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1
Tao, Yunchao. "Analysis of Foundation Pit Design of Metro Station in Complex Environment". Advances in Materials Science and Engineering 2021 (2 dicembre 2021): 1–9. http://dx.doi.org/10.1155/2021/2995380.
Abstract (sommario):
The complex engineering geological conditions and the surrounding environmental conditions of the existing subway lines and adjacent buildings have significantly deepened the difficulty of metro station foundation pit design and construction. Based on the foundation pit project of Luboyuan Station of Nanjing Metro Line 9, this study chooses a reasonable foundation pit support design scheme to carry out related research by analyzing the site geological environmental conditions. Through the analysis and evaluation of the engineering geological conditions of the engineering site, the engineering geological problems that may occur in the process of construction are given. According to the lithologic characteristics of the site strata, the hydrogeological conditions, and the features of the underground engineering structure, the design of the foundation pit supporting system is optimized and analyzed. The results show that making full use of the geological features of strata and adopting effective support methods can ensure the safety of foundation pit construction, reduce the cost of engineering description, and shorten the construction period, which can be used as a reference for similar projects and construction.
2
Zhang, Hong Chang, Yu Sheng Li e Jie Bao. "Study on the Seismic Damaging Effects of Mountainous Towns in Wenchuan Earthquake". Advanced Materials Research 446-449 (gennaio 2012): 2041–47. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.2041.
Abstract (sommario):
Through the survey and research on seismic damage phenomena of damaged towns by Wenchuan Earthquake and geological environment , this article identify that the seismic damage effect of towns damaged by Wenchuan Earthquake mainly includes four types which are fault dislocation effect、site and foundation effect、topography motion amplified action and geologic hazard effect. Site selection of the reconstruction of damaged towns and seidmic design of building and other problems are complex and systemic engineering problems, and they refer to many complex factors such as earthquake faults、geologic hazards、national well-being and the people's livelihood, economic development and so on. The basic principles of consideration should be: for the mountain towns which are located at seismic fault zone and exist serious geological disaster, they must be avoided and relocated off-site; for the towns which are away from the fault for a distance and have no fatal geological disaster risk, we should follow the principles of "scientific planning, normative avoidance and reasonablely adjust the seismic standards" and reconstruct in the former location. Reconstruction site should also pay attention to the concealment of geological hazards, the multiplicity and long-term sustainability of induced factors and so on, so we should enhance the suitability evaluation of the geological environment and risk assessment of geological disaster.
3
Gong, Yi, Yang Liu e Qigao Li. "Long-Distance Pipe Jacking in Complex Urban Geological Environment". Journal of Architectural Research and Development 6, n. 1 (12 gennaio 2022): 7–12. http://dx.doi.org/10.26689/jard.v6i1.2888.
Abstract (sommario):
A steel underground pipeline with a diameter of 2.4 m and a total length of 3,617 m (plate thickness of 26 mm) has been constructed in a city in central Hubei, and the engineering, procurement, and construction (EPC) project has been lifted from the upstream channel to supplement water to the downstream lake inside the city. Through preliminary geological survey data, site topographic and geomorphic survey, urban construction, as well as the requirements of the construction party, the preliminary arrangement of working wells and receiving wells as well as the selection and customization of pipe jacking machines have been proposed. Frequency conversion motor and remote monitoring technology are adopted for geotechnical change and long-distance pipe jacking. Through detailed survey, the rock and soil change section as well as gradual change conditions have been determined, the accuracy of construction mechanics calculation and construction operation control have improved, the basis and analysis basis are provided, and some experiences in construction operation are summarized.
4
de Kemp, Eric A. "Spatial agents for geological surface modelling". Geoscientific Model Development 14, n. 11 (1 novembre 2021): 6661–80. http://dx.doi.org/10.5194/gmd-14-6661-2021.
Abstract (sommario):
Abstract. Increased availability and use of 3D-rendered geological models have provided society with predictive capabilities, supporting natural resource assessments, hazard awareness, and infrastructure development. The Geological Survey of Canada, along with other such institutions, has been trying to standardize and operationalize this modelling practice. Knowing what is in the subsurface, however, is not an easy exercise, especially when it is difficult or impossible to sample at greater depths. Existing approaches for creating 3D geological models involve developing surface components that represent spatial geological features, horizons, faults, and folds, and then assembling them into a framework model as context for downstream property modelling applications (e.g. geophysical inversions, thermo-mechanical simulations, and fracture density models). The current challenge is to develop geologically reasonable starting framework models from regions with sparser data when we have more complicated geology. This study explores the problem of geological data sparsity and presents a new approach that may be useful to open up the logjam in modelling the more challenging terrains using an agent-based approach. Semi-autonomous software entities called spatial agents can be programmed to perform spatial and property interrogation functions, estimations and construction operations for simple graphical objects, that may be usable in building 3D geological surfaces. These surfaces form the building blocks from which full geological and topological models are built and may be useful in sparse-data environments, where ancillary or a priori information is available. Critical in developing natural domain models is the use of gradient information. Increasing the density of spatial gradient information (fabric dips, fold plunges, and local or regional trends) from geologic feature orientations (planar and linear) is the key to more accurate geologic modelling and is core to the functions of spatial agents presented herein. This study, for the first time, examines the potential use of spatial agents to increase gradient constraints in the context of the Loop project (https://loop3d.github.io/, last access: 1 October 2021) in which new complementary methods are being developed for modelling complex geology for regional applications. The spatial agent codes presented may act to densify and supplement gradient as well as on-contact control points used in LoopStructural (https://www.github.com/Loop3d/LoopStructural, last access: 1 October 2021) and Map2Loop (https://doi.org/10.5281/zenodo.4288476, de Rose et al., 2020). Spatial agents are used to represent common geological data constraints, such as interface locations and gradient geometry, and simple but topologically consistent triangulated meshes. Spatial agents can potentially be used to develop surfaces that conform to reasonable geological patterns of interest, provided that they are embedded with behaviours that are reflective of the knowledge of their geological environment. Initially, this would involve detecting simple geological constraints: locations, trajectories, and trends of geological interfaces. Local and global eigenvectors enable spatial continuity estimates, which can reflect geological trends, with rotational bias, using a quaternion implementation. Spatial interpolation of structural geology orientation data with spatial agents employs a range of simple nearest-neighbour to inverse-distance-weighted (IDW) and quaternion-based spherical linear rotation interpolation (SLERP) schemes. This simulation environment implemented in NetLogo 3D is potentially useful for complex-geology–sparse-data environments where extension, projection, and propagation functions are needed to create more realistic geological forms.
5
Rudko, G., e Ye Yakovlev. "Modern factories of regional engineering-geological conditions of Ukraine changes". Мінеральні ресурси України, n. 1 (3 giugno 2020): 15–26. http://dx.doi.org/10.31996/mru.2020.1.15-26.
Abstract (sommario):
The article analyzes modern regional changes in engineering and geological conditions of Ukraine due to the complex impact of technogenesis and global climate changes. This is primarily due to the predominance of loess and loamy loess rocks in the upper part of the geological section (up to 65 % of the state) in the formation of technogenic-geological systems “technogenic object-geological environment”. Regional regulation of surface runoff (a cascade of reservoirs of the Dnieper River, up to 38000 pounds, network of channels) significantly disrupted the water-energy exchange of rocks within the upper zone of the geological environment, intensified regional changes of geomechanical parameters (compressive strength, adhesion, angle of a slope) to the factors of global climate change (increasing magnitude and uneven rainfall, warming etc.).
The authors evaluated the new processes of changes in engineering-geological parameters of loesses and loamy loess’ rocks due to the disturbances of their mass-energy (water-heat) transfer, the influence of seismic stresses, complex transformations of the geological environment of industrial-urban agglomerations. The performed analysis showed that changes in engineering-geological conditions are most actively developingwithin the sites of industrial-urban agglomerations, which is caused by the complex action of water and heat losses from engineering networks, changes in relief, geodynamic impacts of transport and construction works. Maximum changes of engineering-geological conditions within towns and settlements are observed in the developed (“old”) mining areas during the flooding of mines, subsidence of surface.
