An Approach To The Mesostructure Sealing In Coal By Mine Water Clathrate,
2025
Missouri University of Science and Technology
An Approach To The Mesostructure Sealing In Coal By Mine Water Clathrate, Haiyang Yi, Ze Li, Tao Yang, Zhuang Zhuo, Tingxiang Chu, Xianfeng Shi, Guang Xu
Mining Engineering Faculty Research & Creative Works
The sealing performance of coal mass is of significant importance for converting abandoned mines into geological repository. This study presents a novel approach to enhancing the sealing of the pore structure in coal seams, such a technique utilizes mined water as the primary substance and additive solution based crystalline. Sequent tests are implemented, including saturation test, ion chromatography test, permeability test and scanning electronic microscope observations. It was suggested that the produced crystalline decrease the porosity and permeability of the coal, with different crystal morphologies due to various ions of additive solutions. The produced rod-shaped crystals have the most remarkable …
Green Energy Production Using A Hydro-Generator In An Underground Mine Water Pumping Station – Case Study,
2025
Spółka Restrukturyzacji Kopalń S.A. (Mine Restructuring Company), Strzelców Bytomskich 207, 41-914, Bytom, Poland
Green Energy Production Using A Hydro-Generator In An Underground Mine Water Pumping Station – Case Study, Andrzej Chmiela, Beata Barszczowska, Eugeniusz Krause, Arkadiusz Kulawik, Adam Smolinski
Journal of Sustainable Mining
The paper analyses the experience of almost one year of production of “green” electricity by a hydro-generator using a constant water drop in the pits of mine water pumping stations. The main technical, economic and environmental parameters obtained by the applied technical and organisational system are presented. Equipping the mine water pumping station with a hydro-generator proved to be a good investment. The investment offers a relatively low risk with a relatively low initial outlay and a relatively short payback period of about 4 years. The innovative use of typical but modern elements in an atypical operating environment has not …
Machine Learning Techniques For Optimizing The Efficiency And Costs Of Drill Steel In Sandstone And Granodiorite: A Case Study In Peru,
2025
National University of Trujillo, Department of Mining Engineering, Peru
Machine Learning Techniques For Optimizing The Efficiency And Costs Of Drill Steel In Sandstone And Granodiorite: A Case Study In Peru, Marco Cotrina, Jairo Marquina, Jose Mamani, Solio Arango, Eusebio Antonio, Eduardo Noriega, Teofilo Donaires, Dominga Cano
Journal of Sustainable Mining
This research aims to optimize the efficiency and costs of drilling steel in sandstone and granodiorite rocks using machine learning techniques in a Peruvian mine. Predictive models, including random forest (RF), XGBoost (XGB), decision trees (DT), and artificial neural networks (ANN), were applied, along with optimization algorithms such as genetic algorithm (GA), particle swarm optimization (PSO), ant colony optimization (ACO), and simulated annealing (SA). A dataset of 705 entries was analyzed, focusing on drill bit wear, percussion and rotation pressures, and cost per meter drilled. Model performance was evaluated using R2, RMSE, MAE, and MAPE. The ANN model …
Assessing The Living Conditions Of Mining-Induced Resettled Persons: The Case Of Ahafo South Resettlement Communities, Ghana,
2025
Kwame Nkrumah University of Science and Technology, Department of Land Economy, Ghana
Assessing The Living Conditions Of Mining-Induced Resettled Persons: The Case Of Ahafo South Resettlement Communities, Ghana, Jonathan Zinzi Ayitey, Mustapha Okyere, Frank Gyamfi-Yeboah
Journal of Sustainable Mining
This study examines the living conditions of mining-affected persons in the Ahafo South Mining Communities in Ghana using Cernea’s Impoverishment Risks and Reconstruction (IRR) model. Employing a case study design, data for the study was obtained through a combination of semi-structured interviews and close-ended questionnaires administered to ninety (90) respondents in the Ntotroso and OLA resettlement communities in the Asutifi North District, Ghana. The results show a complex mix of outcomes of mining-induced displacement and resettlement of the resettled population. While an analysis of resettlement impacts found a high level of satisfaction among the resettled population with housing provision, road …
