in an underground mining environment.

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Noll, James, Cory DeGennaro, Jacob Carr, Joseph DuCarme, and Gerald Homce. "Causal Factors of Collision Accidents Involving Underground Coal Mobile Equipment." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70714.

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From 2000–2015, thirty-two fatalities occurred due to collisions involving mobile equipment in underground coal mining in the United States. Studies have shown that proximity detection systems (PDS) can be a potential mitigation strategy for this type of accident. However, the effectiveness of this approach for mobile equipment has yet to be fully studied or validated. Researchers at the National Institute for Occupational Safety and Health (NIOSH) evaluated the causal factors of this type of fatality. Fatal accident reports from the Mine Safety and Health Administration (MSHA) accident report database provided details to analyze and determine causal factors and to evaluate whether a PDS may have been a preventive factor in each accident. NIOSH researchers concluded that PDSs used in underground coal mines on mobile equipment which are designed to detect a miner, provide warning to the operator and other miners, and automatically stop the machine before a miner is hit may have helped to prevent 25 of the 32 or 78% of the accidents.

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DeFreez, Richard K. "Remote DIAL Measurements of Methane in Coal Mines." In Optical Remote Sensing. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/ors.1985.thb2.

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Nearly two-thirds of all underground U.S. coal tonnage is extracted using continuous mining machines in room-and-pillar mining operations1. As a result of the Mine and Safety act of 19602 and various state laws, present practice in the room-and-pillar mine is to stop mining every twenty minutes to measure the concentration of methane gas within one foot of the working face. After the mining machine is withdrawn, temporary roof supports are installed to the working face so that a miner can approach the face and measure the methane concentration with a hand-held catalytic combustion methane detector and/or flame safety lamp3. When the measurement is completed, the temporary roof supports are removed and the mining machine begins working again. Obviously, this procedure reduces productivity and is in itself a safety hazard as temporary roof supports can well be dangerous.

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5

Strozik, Grzegorz, and Marcin Popczyk. "Filling of Underground Voids with Fy Ash – Water Slurries as a Contribution Into the Reduction of Saline Waters Discharge from Coal Mines Into the Odra River." In The 20th International Conference on Transport and Sedimentation of Solid Particles. Wydawnictwo Uniwersytetu Przyrodniczego we Wrocławiu (WUELS Publishing House)), 2023. http://dx.doi.org/10.30825/4.14-23.2023.

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Drainage and discharge of mine waters belong to main environmental issues that must be appropriately addressed by underground coal mining industry. Saline mine waters from both active and already closed mines contribute the environmental risks for rivers and their catchments. Increasing average depth of mining works and necessity of drainage of numerous closed mines results in increasing amounts of chlorides and sulphates being introduced into water environments, even then coal production of Polish mining industry is decreasing. Majority of mines waters are discharging directly to watercourses and the only significant environmental protection measure is control of the concentration of salt in main rivers. Balance of mine waters and Cl- + SO4 - ions demonstrates the weight of this issue and gives a background, on which technology of filling of underground voids has been discussed as a method, which, under several conditions, may reduce the discharge of brines and highly salinized mine waters (mineralisation above 42 g/dm3 ) by about 30%. Although technology of filling of voids with mixtures of water and finely grained solids (mostly fly ash) is well known and adopted by most of the coal mines, its potential in reduction of saline waters discharge is being wasting due to inconsequence in its use and underestimating its value in terms of saline waters management. Influence of waterʼs salinity on the physical properties of the fill, as well as benefits gained by the coal mines as result of filling of voids, show that these operations should be conducted in the possibly largest extent, limited only by availability of fly ash and volume of voids, being created as result of coal extraction.

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6

Efremenko, Vladimir, and Roman Belyaevsky. "Evaluation of Explosion Protection Means of Mine Electrical Equipment forOperation in Excavations of Coal Mines." In Taishan Academic Forum - Project on Mine Disaster Prevention and Control. Paris, France: Atlantis Press, 2014. http://dx.doi.org/10.2991/mining-14.2014.30.

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7

MOORE, PW. "NOISE MEASUREMENT TECHNIQUES AT OPENCAST COAL MINES." In Noise from Drilling, Mining and Quarrying Operations 1989. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/21742.

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8

van Duin, Stephen, Luke Meers, and Gary Gibson. "Hard Automation Trends in Australian Underground Coal Mines." In 30th International Symposium on Automation and Robotics in Construction and Mining; Held in conjunction with the 23rd World Mining Congress. International Association for Automation and Robotics in Construction (IAARC), 2013. http://dx.doi.org/10.22260/isarc2013/0016.

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9

Gibesova, Beata. "REDUCING DANGER OF COAL DUST IN COAL MINES IN CZECH REPUBLIC." In 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/ba1.v1/s03.054.