It is shown that a new model of the State Engineering-Geological Map of Ukraine is needed, scientific substantiation of the maximum permissible changes of the engineering-geological parameters of the geological environment for different technogenic-geological systems “technogenic object-geological environment”.
6
Fang, Yanzhuo. "Study on Remote Sensing Dynamic Monitoring of Geological Environment". Remote Sensing 9, n. 2 (18 ottobre 2020): 30. http://dx.doi.org/10.18282/rs.v9i2.1106.
Abstract (sommario):
<p>With the continuous development of science and technology, remote sensing technology has become more and more mature and more advanced in our country, and the application of remote sensing technology to the monitoring of geological environment is also an important research problem in continuous improvement in recent years. China has a vast land area, rich mineral resources, strong geological diversity and complex geological environment, and the geological exploration of the origin of mineral resources is a prerequisite for the rationality of mineral development. Therefore, the remote sensing dynamic monitoring of geological environment plays a decisive role in mineral development. With the development of mineral resources, China’s mineral environment is getting worse and worse. In order to ensure the long-term development of mineral resources and the safety of mining personnel. Remote sensing dynamic monitoring of geological environment in mineral areas is of great significance. Based on this, this paper will study the remote sensing monitoring data of mining, and provide help for the remote sensing monitoring of geological environment of mineral development in China.</p>
7
Ren, Xiang, Hua Juan Yuan e Rong Zhao. "Geological Environment and Prevention of Geological Disasters in Inner Mongolia Huogeqi-Qinshan Highway". Advanced Materials Research 573-574 (ottobre 2012): 337–41. http://dx.doi.org/10.4028/www.scientific.net/amr.573-574.337.
Abstract (sommario):
Geological environment characteristics were analyzed from rough weather, complex geological conditions, broken rock, development taluses, and densely distributed largeand stiff slopes,through an integrated comprehensive analysis and field reconnaissance.Control measures have been proposed：Optimize the line and the rock pile reinforcement is used to handle Class II and Class IIIrock pile，According to the different sections of the appropriate raise the road elevation Or set a larger cross section of bridges and culverts, and supplemented by the appropriate flood control measures to prevent the canyon embankment floods，This paper can be used as the reference of other roads.
8
Wang, Xinfeng, Wengang Liu, Xiaojun Jiang, Qiao Zhang e Youyu Wei. "Evolution Characteristics of Overburden Instability and Failure under Deep Complex Mining Conditions". Geofluids 2022 (27 luglio 2022): 1–16. http://dx.doi.org/10.1155/2022/6418082.
Abstract (sommario):
Aiming at the problems of intensified deformation and serious stress damage of stope overburden during mining in deep typical geological environment, taking the deep mining face of a mine in the northwest as the research background, the characteristics and influencing factors of overburden collapse in deep geological environment are analyzed, a comprehensive evaluation system affecting overburden instability and deformation is established, and the temporal and spatial evolution law of deep stope roof failure is obtained by using the “three-zone” distribution theory of overburden, analytic hierarchy process, and numerical simulation method. The results show that high ground stress has the most significant impact on the geological environment of deep stope, followed by the properties of surrounding rock, hydrogeological conditions, and unloading disturbance. The damage degree of the plastic zone at the top of the overburden is greater than that at the bottom. With the increase of mining time, the damage range of the roof and floor gradually increases. In the process of coal seam mining, the increasing range and sinking trend of roof stress are larger near the working face, and the farther away from the working face, the increasing range decreases continuously. The research conclusion provides an important reference for coal seam safety mining and surrounding rock control in complex environments such as deep mining, high stress, and strong disturbance.
9
Zhu, Qing Qing, Qiang Qiang Miao e Shu Ping Jiang. "On Karst Water Inrush (Gushing) Geological Environment in Pingyang Tunnel". Applied Mechanics and Materials 580-583 (luglio 2014): 1008–12. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.1008.
Abstract (sommario):
According to Pingyang tunnel karst complex groundwater environment ,This paper carried out thorough theoretical analysis and field observation from Pingyang tunnel stratum rock properties, engineering geology, hydrogeology, the surrounding patch, runoff and drainage and the changes of surface water environment, as well as tunnel excavating. The complex formation mechanism has given in the Pingyang tunnel karst water . Some effective references had put forward for the engineering treatment, provided some valuable references for other similar underground engineering construction.
10
Gavrilov, A. A. "GEOLOGICAL AND GEOMORPHOLOGICAL RESEARCH METHODOLOGY FOR METALLOGENIC PURPOSES". Bulletin of Kamchatka Regional Association «Educational-Scientific Center». Earth Sciences, n. 3(51) (2021): 84–95. http://dx.doi.org/10.31431/1816-5524-2022-3-51-84-95.
Abstract (sommario):
The basic questions of the methodology of geological and geomorphological study (ore geomorphology, morphostructural analysis, morphotectonics, neotectonics) of ore-bearing territories are considered. The concepts of "geomorphologic systems organization element" as the smallest particle of matter preserving the structure and properties of a mineral, as well as "objectives", "objects" and "subjects" of morphostructural and morphotectonic studies for solving problems of metallogeny have been formulated. In areas with complex geological structure, it is recommended to carry out complex of morphostructural and morphotectonic works with repeated solution of direct and inverse problems: relief and geological environment, geological environment relief. This will make it possible to establish the totality of available deterministic and chronological relations between landforms and structural elements of the lithosphere. Along with the solution of traditional problems of ore geomorphology, it is proposed to use the developed original complex of morphostructural and morphotectonic studies.
11
Gavrilov, A. A. "GEOLOGICAL AND GEOMORPHOLOGICAL RESEARCH METHODOLOGY FOR METALLOGENIC PURPOSES". Bulletin of Kamchatka Regional Association «Educational-Scientific Center». Earth Sciences, n. 3(51) (2021): 84–95. http://dx.doi.org/10.31431/1816-5524-2022-3-51-84-95.
Abstract (sommario):
The basic questions of the methodology of geological and geomorphological study (ore geomorphology, morphostructural analysis, morphotectonics, neotectonics) of ore-bearing territories are considered. The concepts of "geomorphologic systems organization element" as the smallest particle of matter preserving the structure and properties of a mineral, as well as "objectives", "objects" and "subjects" of morphostructural and morphotectonic studies for solving problems of metallogeny have been formulated. In areas with complex geological structure, it is recommended to carry out complex of morphostructural and morphotectonic works with repeated solution of direct and inverse problems: relief and geological environment, geological environment relief. This will make it possible to establish the totality of available deterministic and chronological relations between landforms and structural elements of the lithosphere. Along with the solution of traditional problems of ore geomorphology, it is proposed to use the developed original complex of morphostructural and morphotectonic studies.
12
Li, Zheng Shan, Nai Qi Shen, Yong Bo Teng, Yu Shen Yan, Guang Yang e Wen Yan Pan. "Research on Geological Safety of the Southern Section of Gouzhigou Tunnel in the Pipeline Project". Applied Mechanics and Materials 353-356 (agosto 2013): 1614–18. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1614.
Abstract (sommario):
The southern section of Gouzhigou tunnel, which is in the pipeline project of the natural gas transmission from the western to the eastern region, is located in the medium mountain canyon area in the northern Tianshan fold belt, Xinjiang. The physical geography and geological environment conditions at the tunnel project area are complex. After a field survey, the geological hidden trouble in the project area mainly are unstable rock and collapses at the cave entrance, unstable slopes, abandoned slag slopes and the stability of surrounding rocks. In this paper, the distribution, size and characteristics of the geological hazards are described. The risks of the hazards and the impacts of the tunnel construction safety are analyzed. At last based on the evaluation results of geological security, prevention measures are put forward to remove or weaken the geologic hidden trouble.
13
Trushko, Olga Vladimirovna, Vladimir Leonidovich Trushko e Petr Alexeevich Demenkov. "Arrangement of Multistory Underground Parking Garages in Complex Engineering and Geological Environment". International Journal of Mathematical, Engineering and Management Sciences 5, n. 5 (1 ottobre 2020): 897–912. http://dx.doi.org/10.33889/ijmems.2020.5.5.069.