Damage Assessment In The Case Of Post-Mining-Induced Seismicity: How To Use And Adapt Macroseismic Intensity Scales?,
2025
Risks and Prevention Division, BRGM, Orléans, France
Damage Assessment In The Case Of Post-Mining-Induced Seismicity: How To Use And Adapt Macroseismic Intensity Scales?, Johanna Vieille, Caterina Negulescu, Pierre Gehl, Pascal Dominique, Romain Guidez, Grzegorz Mutke
Journal of Sustainable Mining
Following coal mine closures, the impact of flooding on underground mining excavations and on the geomechanical stability of the rock mass has the potential to trigger superficial earthquakes. The generated vibrations may induce damages to the surface infrastructures. Therefore, they represent a significant source of concern for the population. Nowadays, seismic risk assessment procedures in Europe usually build upon the EMS-98, which has been developed for natural tectonic earthquakes. This study aims to investigate the applicability of EMS-98 to seismic events induced by post-mining context while comparing it to a new intensity scale MSIIS-22 adapted to very low intensities from …
Rockfill Trenching For Enhancing Overburden Dump Height On Weak Soil Strata,
2025
Civil Department, Visvesvaraya National Institute of Technology, Nagpur 440010, Maharashtra, India
Rockfill Trenching For Enhancing Overburden Dump Height On Weak Soil Strata, Rahul Shende, Srinivasan Venkatraman, K. Athiveera Pandian, Shubham Jain, Anjan Patel
Journal of Sustainable Mining
Dumping waste on weak soil layers can destabilize the dump, compromising its capacity for material disposal. This study focuses on the stability of dumps placed over weak black cotton (BC) soil strata in central India, with an emphasis on assessing the effectiveness of rockfill trenches (RFT) in improving dump stability. A combined approach using nine limit equilibrium methods (LEM) and the finite element method (FEM) was employed for analysis. The results demonstrate that dump stability is significantly influenced by the presence of weak strata under both dry and wet conditions when the dumping height is increased. The study also reveals …
Exploring The Interactions Between Mining And Climate Change: A Bibliometric Analysis,
2025
Institute of Technical Education and Research (ITER), Siksha 'O' Anusandhan Deemed to be University, Odisha, India
Exploring The Interactions Between Mining And Climate Change: A Bibliometric Analysis, Artatrana Mishra, Sarat Chandra Sahu, Manish Yadav, Nitin Kumar Singh
Journal of Sustainable Mining
The increasing demand for minerals has placed huge pressure on the mining industry to increase production, which consequently affects the environment, and, thus, contributes to climate change. Coal extraction has been reported to be a major contributor to global CO2 emissions, mainly due to the burning of fossil fuels. As a consequence, the frequency and severity of extreme climatic events have also increased throughout the world. Mining is essential for the development of society but contributes to climate change. On the contrary, extreme weather events and rising temperatures associated with climate change affect the overall productivity of mining companies. …
Evaluation Of Cyanide Removal Processes On Water Effluents From Gold Ore Processing And Industrial Scale Up,
2025
Universidade Federal de São João Del-Rei, Departamento de Engenharia Química, Brazil
Evaluation Of Cyanide Removal Processes On Water Effluents From Gold Ore Processing And Industrial Scale Up, Juliana Freitas, Jorge Bellido
Journal of Sustainable Mining
Gold extraction goes through different steps, from research to physical-chemical processing, which uses chemical reagents for extraction, such as cyanide. In literature, there are presented many ways to remove cyanide from this effluent on a bench scale, although on an industry scale it is not very often analysed. In this study, seeking innovation on an industrial scale for cyanide removal from real effluent generated by gold processing was analysed through oxidation with H2O2 and Fenton process. It was proven that these processes can remove cyanide at the levels required for recirculation of the effluent in the process, …