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10

Johnson, Raymond L., and M. Sedaghat. "The Implementation of Subterranean Barriers to Reduce Shallow Gas Migration and Coal Mine Methane Emissions from Open-Cut Metallurgical-Coal Mines." In Asia Pacific Unconventional Resources Symposium. SPE, 2023. http://dx.doi.org/10.2118/217310-ms.

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Abstract The implementation of low-permeability barriers was originally proposed to reduce gas influx into areas of pre-drainage prior to or after mining operations (Johnson Jr, 2014). Currently, barriers are being proposed to provide a real opportunity to dramatically reduce methane emissions from open-cut, metallurgical coal (MC) mines, essential to meet steel production targets for international urbanisation and energy transformation. Finally, barrier implementations can accelerate peak gas production and recovery in areas of undersaturated coals or coal wells subject to aquifer influx. The basis of barriers is similar to naturally occurring barriers (i.e., igneous intrusions or dikes) that have shown effectively separate areas of drained and undrained mine works (as observed in adjoining drained and undrained mines in Central Queensland). In the environmental and in civil engineering sectors, artificial impermeable barriers have been implemented in shallow reservoirs to manage flow or contain contaminant plumes in groundwater or to prevent water influx into groundworks, respectively. In the oil and gas sector, barriers have been proposed to control gas or water leakage or breakthrough in areas of storage, initial production, or secondary recovery processes, mostly involving gas or water egress into outlying reservoirs or unwanted influx into productive intervals. This paper builds on previous research and provides a working framework for the use of impermeable materials to create permeability barriers. It also builds on complementary research into more effective low permeability coal extraction technologies and technology implementation currently being deployed to improve underground mine gas drainage systems. Our paper describes the design, execution and evaluation workflows and the relative importance of variables required for a barrier implementation in two key applications. Firstly, we will report the results of ongoing planning and modelling to implement and assess a barrier application for the primary application of eliminating gas migration from unmined, in-seam sections in conjunction with open-cut MC mining operations. Similarly, barriers can be used to improve underground mine pre-drainage, improving safety, and lowering methane influx and overall emissions from down-dip coals. Next, we will demonstrate using a representative model the application of barriers to reduce aquifer influx into and gas migration from a coal seam gas (CSG) well near a subcrop with an aquifer connection. Similarly, barrier applications can improve gas production and recovery for undersaturated coal seams where conventional shielding methods to reduce water influx and improve desorption have been ineffective.

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Reports on the topic "Coal mines and mining"

1

Srajer, V., R. Espinoza, and D. Muir. Evaluation of applicable to mine planning and scheduling packages coal mining in Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/304840.

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2

Dick, Warren, Yona Chen, and Maurice Watson. Improving nutrient availability in alkaline coal combustion by-products amended with composted animal manures. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7587240.bard.

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Hypothesis and Objectives: We hypothesized that coal combustion products (CCPs), including those created during scrubbing of sulfur dioxide from flue gases, can be used alone or mixed with composted animal manures as effective growth media for plants. Our specific objectives were, therefore, to (1) measure the chemical, physical and hydraulic properties of source materials and prepared mixes, (2) determine the optimum design mix of CCPs and composted animal manures for growth of plants, (3) evaluate the leachate water quality and plant uptake of selected elements from prepared mixes, (4) quantify the interaction between composted animal manures and B concentrations in the mixes, (5) study the availability of P to plants growing in the mixes, and (6) determine the microbial community and siderophores involved in the solubilization of Fe and its transfer to plants. Background: In recent years a major expansion of electricity production by coal combustion has taken place in Israel, the United States and the rest of the world. As a result, a large amount of CCPs are created that include bottom ash, fly ash, flue gas desulfurization (FGD) gypsum and other combustion products. In Israel 100,000 tons of fly ash (10% of total CCPs) are produced each year and in the US a total of 123 million tons of CCPs are produced each year with 71 million tons of fly ash, 18 million tons of bottom ash and 12 million tons of FGD gypsum. Many new scrubbers are being installed and will come on-line in the next 2 to 10 years and this will greatly expand the amount of FGD gypsum. One of the main substrates used in Israel for growth media is volcanic ash (scoria; tuff). The resemblance of bottom coal ash to tuff led us to the assumption that it is possible to substitute tuff with bottom ash. Similarly, bottom ash and FGD gypsum were considered excellent materials for creating growth mixes for agricultural and nursery production uses. In the experiments conducted, bottom ash was studied in Israel and bottom ash, fly ash and FGD gypsum was studied in the US. Major Achievements: In the US, mixes were tested that combine bottom ash, organic amendments (i.e. composts) and FGD gypsum and the best mixes supported growth of tomato, wheat and marigolds that were equal to or better than two commercial mixes used as a positive control. Plants grown on bottom ash in Israel also performed very well and microelements and radionuclides analyses conducted on plants grown on bottom coal ash proved it is safe to ingest the edible organs of these plants. According to these findings, approval to use bottom coal ash for growing vegetables and fruits was issued by the Israeli Ministry of Health. Implications: Bottom coal ash is a suitable substitute for volcanic ash (scoria; tuff) obtained from the Golan Heights as a growth medium in Israel. Recycling of bottom coal ash is more environmentally sustainable than mining a nonrenewable resource. The use of mixes containing CCPs was shown feasible for growing plants in the United States and is now being evaluated at a commercial nursery where red sunset maple trees are being grown in a pot-in-pot production system. In addition, because of the large amount of FGD gypsum that will become available, its use for production of agronomic crops is being expanded due to success of this study.