Abstract (sommario):
This article discusses possible variants of underground parking lot in complex engineering and geological environment of St Petersburg, namely: soil excavation in open pit and excavation with solid supports. These methods were analyzed with regard to reasonability for preset construction conditions. A series of predictions were performed using Plaxis 2D software, two variants were described in this article: excavation with the bottom elevation of +0.560 m and excavation with the bottom elevation of -2,500 m and adjacent building (at the distance of 2.5 m). The formulated problems were solved using 2D models. The model was based on the Mohr–Coulomb theory which facilitated estimation of geotechnical environment in the vicinity of the construction. Predictions of retaining wall according to the two considered variants have demonstrated that maximum soil settlement near the excavation is 20 mm and the maximum additional settlement of building at the distance of 2 m from the excavation is 30 mm, which in both cases corresponds to predetermined specifications.
14
Huang, Qingfei, e Kaihang Han. "Progressive Failure Mechanism of Shield Tunnel Face in Complex Urban Geological Environment". Buildings 14, n. 5 (10 maggio 2024): 1356. http://dx.doi.org/10.3390/buildings14051356.
Abstract (sommario):
The construction of multiple tunnels across inland rivers has had a significant influence on the improvement of the transportation infrastructure. The technology for constructing tunnels is progressing towards the development of larger cross-sections, longer distances, and the ability to withstand high hydraulic pressure in complex hydrogeological conditions, including high-permeability strata. In order to ensure the face stability of shield tunnels under high hydraulic pressure that crosses a fault fracture zone, it is necessary to study the progressive failure mechanism of shield tunnel faces induced by high hydraulic pressure seepage. This paper employs finite element numerical simulation software to methodically examine the variation in the characteristics of the water seepage field, limiting support force, and face stability failure mode of shield tunnels passing through fault fracture zones with high hydraulic pressure under varying fault fracture width zones. The results show that the formation hydraulic gradient will progressively widen when the tunnel face is located within the undisturbed rock mass and is advanced towards the area of fault fracture. This will raise the likelihood of instability in the shield tunnel and progressively raise the limiting support force on the tunnel face. Moreover, as the tunnel face nears the region of fault fracture within the undisturbed rock mass, the damage range increases gradually. In addition, due to the increase in seepage force, the angle between the failure area and the horizontal plane becomes more and more gentle. On the contrary, as the tunnel’s face moves closer to the undisturbed rock mass from the region of the fault fracture, the damage range gradually decreases, and the dip angle between the damage area and the horizontal plane becomes steeper and steeper due to the decreasing seepage force in the process. The study findings presented in this work are highly significant, both theoretically and practically, for the design and management of safety.
15
Б.Тамир, Л.Жаргал e И.Гүррагчаа. "Дөчийн голын дүүргийн аккрецын хөгжил". Геологийн асуудлууд 15 (23 febbraio 2023): 7–20. http://dx.doi.org/10.22353/.v15i01.2268.
Abstract (sommario):
Duchgol region (M-49-XVIII,XXIV, M-50-XIII,XIV,XIX,XX) located in Dashbalbar sum of Dornod aimag. Duchgol site geological is related to Late Permian Lower Triassic Duchgol formation sedimentary rocks and Late Jurassic Yamalkh and Chuluunkhoroot complex granitoid. This research have developed a new geologic map of geological mapping conducted Duch river region. The study also identified geodynamics environment based on the results of the sedimentary and petrochemicals. This depression was formed accretionary wedge late paleozoic early mesozoic. The combined with lithological section established distribution Duchgol formation. This Duchgol sedimentology studies, such as arkoz compositions n among ingredients and chemical weathering intensity.
16
Shi, Shao Jian, Liang Xun Shuo e Xing Tao Cui. "The Application of the Analytic Hierarchy Process (AHP) in Mine Geological Environment Evaluation". Applied Mechanics and Materials 416-417 (settembre 2013): 2020–24. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.2020.
Abstract (sommario):
Mine environmental geological assessment usually uses the expert subjective assignment to determine the weights of affecting factors, but the mine environmental geological problems are the result of many factors. Each factor is complex on the suitability of the influence factors, and the factors interrelate and restrict each other, so the human factor is of great impact. Take the geological quality evaluation of the mine environment of Shanxi, Shaanxi and Inner Mongolia mining area as an example, this article discusses in detail the process of determining the weights of evaluation factors by using the analytic hierarchy process (AHP), which increases the scientific nature of the assignment and reduces the subjectivity, which achieves satisfactory results.
17
Shao, Ai Jun, Ji Hua Chen e Yuan Huang. "3D Visual Geology-Modeling in Wannian Mine of Fengfeng Coalfield". Advanced Materials Research 671-674 (marzo 2013): 2072–75. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.2072.
Abstract (sommario):
Based on the analysis of regional geology and hydrogeological conditions of Wannian mine of Fengfeng coalfield, according to field's borehole data, geological data and hydrogeological data, we use GMS software to make the three-dimensional visualization strata modeling in Wannian mine of Fengfeng coalfield. Through cutting geological model built in different directions or at different levels and rotating to different directions and different angles, the complex underground geological environment is displayed in three-dimension, which helps geologists to analyze the geological conditions and solve various geological problems.
18
Zhang, Qing. "Spatial Correlation Analysis of Geological Disaster and Geological Background in Liaoning Region". Applied Mechanics and Materials 744-746 (marzo 2015): 1733–35. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1733.
Abstract (sommario):
Liaoning Province is located in the southern part of northeast China,and within two first degree tectonic units,that is,Sino-Korean quasi-platform and Tianshan-Xingmeng geosynclinals fold system,it has complex geological environment,strong natural variability and frequent geological disasters. Taking GIS as a platform,selecting the factors of the stratigraphic,magmatic,tectonic,seismic and geological hazard,and using empirical weighting method,the paper analyzed the spatial relationship of geological disaster and geological background and acquired that Liaohe Group and Triassic is the major geological disaster strata and magmatic rock area is the more developed area of geological disaster,and disaster points mainlydeveloped in the Triassic of the Mesozoic.
19
Liu, Zhe, Wenke Li, Lei Zhang e Jiajing Li. "Fine Geological Modeling of Complex Fault Block Reservoir Based on Deep Learning". Wireless Communications and Mobile Computing 2022 (9 marzo 2022): 1–16. http://dx.doi.org/10.1155/2022/9670311.
Abstract (sommario):
Nowadays, people’s demand for underground mineral resources is increasing, and geological disasters have occurred frequently in recent years. Geological disasters refer to geological effects or geological phenomena that are formed under the action of natural or man-made factors, causing loss of human life and property, and damage to the environment; such as landslides, collapses, mudslides, and ground subsidence. Under such a background, people must accelerate the exploration of complex geological structures. This paper is aimed at using the methods and concepts of deep reinforcement learning. Deep learning is to learn the inherent laws and representation levels of sample data. The information obtained during these learning processes is of great help to the interpretation of data such as text and images. In this way, the fine geology of complex fault-block reservoirs is modeled and studied. Geological structures and phenomena are discussed through convolutional neural network models and computer techniques. At the same time, the multitask bird recognition network is used to extract and classify geological images, so as to construct geological model maps with different spatial structures. Finally, the quality of the fault reconstruction model, the calculation of reservoir geological simulation reserves, and the evaluation of the water injection development effect of complex fault blocks are analyzed. In the evaluation of the development effect of water injection in complex fault blocks, comparing the relationship curve between the actual comprehensive water content and the oil recovery factor with the standard curve, the comprehensive water content of the initial block increased rapidly. Through timely and dynamic water allocation and comprehensive management, the water cut rising speed is controlled. The current comprehensive water cut of the reservoir is between 60% and 80%, the actual curve is between 25% and 35%, and the estimated waterflooding recovery is about 30%.
20
Podlipskiy, Ivan, Pavel Zelenkovskiy, Stanislav Dubrova e Anastasiya Eremeeva. "Environmental and geological studies of anthropogenic-modified geological bodies". E3S Web of Conferences 371 (2023): 03026. http://dx.doi.org/10.1051/e3sconf/202337103026.