Prediction Of Blast-Induced Ground Vibrations In Limestone Mine Using Multiple Linear Regression (Mlr) Analysis,
2025
Department of Mining Engineering, National Institute of Technology, Srinivasnagar Surathkal, Mangalore, Karnataka, India
Prediction Of Blast-Induced Ground Vibrations In Limestone Mine Using Multiple Linear Regression (Mlr) Analysis, Appani Ravikumar, Harsha Vardhan, K V Subrahmanyam Sarma
Journal of Sustainable Mining
Open cast mining comprises a series of activities, including rotary cum percussive drilling, blasting, loading, and dumping. The excavation of overburden (OB) and minerals is carried out by employing the blasting process. The adverse effects linked to the practice of blasting include the generation of ground vibrations, the occurrence of fly rock, and the production of air-over pressure. Among the undesirable outcomes, ground vibrations are a significant concern for mining and environmental engineers. Typically, the estimation of ground vibrations caused by blasts in open-cast mines is accomplished using conventional regression analysis techniques. The independent variable included in the regression analysis …
Advances In Research On Noble Gas As Tracers Of Geofluids And Helium Enrichment,
2025
Institute of Energy, Peking University, Beijing 100871, China
Advances In Research On Noble Gas As Tracers Of Geofluids And Helium Enrichment, Gao Yu, Liu Quanyou, Zhu Dongya, Wu Xiaoqi, Li Pengpeng
Coal Geology & Exploration
Background Noble gases emerge as significant tools for tracing the sources and evolutionary processes of geofluids due to their chemical inertness and different isotopic compositions across varying reservoirs. Helium serves as a noble gas tracer and a scarce resource, and its enrichment mechanisms and exploration potential have attracted wide attention.Methods Based on a summary of the geochemical data of typical gas reservoirs, volcanic gases, and surface hot springs at home and abroad, this study analyzed the interfering factors and end-member value screening in the source apportionment of noble gases. Furthermore, it summarized the applications of noble gas isotopes in …
Current Status And Future Trends Of Seismic Prediction And Assessment Technology For Coalbed Methane Reservoirs,
2025
School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
Current Status And Future Trends Of Seismic Prediction And Assessment Technology For Coalbed Methane Reservoirs, Wu Haibo, Zhang Pingsong, Xu Shi’Ang, Huang Yaping, Dong Shouhua, Cheng Yan, Li Donghui, Zhang Sheng, Zhang Min
Coal Geology & Exploration
Background The seismic prediction and assessment technology for coalbed methane (CBM) reservoirs has undergone rapid development for over three decades, playing an indispensable role in CBM exploration. Methods This study reviews the development history and current status of core technologies within the seismic prediction and assessment technical system for CBM reservoirs, including seismic-petrophysical tests, modeling and inversion, seismic wavefield simulation, seismic amplitude versus offset (AVO) inversion and seismic attribute inversion, and integrated seismic prediction of the sweet spot areas of CBM reservoir resources and engineering. Furthermore, this study delves into the impacts and limitations of the characteristics of CBM reservoirs, …
Geochemical Nature Of The Geothermal Water From Lanzhou Basin: Implications For The Genesis Of Shallow Helium-Bearing Fluids,
2025
College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an 710065, China; School of Earth and Space Sciences, Peking University, Beijing 100871, China
Geochemical Nature Of The Geothermal Water From Lanzhou Basin: Implications For The Genesis Of Shallow Helium-Bearing Fluids, Tang Jianzhou, Wang Shuangming, Zhang Zhicheng, Li Ke, Li Changpeng
Coal Geology & Exploration
Objective and Methods Investigations on the geochemical nature of geothermal water are vital to the comprehension of the origin of helium-rich fluids in shallow basins. To address this issue, this paper reports the results of the chemical analysis, H-O isotopes and 14C ages from geothermal water and soluble gas components from the well BY-1 in Lanzhou Basin, northeastern margin of Qinghai Tibet Plateau. Chemical analysis of geothermal water samples reveals that the chemical type of geothermal water is NaCl. The show δD value of –78‰, high δ18O value (–8.7‰), low 3H value (<0.4TU), and old 14C …