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3

Dick, Warren, Yona Chen, and Maurice Watson. Improving nutrient availability in alkaline coal combustion by-products amended with composted animal manures. United States Department of Agriculture, December 2006. http://dx.doi.org/10.32747/2006.7695883.bard.

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Abstract:

Hypothesis and Objectives: We hypothesized that coal combustion products (CCPs), including those created during scrubbing of sulfur dioxide from flue gases, can be used alone or mixed with composted animal manures as effective growth media for plants. Our specific objectives were, therefore, to (1) measure the chemical, physical and hydraulic properties of source materials and prepared mixes, (2) determine the optimum design mix of CCPs and composted animal manures for growth of plants, (3) evaluate the leachate water quality and plant uptake of selected elements from prepared mixes, (4) quantify the interaction between composted animal manures and B concentrations in the mixes, (5) study the availability of P to plants growing in the mixes, and (6) determine the microbial community and siderophores involved in the solubilization of Fe and its transfer to plants. Background: In recent years a major expansion of electricity production by coal combustion has taken place in Israel, the United States and the rest of the world. As a result, a large amount of CCPs are created that include bottom ash, fly ash, flue gas desulfurization (FGD) gypsum and other combustion products. In Israel 100,000 tons of fly ash (10% of total CCPs) are produced each year and in the US a total of 123 million tons of CCPs are produced each year with 71 million tons of fly ash, 18 million tons of bottom ash and 12 million tons of FGD gypsum. Many new scrubbers are being installed and will come on-line in the next 2 to 10 years and this will greatly expand the amount of FGD gypsum. One of the main substrates used in Israel for growth media is volcanic ash (scoria; tuff). The resemblance of bottom coal ash to tuff led us to the assumption that it is possible to substitute tuff with bottom ash. Similarly, bottom ash and FGD gypsum were considered excellent materials for creating growth mixes for agricultural and nursery production uses. In the experiments conducted, bottom ash was studied in Israel and bottom ash, fly ash and FGD gypsum was studied in the US. Major Achievements: In the US, mixes were tested that combine bottom ash, organic amendments (i.e. composts) and FGD gypsum and the best mixes supported growth of tomato, wheat and marigolds that were equal to or better than two commercial mixes used as a positive control. Plants grown on bottom ash in Israel also performed very well and microelements and radionuclides analyses conducted on plants grown on bottom coal ash proved it is safe to ingest the edible organs of these plants. According to these findings, approval to use bottom coal ash for growing vegetables and fruits was issued by the Israeli Ministry of Health. Implications: Bottom coal ash is a suitable substitute for volcanic ash (scoria; tuff) obtained from the Golan Heights as a growth medium in Israel. Recycling of bottom coal ash is more environmentally sustainable than mining a nonrenewable resource. The use of mixes containing CCPs was shown feasible for growing plants in the United States and is now being evaluated at a commercial nursery where red sunset maple trees are being grown in a pot-in-pot production system. In addition, because of the large amount of FGD gypsum that will become available, its use for production of agronomic crops is being expanded due to success of this study.

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4

Singhal, R. K. Mining planning and equipment selection in coal mining. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/304824.

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5

Singhal, R. K., and T. S. Golosinski. Continuous mining systems for surface mining of coal. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/304984.

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6

Udd, J. E., and J. Pathak. Mining automation in Canadian hardrock mines - a progress report. Natural Resources Canada/CMSS/Information Management, 1991. http://dx.doi.org/10.4095/328903.

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7

Merritt, R. D. History of Alaskan coal mining. Alaska Division of Geological & Geophysical Surveys, 1988. http://dx.doi.org/10.14509/1349.

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8

Srajer, V. Surface coal mining in Yugoslavia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/304979.

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9

Romaniuk, A. S., and H. G. Naidu. Coal mining in Canada: 1986. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/306997.

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10

Seiler, J. P., M. P. Valoski, and M. A. Crivaro. Noise exposures in US coal mines. Office of Scientific and Technical Information (OSTI), May 1994. http://dx.doi.org/10.2172/10147493.

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