Abstract (sommario):
The paper is devoted to the results of the ecological and geochemical study of soil and ground conditions in the area of solid municipal waste (SMW) landfills in the central regions of the Republic of Crimea on the territory of the first mountain belt. In the work used as a model two sites with virtually identical composition of SMW, in similar natural and climatic conditions, but with different age of formation, which also allows to evaluate the long-term prospects of the ecological and geological state of the adjacent areas of such objects in the arid conditions of the Crimean mountains. In the work assessed the vertical and lateral migration of pollutants, the degree of influence on the adjacent territory, calculated the complex indicators of the state of individual components of the environment, carried out eluate phytotesting with cress (Lepidium sativum) and radish (Raphanus sativus), and determined the toxicity of soil and soil samples. Recommendations on the territory reclamation and applied technologies of disturbed land restoration are given.
21
Wu, Xue Wei, Guang Dao Bao, Wei Wei Jia, Chang Zhai e Xing Li. "Remote Sensing Based Analysis of the Mine Geological Environment Evaluation". Applied Mechanics and Materials 121-126 (ottobre 2011): 2839–44. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.2839.
Abstract (sommario):
Mine development can benefit mankind, but also cause ecological damage to the environment; bad influence threatens the lives and safety. Environmental pollution caused by mining is a complex; system changes, no single factor and the instantaneous direction indicators are not given the trend of the entire environmental system. Remote sensing data with regional and cyclical characteristics, using remote sensing technology to monitor the mine environment has a strong advantage, is one of the key people to study. By using time series remote sensing data, extraction mining environment-related indicators, and actual work to establish a complete index system and using AHP to determine weights, combined with comprehensive evaluation model of experimental area to study, and achieved good results.
22
Martelet, Guillaume, Eric Gloaguen, Arne Døssing, Eduardo Lima Simoes da Silva, Johannes Linde e Thorkild M. Rasmussen. "Airborne/UAV Multisensor Surveys Enhance the Geological Mapping and 3D Model of a Pseudo-Skarn Deposit in Ploumanac’h, French Brittany". Minerals 11, n. 11 (12 novembre 2021): 1259. http://dx.doi.org/10.3390/min11111259.
Abstract (sommario):
Taking advantage of a multi-sensor (multispectral and magnetic) drone survey, we address the detailed geological mapping and modeling of a mineralization in its geological environment. We stress that these high-resolution data allow us to bridge the gap between field observations and a regional aeromagnetic survey. On the one hand, the combination of multispectral imagery with field geological observations enhances detailed geological mapping. On the other hand, the combination of field magnetic susceptibility measurement and their use in detailed to regional magnetic modeling, constrained respectively by UAV-borne and airborne magnetic surveys, allows deriving a model of the mineralization consistent across the scales. This is demonstrated in a case study in a complex polyphased magmatic-metamorphic environment on the coast of French Brittany. The target area hosts a pseudo-skarn mineralization, exhibiting an outstanding magnetic anomaly. The combination of remotely sensed and field data allows deriving a realistic conceptual and geometrical model of the magnetic mineralization in its geological environment, tightly constrained by field observations and measurements.
23
Pyrikov, Oleksii V., Sergii M. Chumachenko e Yevhenii О. Yakovlev. "Analysis of formation of ecological-technogenic and social threats of life safety in the coal industry zone of Donbass". Environmental safety and natural resources 38, n. 2 (30 giugno 2021): 5–17. http://dx.doi.org/10.32347/2411-4049.2021.2.5-17.
Abstract (sommario):
The article considers the need to form an information-analytical complex of natural-technogenic geosystem (NTGS) of Donbass "regional technogenic complex – environment" as a tool base for building a model of ecological and economic development. Donbass (area up to 5.8 thousand km2 with a population of more than 4 million people) is a technogenic-geological system (TGS) ("regional technogenic complex – geological environment"). In addition, there are more than 4,000 potentially dangerous objects within the PTGS of Donbass. The predominance of regional irreversible changes in the ecological parameters of the geological environment as the main "depot" of the technogenesis effects (deformation of the earth's surface, geochemical pollution of landscapes, surface and groundwater, biodiversity loss, etc.) necessitates the preservation of its ecological resources for further socio-economic recovery of the Donbass region. Comparison of the impact of natural resource potential of the geological environment (GS) of Donbass and the Chornobyl Exclusion Zone showed the fundamental importance of balancing the interaction of the lithosphere with the surface hydrosphere, near-surface atmosphere and biosphere for the formation of socio-economic parameters and safety of life activity. Flooding of coal mines and rising of groundwater level to surface are the critical ecological factors of post-mining situation within Donbas. The performed analysis of ecological and technogenic parameters of NTGS of mining areas within Donbass also showed that in case of further increase in the number of flooded mines, advanced scientific development of maximum allowable changes in the environment is necessary. It is also noted that all selected tools for the formation of life safety should have a clear justification of socio-economic and environmental-technological parameters. All this should provide an opportunity to assess the efficiency of the ecological and economic system, methods of its construction and possible forecasting.
24
Liu, Yong Sheng. "Mechanical Property of the Deep Surrounding Hard Rock under Complex Environment". Advanced Materials Research 734-737 (agosto 2013): 764–67. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.764.
Abstract (sommario):
The complicated geological condition of the deep roadway is the important factors to influence the stability of the surrounding rock and the safety of mining. The rock specimen is taken from a coal mining of Jiangxi province. The chemical solution with different ion concentrations and PH value were prepared to simulate the complex environment of the deep roadway, and the specimens were immersed in the solution then carried out the axial compression test. The strength and other mechanical parameters of the specimen were obtained and the experimental results showed that the strength of the specimen being immersed all are lower than natural state. The reduced values become large with the immersed time and acid value increasing.
25
Song, Yuanwen, Lei Gao, Haipin He e Juan Lu. "Analysis of Geoecological Restoration in Mountainous Cities Affected by Geological Hazards with Interval Intuitive Fuzzy Information". Computational Intelligence and Neuroscience 2022 (15 ottobre 2022): 1–13. http://dx.doi.org/10.1155/2022/6555005.
Abstract (sommario):
With the progress of the industrial revolution and the development of modern science and technology, China’s urbanization process has been promoted. Urban and rural economic and social construction has greatly improved the local appearance and social structure. Human activities and natural ecology have affected the whole geological-ecological process, further aggravated the geological-ecological damage, and caused more serious geological disasters, especially in some places (especially in mountainous areas). In recent years, strong geological disasters have occurred in Wenchuan, Yushu, and Lushan regions of China, which not only seriously endanger the life safety and social life of the affected people, but also damage the geological-ecological structure and social functions of the region, especially in the geographically sensitive Alpine urban areas. It also produced many secondary disasters, such as landslides and land collapses. Mountainous cities and towns have special requirements for construction land, which is difficult to construct. Industrial land resources are in short supply, urban and rural comprehensive construction land is not active, and cultivated land area resources are tight. Compared with plain towns with superior geological conditions, mountain towns are more vulnerable to adverse geological environment such as geological ecology, landform, ecological vegetation, and hydrology. The geographical natural environment, as an organic whole that combines and interacts with the geomorphic natural environment, the biological-ecological environment, and the human social management environment, is the main reason that affects the development of mountain towns. Once the mountain geological ecology is destroyed, a series of geological disasters will often be induced, which will seriously restrict the healthy development of mountain towns. Scientific management of the geological environment plays an important role in the assessment of the geological environment restoration of mountain towns after disasters. Therefore, taking the most beautiful counties in China, Baoxing City, and Tianquan County as examples, on the basis of studying the complex geological-ecological theory of geological disasters, this paper further improves the traditional ecological footprint model in China, and using the interval direct fuzzy information constructs the metric index of ecological restoration scheme of mountain towns, and determines the evaluation index and optimal scheme of ecological restoration. From the aspects of landscape layout construction, disaster prevention and mitigation planning and improvement, and environmental restoration project, the future geoecological restoration and response strategy of Lushan County are pointed out, which provide guidance for the postdisaster geoecological safety layout construction.
26
Kukharik, E. A., e A. V. Matveyev. "Integrated assessment of technogenic transformation of the geological environment in the southwestern region of Belarus". Doklady of the National Academy of Sciences of Belarus 67, n. 5 (31 ottobre 2023): 425–32. http://dx.doi.org/10.29235/1561-8323-2023-67-5-425-432.