Impacts Of Metakaolin And Fly Ash On The Performance Of Cement-Based Grouting Materials In Anchoring Engineering,
2025
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China
Impacts Of Metakaolin And Fly Ash On The Performance Of Cement-Based Grouting Materials In Anchoring Engineering, Cheng Zhiyuan, Yang Junpeng, Xue Wei, Wei Daidong, Wang Yimin
Coal Geology & Exploration
Objective The filling of grouting materials plays a significant role in ensuring the performance of anchoring structures. This study aims to further enhance the fluidity of grouting materials, reduce their dry shrinkage in the curing process, and ensure complete filling. This will help improve the bonding property between the anchoring body and the rock and soil mass to be reinforced. Methods Using cement as the primary material, as well as fly ash and metakaolin as admixtures, this study designed and prepared 20 groups of binary and ternary mixtures and one control group. Through tests of the fluidity, bleeding ratios, and …
Diffusion Mechanisms Of Coal-Measure Helium And Their Implications For Helium Accumulation: A Case Study Of The Taiyuan Formation, Northern Qinshui Basin, China,
2025
State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China
Diffusion Mechanisms Of Coal-Measure Helium And Their Implications For Helium Accumulation: A Case Study Of The Taiyuan Formation, Northern Qinshui Basin, China, Ma Yong, Xin Zhiyuan, Chen Jianfa, Li Yuhong, Zhang Xiutao, Jiang Haojie, Chen Zeya
Coal Geology & Exploration
Objective The global helium-rich gas reservoirs are dominated by conventional natural gas reservoirs. In recent years, helium-bearing natural gas has been discovered in the Carboniferous-Permian coal measures in the Ordos Basin and surrounding regions, revealing the resource potential of coal-measure helium. However, there is almost a total lack of studies on mechanisms underlying the diffusion and migration of coal-measure helium. This severely restricts further research on the accumulation patterns of coal-measure helium.Methods This study investigated a coal seam in the Taiyuan Formation in the northern Qinshui Basin and mudstones in the coal seam roof. Using physical diffusion experiments on …
Table Of Contents,
2025
China Coal Technology and Engineering Group (CCTEG)
Construction And Application Of A Tcn-Lstm-Svm-Based Time Series Prediction Model For Water Inflow In Coal Seam Roofs,
2025
China Coal Research Institute, Beijing 100013, China; CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; State Key Laboratory of Coal Mine Disaster Prevention and Control, Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Construction And Application Of A Tcn-Lstm-Svm-Based Time Series Prediction Model For Water Inflow In Coal Seam Roofs, Liu Xuan, Ji Yadong, Zhu Kaipeng, Zhao Chunhu, Li Kai, Li Chaofeng, Yuan Chenhan, Li Panpan, Yan Pengzhen
Coal Geology & Exploration
Background The accurate prediction of mine water inflow plays a significant role in the prevention and control of water hazards and the safe and efficient production in coal mines. Methods To construct a prediction model of water inflow in mines under threat of water hazards from extremely thick sandstones aquifer in West China, this study investigated a typical mine (also referred to as the studied mine) severely affected by such water hazards in the Binchang mining area of Shaanxi Province. The correlation between the mining footage and water inflow of the mining face was selected as the characteristic variable for …
Technical Advances And Research Directions Of Borehole Geophysical Prospecting For Coal Mines,
2025
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China; State Key Laboratory of Intelligent Coal Mining and Strata Control, Beijing 100013, China
Technical Advances And Research Directions Of Borehole Geophysical Prospecting For Coal Mines, Cheng Jianyuan, Yan Yu, Li Yuteng, Wang Pan, Zhao Rui, Jiang Bici
Coal Geology & Exploration