Abstract (sommario):
The article presents the results of assessment of technogenic transformation of the geological environment in the territory of the southwestern region of Belarus under the influence of various human economic activities. The research was based on the application of a complex methodology, including the study of published and fund sources, geological, geomorphological, topographic and cadastral maps, plans of settlements, remote survey data and materials of field and route observations, cartometric and cartographic works. It is shown that over the past 150 years, a noticeable restructuring of the earth’s surface, the structure and composition of the cover deposits has taken place in the region. This is due to a hydro-reclamation and residential development of the territory, road and railway construction, mining, accumulation of solid waste and other activities. The total volume of technogenically displaced soils in this area is 780.7 million m3, and the calculated indicator of the intensity of technogenic geological processes is 182 m3/km2/year. It is 2.4 times higher than the total impact on the earth’s surface of the region of modern exogenous geological processes.
27
Adamenko, Y., e M. Ambroziak. "Assessment of the slips resistance by engineering of the mountain-ski complex". Visnyk of the Lviv University. Series Geography, n. 36 (15 maggio 2009): 3–8. http://dx.doi.org/10.30970/vgg.2009.36.2944.
Abstract (sommario):
Article is based on researches exogenous processes on mounting skiing resorts, methods of an estimation of stability of slopes, design precautionary actions, as a basis which engineering calculations and the time forecast of change of balance of the geological environment serve. Key words: resort, slope, stability, landslip, exposition.
28
Wang, Xi, Zhen Liu, Yuyun Fan, Xingquan Liu, Mingwei Jiang, Li Cheng e Guilin Li. "Destruction Characteristics and Control Countermeasure of Shaft Surrounding Rock Mass in Complex Geological Environment". Sustainability 14, n. 20 (17 ottobre 2022): 13329. http://dx.doi.org/10.3390/su142013329.
Abstract (sommario):
Increasing construction depth, changeable failure formations, and redistributed stress conditions inevitably make the mechanical response of mining shaft rock mass complicated. The design method and construction technology of deep shaft need to be perfected urgently. We studied the stability and control method of a main shaft from −930 m located in a deep gold mine. It is concluded that the surrounding rock of the shaft faces conditions including non-high-stressed, high-stressed, and possible instabilities. The failure types include structural plane-controlled failure, deep stress induced failure, rock burst, low confining pressure shear failure, spalling, and frequent conversion of multiple failure. The damages of the surrounding rock mass at −930~−1500 m displayed “ear-shaped” damage, with damage ranges of less than 2.5 m. The shaft temporary reinforcement adopted bolt mResh beam support, in which the length of the bolt was 2.5~3 m, and the row spacing was 1.5 m. The steel type and diameter were determined by the on-site bolt pull test. This temporary support countermeasure plays an important role in preventing shaft deformation and is worth promoting in similar mines.
29
Yang, Wei, e Hai Ping Li. "Study on Control Technology of Slope in Mountainous Areas of Southwest China under Complex Geological Conditions". Applied Mechanics and Materials 580-583 (luglio 2014): 971–76. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.971.
Abstract (sommario):
Deformation process of slope has been controlled by a variety of factors due to the unique geological, hydrological and meteorological conditions. And southwest mountain areas of China has been become high incidence areas of slope diseases during highway construction and operation. According to Wendu Road K55+590 ~ K55+670 left slope engineering geological environment, the deformation process and mechanism analysis, The key factor of the slope deforming destruction is proposed. the appropriate engineering treatments and the construction control measures are also proposed based on analysis.
30
Bubnova, Оlena. "Geomechanical and geodetic methods of prediction of changes in the state of the geological environment in the mining region". Geo-Technical mechanics, n. 162 (2022): 5–12. http://dx.doi.org/10.15407/geotm2022.162.005.
Abstract (sommario):
The mining industry is one of the most destructive for the environment. The properties of rocks, the state of the natural complex, the relief, а surface and underground water regime change significantly around the deposit being developed, over a large area and at depth, which leads to the development of negative natural and technogenic processes, such as landslides, shifts, flooding, etc. Therefore, it is necessary and urgent to develop forecasts of changes in the state of the geological environment for the early development and application of measures that will reduce the negative impact or even prevent the development of landslides and flooding. In the article, the main negative natural and technogenic processes developed in mining regions are discussed. It is noted that their development depends on the factors of all processes of mining production, their regime and capacity, as well as the state of the environment itself, which preceded the action of these processes. It is shown that the parameters of the interaction of different types of environments, as well as their mutual location, also affect changes in the state of the geological environment. It is noted that the areas of the primary disturbed environment for conditions of open development of the deposit, as well as the areas of technogenic environments are calculated during the design period of the development of the deposit. And the area of the secondary disturbed environment is individual for each object, it can be roughly calculated using the presented expressions. Since the behavior of changes in the geological environment at each of the deposits being developed is different and depends on many factors, it is proposed to perform forecasting using geomechanical modeling of the state of a complex system. Due to the fact that such forecasting requires a large amount of data, it is proposed to obtain them by geodetic methods, namely by performing lidar surveying, which will allow obtaining data not only on the position in space of all points of the research area, but also to assess the state of the territory itself, which is impossible with other geodetic methods. Keywords: forecasting, state change, environmental area, geodetic methods, quarry, dump, 3d model of the territory, lidar survey, modeling.
31
Panaitescu, Casen, e Maria Stoicescu. "Impact of hydrocarbons transport through pipes on placement areas". MATEC Web of Conferences 342 (2021): 03021. http://dx.doi.org/10.1051/matecconf/202134203021.
Abstract (sommario):
Contaminants from the geological environment have induced effects specific to each category of compounds. Complex geological and geochemical studies were based on the geological drilling with depths up to 10 m. The area studied in this paper was the area of Prahova County. The paper aims to present some of the results obtained from analysis performed at soil affected by oil contamination and hydrocarbons products transported through pipelines. The maximum depth from which samples were taken was 10 m. This paper shows the need to investigate each area in terms of pollution.
32
Yang, Feng, Xudong Hu, Zhenyao Xia, Lei Cui e Qi Yang. "Susceptibility Evaluation of Debris Flow Disaster in Plateau Hydropower Cascade Development Reservoir Area". Nature Environment and Pollution Technology 22, n. 1 (2 marzo 2023): 229–36. http://dx.doi.org/10.46488/nept.2023.v22i01.021.
Abstract (sommario):
The Rumei Hydropower Station is a typical cascade hydropower development project in a plateau area. The dam site is located in an area with complex topography, lithology, and geological structure. Geological disasters are developed in the area, mainly debris flow. Thus, taking the dam site and the surrounding areas as key evaluation objects, the engineering geological characteristics, geological environment characteristics, and the susceptibility and risk of geological disasters that may be caused are predicted and evaluated. The main methods used in this assessment are the binary logistic regression model and expert evaluation. The results show that the susceptibility to geological disasters is small and medium. The results of this study could provide a scientific basis for the rationality of the general layout and site selection of the project construction in the plateau water elevator level development reservoir area.
33
PHILATOV, V., e K. VANDYSHEVA. "METHODS AND RESULTS OF STUDYING THE DYNAMIC STATE OF THE GEOLOGICAL ENVIRONMENT OF THE URBANIZED AREA (USING THE EXAMPLE OF THE YEKATERINBURG METROPOLIS)". Herald of Polotsk State University. Series F. Civil engineering. Applied sciences 32, n. 14 (29 dicembre 2022): 94–101. http://dx.doi.org/10.52928/2070-1683-2022-32-14-94-101.
Abstract (sommario):
The types and qualitative and quantitative characteristics of man-made phenomena in a significantly urbanized territory are largely determined not only by the man-made load, but mainly also by the fact that the earth's crust within this territory is in geological, structural-tectonic, geomorphological, engineering-geological, dynamic and other natural relations. About 1.5 million people live on the territory of one of the largest Yekaterinburg metropolis in Russia with an area of more than 1000 km2 and, having a complex surface relief, there are a huge number of gigantic industrial enterprises for various production purposes, a metro, four pond reservoirs. Consequently, the level of technogenic load on the geological environment is very high here. Therefore, relevant in scientific, practical and social-ecological relations is the task of studying its natural dynamic state in order to subsequently predict negative dynamic events within its limits in the form of man-made earthquakes, mountain impacts, etc. This is the problem of this article. In a substantive and methodological respect, the study of the natural dynamic state of the territory of the metropolis consists in the consideration and analysis of such important factors as: the geological and structural-tectonic structure of the geological environment, its seismicity, the nature of modern movements of the earth's surface and the natural stressed-deformed state due to tectonic and gravitational (density heterogeneity of the geological environment) forces.
34
Lemenkova, Polina. "Seismicity in the Afar Depression and Great Rift Valley, Ethiopia". Environmental Research, Engineering and Management 78, n. 1 (1 aprile 2022): 83–96. http://dx.doi.org/10.5755/j01.erem.78.1.29963.
Abstract (sommario):
Integrated mapping is essential in geological studies to assess risks of earthquake hazards. Cartographic techniques have become a commonplace approach to visualizing data in the continuous geologic and geophysical fields. However, traditional GIS mapping is a manual process with a time-consuming workflow that can lead to mistakes and misinterpretation of data. This study applied two mapping approaches to address this problem: Generic Mapping Tools (GMT) used for automated cartographic workflow employing scripts and QGIS used for traditional geologic mapping. The study area includes Ethiopia, notable for its complex geologic setting. The study aimed to analyse the relationships between the geophysical, geological, topographic and seismic setting of the country by presenting six new thematic maps:1 topography based on the GEBCO/SRTM15+ high-resolution grid;2 geological units with consistent lithology and age from the USGS database;3 geological provinces with major Amhara Plateau and Somali Province using USGS data;4 geoid based on the Earth Gravitational Model 2008 (EGM-2008) grid;5 free-air gravity anomaly model using satellite-based remote sensing data;6 seismicity showing earthquakes and volcanos from 05/03/1990 to 27/11/2020.The comparison of the topography, seismicity, geophysics and surface geology of the Afar Depression and the Great Rift Valley was based partly on extant literature on the geologic setting of Ethiopia which primarily focuses upon discussing tectonic processes that took place in the East African Rift System in the past. The current study contributes to the previous research and increases cartographic data on the geology and geophysics of Ethiopia. The outcomes can be implemented in similar regional projects in Ethiopia for geophysical and geological monitoring.
35
Liang, Yan, e Zilin Yuan. "Analysis on the Construction Safety of Hongkong-Zhuhai-Macao Cross-sea Bridge". Highlights in Science, Engineering and Technology 75 (28 dicembre 2023): 171–76. http://dx.doi.org/10.54097/vx45v044.
Abstract (sommario):
With the continuous development of highway and bridge construction in China, the number of cross-sea projects is increasing. The large scale and bad construction environment of cross-sea bridge project put forward a severe test to the construction safety. At present, although China has completed a large number of cross-sea projects, the analysis of construction safety is still insufficient. As a large cross-sea bridge, the Hongkong-Zhuhai-Macao Bridge is representative with harsh construction environment, complex geological structure and high environmental safety requirements. Therefore, this paper takes the Hongkong-Zhuhai-Macao Bridge as an example to analyze the construction safety. Firstly, the safety of construction platforms in different sea areas are discussed, and then, the construction of bridge substructure under complex geological conditions and natural environment are also displayed. In the face of these harsh construction conditions, the Hongkong-Zhuhai-Macao Bridge has adopted some targeted schemes, which provides a good reference model for the construction safety of other cross-sea projects.
36
Abdrashitova, R. N., A. A. Prudchenko, M. A. Kadyrov e M. G. Poluyanov. "Current hydrogeochemical profile of groundwater in the Middle Jurassic hydrogeological complex of the Lyaminsky oil and gas field". Oil and Gas Studies, n. 3 (14 luglio 2023): 11–23. http://dx.doi.org/10.31660/0445-0108-2023-3-11-23.
Abstract (sommario):
The aim of the study is to identify the influence of some parameters of the geological environment on the formation of the current hydrogeochemical profile in the Middle Jurassic hydrogeological complex (layers YU2-4) of the Lyaminsky oil and gas field in Western Siberia.The factors controlling the changes in the chemical composition of the groundwater (geotemperatures, influence of neotectonics, etc.) after the process of sedimentation and water accumulation were analysed on the basis of the lithogenetic theory of the transformation of the composition of groundwater during geological evolution. In the course of the research, correlation coefficients were obtained for the value of groundwater mineralisation in the complex with the modern and paleotemperatures of the Tyumen suite, the porosity coefficient and the depth of the foundation. The obtained results allowed assuming that the current hydrogeochemical profile of the Middle Jurassic hydrogeological complex is the result of the consistent action of the whole complex of factors. The results of the analysis showed that the influence of neotectonic processes on the current hydrogeochemical profile is quite probable. The reasons for the heterogeneity of mineralisation, apart from neotectonic processes, may be different, but in any case, the identification of relationships such as "Mineralisation - a parameter of the state of the geological environment" indicates a change in the concentration of salts in groundwater after their accumulation together with sediment.
37
AZIMOV, Oleksandr, Оleсsij ROGOZHIN e Oleksandr TROFYMCHUK. "A CONCEPTUAL APPROACH TO THE CREATION OF AN INFORMATION SUPPORT SYSTEM FOR THE WORKS RELATED TO THE MANAGEMENT OF THE GEOLOGICAL ENVIRONMENT IN THE CONTEXT OF THE LOCALIZATION OF MUNICIPAL SOLID WASTE". Visnyk of Taras Shevchenko National University of Kyiv. Geology, n. 3 (102) (2023): 94–101. http://dx.doi.org/10.17721/1728-2713.102.13.
Abstract (sommario):
The article considers the recent world approaches to municipal solid waste (MSW) management, describes two classes of the objects for their localization such as the unauthorized dumps and disposal landfills which play different functional roles in waste management. Together with the host and surrounding components of the environment the landfills and the dumps are represented as a special environmentaltechno(anthropo)genic system. Since the waste itself is deposited into the geological environment (GE), within the framework of this system in a whole, the technogenic-geological subsystem is considered, which can be represented by certain functional model or an infogeoframe for specified application (i.e. target-oriented). Conceptually, a methodical complex of information support is proposed for the researches and works on the management of GE, where MSW is located. This complex should include two blocks: a prognostic-retrospective-static model for the GE and an integrated ecological-geological model for the technogenic-geological object. Therefore, the main service tool of the information support for the MSW management of the objects of localization in the GE is a provision of the information-functional models for the certain infogeoframes. Completeness of these ecological-geological models is specified by the goals and problems of the management of reference class of the objects (an abstract infogeoframe). An illustration of the filling the information model by some data and its implementation into the Kyiv's Landfill area No 5 is present. The main directions of further research are outlined.
38
Mourtzas, N. D., e E. Sotiropoulos. "Palaeotectonic environment and landslide phenomena in the area of Malakasa, Greece." Bulletin of the Geological Society of Greece 47, n. 4 (5 settembre 2013): 1805. http://dx.doi.org/10.12681/bgsg.11060.
Abstract (sommario):
The extended landslide of Malakasa area, located 35km to the North of Athens, occurred in a neopalaeozoic schist-sandstone klippe, a complex Palaeotectonic environment in the northern roots of Parnitha Mt. Due to this failure, railway line and highway connection between Athens and central and North Greece were cut off. In this paper, it is attempted to approach the landslide mechanism based on: (i) the kinematic data on the failure surface, (ii) the morphological features of the surface, (iii) the movement vectors, and (iv) the lithostratigraphy and hydro-geological features of the sliding mass. According to the above criteria, three soil blocks can be identified in the landslide mass, which are differentiated by their lithological structure, kinematic features, type of deformation and hydro-geological behavior. The causal factor of the extended landslide was the gradual loss of support of these three blocks and their slide on a pre-sheared surface of low strength that has been caused by the extended excavation in the slope toe. The palaeotectonic structure and the development and geometry of the geological formations in the landslide area were not taken into account during the construction of the drainage works, for slope stabilization and the increasing of safety factor, something which led to the over-designing of the remedial measures.