Background High-precision and long-distance exploration of geological conditions is required for coal extraction and disaster prevention in coal mines. However, traditional drilling and geophysical prospecting methods face technical bottlenecks such as insufficient exploration accuracy and limited exploration ranges. Borehole geophysical prospecting technology integrates the reliable and straightforward axial results of drilling with the high-resolution transverse results of geophysical prospecting, providing technical support for safe, efficient, and intelligent coal mining. Based on the construction spaces, this study categorizes borehole geophysical prospecting technology into four types: i.e., intra-borehole, inter-borehole, borehole-surface, and borehole-roadway. Furthermore, it presents the primary advances and applicable conditions of …
Implications Of Helium Accumulation Models In Helium-Rich Basins In China For The Enrichment And Exploration Of Helium In Coal Measures,
2025
School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, China
Implications Of Helium Accumulation Models In Helium-Rich Basins In China For The Enrichment And Exploration Of Helium In Coal Measures, Li Yunbo, Wang Chengtao, Song Dangyu, Shi Xiaowei, Wang Rongqi
Coal Geology & Exploration
Background Helium is a strategic resource in serious short supply in China, and intensifying its exploration is crucial to national resource security. China enjoys abundant coal measure gas and significant potential for associated helium accumulation. However, relevant research remains in its infancy. Methods Based on a summary and analysis of helium generation, migration, and accumulation theories in natural gas reservoirs, this study systematically investigated the enrichment patterns of helium in coal measures and proposed exploration targets. Results and Conclusions The insights reveal that the helium resources in China exhibit a distribution pattern of zoning in both north-south and east-west directions. …
Mechanisms Underlying Differential Helium Enrichment In Shale Gas Of Varying Structural Styles In The Southeastern Sichuan Basin,
2025
State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China; College of Geosciences, China University of Petroleum
Mechanisms Underlying Differential Helium Enrichment In Shale Gas Of Varying Structural Styles In The Southeastern Sichuan Basin, Xin Zhiyuan, Chen Jianfa, Wang Jie, Ma Yong
Coal Geology & Exploration
Objective Shale gas reservoirs hold considerable helium reserves despite relatively low helium abundance, establishing them as a critical replacement for helium production growth. The southeastern Sichuan Basin exhibits diverse structural styles with varying preservation conditions, leading to an unclear understanding of the distribution characteristics and enrichment patterns of helium in shale gas. Determining the mechanisms behind the differential helium enrichment in shale gas is significant for the effective utilization of helium in shale gas.Methods Focusing on the typical shale gas reservoirs of different structural styles in the southeastern Sichuan Basin, this study explored the mechanisms underlying differential helium accumulation …
Physical Simulation Experiments On Competitive Dissolution Of Helium In Helium-Containing To Helium-Rich Gas Reservoirs,
2025
Hainan Institute of China University of Petroleum (Beijing), Sanya 572025, China; College of Geoscience, China University of Petroleum (Beijing), Beijing 102249, China
Physical Simulation Experiments On Competitive Dissolution Of Helium In Helium-Containing To Helium-Rich Gas Reservoirs, Zou Yi, Luo Qingyong, Chen Jianfa, Zou Huayao, Du Tao, Liu Xiaoqiang, Cai Xinyong, Yu Chengming, Fang Zilong
Coal Geology & Exploration
Background and Purpose Helium is widely applied in high-tech and scientific research fields due to its unique physicochemical properties. Formation water plays a key role in helium migration and enrichment. Typically, in the form of dissolved gas, helium is transported in pores or fractures by formation water. When helium-rich fluids migrate to shallow natural gas reservoirs, helium will experience dissolution and desorption exchange with other gases. This process is affected by formation temperature, pressure, and water salinity, as well as the competitive dissolution between helium and other gases. However, there is a lack of studies on the mechanisms underlying the …