39
Permana, Aang Panji, Subagyo Pramumijoyo e Sunarty Suly Eraku. "MICROFACIES AND DEPOSITIONAL ENVIRONMENT OF TERTIARY LIMESTONE, GORONTALO PROVINCE, INDONESIA". Series of Geology and Technical Sciences 2, n. 446 (15 aprile 2021): 15–21. http://dx.doi.org/10.32014/2021.2518-170x.29.
Abstract (sommario):
The research area is located in northern Limboto Lake in Gorontalo Province, which has complex geological characteristics. The geological complexities include stratigraphy and tectonics which influence the formation of the Limboto Basin. Limestone research in the Late Tertiary Limboto Basin is very intriguing to be done because of the lack of research in limestone. Gorontalo limestone outcrops, which become the focus of the research, have a total thickness of 30 meters. The research objective is to analyze facies, microfacies, and depositional environment of tertiary limestone. These two research objectives are attained by using two research methods, namely measurd section and petrography analysis. The research result exhibits that there are four Gorontalo limestones facies, including coralline rudstone intercalated with thin mudstone facies, sandy micrite intercession facies, coralline rudstone intercession facies and sandy allochem limestone intercession facies. According to the limestone micro- facies standard, the depositional environment of Gorontalo limestone is platform interior restricted (facies zone 8).
40
FEDOSEIENKOV, S. H., A. I. SHUNDEL, S. I. NEVIEROVA e L. V. NESTERENKO. "Modern hydroacoustic methods for studying the bottom relief and bottom sediments of the Dnieper River: ways of using it in the exploration and development of river sand deposits". Geology and Mineral Resources of World Ocean 18, n. 1 (2022): 22–29. http://dx.doi.org/10.15407/gpimo2022.01.022.
Abstract (sommario):
The difficult state of the economy of the state entailed a practical lack of funding for geological survey, prospecting work, a comprehensive geological study of the territory of Ukraine, natural and anthropogenic changes in the geological environment in the mode of its constant monitoring; the rates and volumes of reproduction of its own mineral resource base do not meet the needs of the country. Reforming the geological industry to ensure the effective functioning of institutions in the field of subsoil use and environmental protection is an extremely important task; proper provision of state control over subsoil use processes. The development of modern hydroacoustic methods for studying the bottom topography and bottom sediments of the Azov-Black Sea basin in order to search and assess the state of deposits of nonmetallic minerals, protect the environment will improve a specialized hydroacoustic complex (hydroacoustic tools, algorithms and software) for performing survey work, allowing the collection of ground maps and sections of bottom soil without taking samples, and to detect objects in the bottom layer of the water column.
41
Ivanik, O., L. Tustanovska e K. Hadiatska. "MAIN CAUSES OF GRAVITATION PROCESSES WITHIN THE MIDDLE DNIEPER REGION". Visnyk of Taras Shevchenko National University of Kyiv. Geology, n. 1 (88) (2020): 6–11. http://dx.doi.org/10.17721/1728-2713.88.01.
Abstract (sommario):
Integrated assessment and analyses of gravitational geological processes impact on the technogene objects is based on a systematic approach to the analysis of the geological environment; creation of geological, mathematical and spatial models of the geological environment, development of analytical tools. The complex application of geological and geomorphological methods (structural-morphometric analysis, comparative tectonics and structural analysis), remote sensing data and GIS technologies made it possible to identify the relationship between the processes of geomorphogenesis and tectogenesis within the Middle Dnieper area, identify the causes of gravitational geological processes, and build a series of spatial models. These models describe the impact of geomorphological and tectonic processes on the natural hazards. Based on the analysis of structural and morphometric indices, the tectonic structures, which are most elevated in relief, were recorded. Using the residual relief map, located above the baseline surfaces of the respective orders, structural zones are highlighted, reflecting the relationship of tectonic and erosion and reservoir erosion processes. Digital models of base surfaces and residual topography are aimed at the detection of local structures and the study of slope processes of the territory. Neotectonic movements of not only local but also regional character were allowed to follow. The residual relief outlines the positive forms of relief confined to anticlinal folds, which refer to the positive anomalies of gravity.
42
Wuttke, Frank, Petia Dineva e Ioanna-Kleoniki Fontara. "Influence of Poroelasticity on the 3D Seismic Response of Complex Geological Media". Journal of Theoretical and Applied Mechanics 47, n. 2 (27 giugno 2017): 34–60. http://dx.doi.org/10.1515/jtam-2017-0009.
Abstract (sommario):
AbstractElastic wave propagation in 3D poroelastic geological media with localized heterogeneities, such as an elastic inclusion and a canyon is investigated to visualize the modification of local site responses under consideration of water saturated geomaterial. The extended computational environment herein developed is a direct Boundary Integral Equation Method (BIEM), based on the frequency-dependent fundamental solution of the governing equation in poro-visco elastodynamics. Bardet’s model is introduced in the analysis as the computationally efficient viscoelastic isomorphism to Biot’s equations of dynamic poroelasticity, thus replacing the two-phase material by a complex valued single-phase one. The potential of Bardet’s analogue is illustrated for low frequency vibrations and all simulation results demonstrate the dependency of wave field developed along the free surface on the properties of the soil material.
43
Liu, Hongwei, e Bo Han. "Geo-Environment Suitability Evaluation for Urban Construction in Rongcheng District of Xiong’an New Area, China". Applied Sciences 13, n. 17 (4 settembre 2023): 9981. http://dx.doi.org/10.3390/app13179981.
Abstract (sommario):
Xiong’an New Area is a national event and a project planned for a millennium of China. Its high-quality construction is of great significance to easing the noncapital functions of Beijing and the coordinated development of the Beijing-Tianjin-Hebei region. As an emerging city, the development and construction of Xiong’an New Area is bound to be restricted by geological and resource conditions. Therefore, geo-environment suitability analysis is the necessary basis of urban development and construction. Geo-environment suitability analysis of urban construction is a complex process that requires various geological indicator information, and relevant expertise to analyze their relevance. This paper focuses on the analytic hierarchy process (AHP) for the assessment of geo-environment suitability for urban construction in Rongcheng district, which is a Start Construction Region in Xiong’an New Area. Multiple factors, including the characteristic value of bearing capacity of foundation soil, land subsidence rate, geological faults, ground fissures, potential liquefied sands, quality of groundwater chemistry, quality of soil chemistry, chemical corrosion of concrete by groundwater, chemical corrosion of steel by groundwater, and enrichment of deep groundwater and geothermal resource, were used for the suitability assessments. From the evaluation achievements, the high and very high suitable lands for urban construction, with an acreage percentage of 89.2%, were located in most parts of the study area. Meanwhile, for another 9.1% of the land, the impacts of geological faults, land subsidence, and potential liquefied sands needed to be noted preferentially for urban construction.
44
Kalashnyk, G. A. "INVESTIGATIONS OF GEOECOLOGICAL STATE IN SETTLEMENTS OF THE DNIPROPETROVSK REGION ADJACENT TO THE SHCHERBAKIVSKA BEAM". Мінеральні ресурси України, n. 4 (28 dicembre 2018): 3–7. http://dx.doi.org/10.31996/mru.2018.4.3-7.
Abstract (sommario):
The article presents the results of investigations of geoecological state of settlements of Kryvyi Rih district of Dnipropetrovsk region adjacent to the tailings dump of the SkhidHZK of the Shcherbakivska beam. The rational complex of geological and geophysical methods for assessing the geoecological state of technogenic-loaded areas near to the tailings dump is grounded, considering the peculiarities of the territory tectonic structure and possible geodynamic changes of the state of the geological environment. Recommendations for the complex of geological and geophysical methods for the effective solution of ecological monitoring problems with the purpose of possible changes of the geological environment under the influence of natural and man-made processes around the tailings dump of radioactive waste are developed. In the future in the settlements connected with the possible emergency ecological situation due to the proximity to the tailing dump the SkhidHZK the Shcherbakivska beam, it is necessary to take a number of measures directed at the constant conduct of round-the-clock geoecological monitoring and limitation of external and internal chronic exposure of the population. It is assumed that in case of deterioration of the environmental situation based on the results of round-the-clock monitoring research, it will allow to fulfil the timely receipt of information from the monitoring unit to the information user that is responsible for making of managerial decisions on protecting the population of settlements adjacent to the Shcherbakivska beam.
45
Zou, Yan Hong, Xian Cheng Mao e Wen Feng Xi. "Three-Dimensional Geological Modeling and Quantitative Analysis for Geological Ore-Controlling Factors in Fenghuangshan Copper Ore Field". Advanced Materials Research 524-527 (maggio 2012): 241–47. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.241.
Abstract (sommario):
Aiming at the issues for 3-dimensionals localization and quantitative prediction of concealed ore body in the deep and margin parts of the Fenghuangshan ore field in Tongling, Anhui, a quantitative analysis method for geological ore-controlling factors is proposed. Firstly, based on the analysis of metallogenic conditions and integrated geological exploration data, the three-dimensional shapes of the ore-controlling geological bodies such as strata, structures, magmatic bodies and ore bodies were inferred and simulated in three-dimensional visualization environment by dint of three-dimensional geological modeling technology. Secondly, from the three-dimensional grid geological models, some 3-dimensional shapes of some complex ore-controlling geological bodies with overlay surfaces, were analyzed by morphological operations and extracted as the geological ore-controlling factors. Lastly, the field models of various geological ore-controlling factors, including the magmatic body and its surface relief, the contact zone, the strata, the faults and so on, were set up to describe quantitatively geological ore-controlling effects. By analyzing quantitatively the associated relationship between the geological ore-controlling factors and the mineralization distribution, It is proved that the extracted geological ore-controlling factors have more powerful controlling effects on mineralization spatial distribution. The method is feasible to gain the quantitative geological ore-controlling indexes for indicating the ore-formation advantage degree.
46
Bruchev, Ilia, Georgi Frangov, Radoslav Varbanov e Plamen Ivanov. "Geological hazards in the western periphery of the Rhodope Region". Geologica Balcanica 31, n. 1-2 (30 giugno 2001): 67–79. http://dx.doi.org/10.52321/geolbalc.31.1-2.67.
Abstract (sommario):
The destructive geological processes in the Rhodopes region are typical for the territory of complex tectonic structure - horsts, grabens, fault zones, active neotectonic movements, mountainous relief and diverse engineering-geological conditions. The dominating role in the structure of the geological hazards belongs to the earthquakes, the slope processes (landslides, rock falls, screes, avalanches, creep) and to groups of phenomena related with urbanization, mine workings, hydrotechnical constructions. These are artificially provoked landslides in coal basins, dangerous gases in underground mines, rock shocks and sudden water currents in tunnels, pollution of water and soil by industrial waste, tailing ponds and dump-hills. All these numerous natural and manmade processes exert negative impact on the population, infrastructure and the environment, hampering the sustainable development of the area. Prevention and protection measures are necessary for decreasing the consequences of the geological hazards.
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Khrushchov, D., S. Chumachenko, V. Zatserkovnyi, P. Trofymenko e А. Splodytel. "CONCEPTUAL FRAMEWORK FOR INFOGEOLOGICAL MODELING OF MILITARY ACTIVITY TERRITORIES". Visnyk of Taras Shevchenko National University of Kyiv. Geology, n. 1(96) (2022): 83–93. http://dx.doi.org/10.17721/1728-2713.96.12.
Abstract (sommario):
The purpose of the study is to elaborate framework of infogeological modeling of the military activity territories (using territorial objects in Ukraine) to provide informational support of research and works on the treatment of the geological environment of territories of military activity. The main methodological instrument of informational support of research and works on the treatment of the geological environment of territories of military activity is information modeling. Given the local level of military activity territories, the complex ecological and geological model serves as the primary methodological technique. Methods developed on this paradigm's principles aim to eliminate the consequences of military activity and restore the territories of the military conflicts. Ground research was developed using conceptual models, particularly checking main components of these models that aim at determining the indetermination. To identify the influence of the military activity sources, we used the Leopold Matrix and Sorensen Level Diagram, network diagram, method of the combined analysis of maps, and factor analysis. The evaluation of the spread of factors of military and technogenic load of chemical origin in the functional zones and subzones of the military polygon was carried out based on the complex approach to the ecological evaluation of the contamination of the territories of intensive military and technogenic load using the landscape profiling and imitating modeling taking into account geochemical and hydrometeorological conditions. The analysis of the soils, contaminated with military and technogenic origin substances in the places of functional subzones locations targeted fields of military polygon showed the indicators of concentration of some of the contaminating substances exceed norms 5-20 times. Field research in military polygon showed that contamination of its territory has zonal character and is grouped around local subzones of the military object where military preparation using armaments and military equipment is carried out, being the primary source of factors of military and technogenic load of the geological environment. Prospects for further development of this field lie in developing the integral theory of infogeological modeling of geological environment of military activity territories, oriented at the evaluation of different types of influences and threats.
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Panina, Elena V., Svetlana V. Lagutina, Vladimir F. Grishkevich e Evgenia A. Arzhilovskaya. "Detailed geological models of V. N. Vinogradov oil field productive reservoirs". Oil and Gas Studies, n. 3 (10 luglio 2019): 22–29. http://dx.doi.org/10.31660/0445-0108-2019-3-22-29.
Abstract (sommario):
The article is devoted to the issue of geological modelling. The sedimentational environment of Tyumenand Frolov suites productive deposits is reconstructed using complex regional analysis of seismic and well data. Detailed facial models are built for UKand AS3 reservoir group. Concordant structural model, reservoir properties mapping, saturation recognition, oil-water contacts estimation, and pool contouring are made for oil initial resources evaluation.
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Wang, Shuilin, SongYong Liu e Fanping Meng. "Fault diagnosis mechanism of gears and bearings for coal mining equipment in a complex geological environment". Earth Sciences Research Journal 25, n. 1 (16 aprile 2021): 115–22. http://dx.doi.org/10.15446/esrj.v25n1.93184.
Abstract (sommario):
The traditional research method of fault diagnosis mechanism has poor stability, which leads to the difference of fault diagnosis and location results. Therefore, under the complex geological environment, a new research method of fault diagnosis mechanism of gear and bearing for coal mining equipment is proposed. This method calculates gears and bearings’ yield strength by analyzing coal mining equipment’s bearing capacity elasticity. According to the fitting degree, the equipment sample’s projection space is confirmed, the fault features of gear and bearing are extracted by segmentation algorithm, the optimal fitness is set by positioning algorithm, the location of fault center is obtained, and the fault mechanism diagnosis is studied. Experimental results show that compared with the traditional method, the proposed method is more stable, and the difference in fault diagnosis results is minimal. It can be seen that this method is more suitable for fault diagnosis of coal mining equipment.
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Liu, Kuiming, Hui Li, Shihui Pang, Meng Mi, Jianping Chen e Kui Sun. "Numerical Simulation Analysis of Slope Instability and Failure of Limestone Mine in Weibei". Advances in Civil Engineering 2021 (21 ottobre 2021): 1–14. http://dx.doi.org/10.1155/2021/5991348.
Abstract (sommario):
Weibei area is the largest limestone resource area in Shaanxi Province, which is an important boundary to distinguish the climate difference between the south and the north of China, and also a significant ecological safety protection barrier in the northwest of China. The complex geological environment and harsh environment make the mining area have serious geological disaster hidden danger. Based on the site engineering geological data of typical limestone quarry slope in Weibei, this paper constructs a three-dimensional geological model, uses FLAC3D software to simulate excavation, and analyzes the stress and strain law of the quarry slope. SlopeLE software was used to analyze the safety factor of slope stability and the potential slip surface before and after taking reinforcement measures. The results show the following: (1) Limestone is the main rock component of the mine, followed by mudstone. The joint and fissure are developed, the rock mass is broken, and the hidden danger of engineering geological disaster is high. (2) There is a sliding trend in both sides during excavation, and the maximum vertical displacement is 2.1 cm. (3) If the slope is reinforced according to the design scheme, the slope stability safety factor will be increased from 1.062 to 1.203 in a stable state, which greatly improves the stability of the slope and provides a guarantee for human and financial resources.