Trace Element Migration In Groundwater In Sandstone Aquifers In The Jurassic Coalfields: A Case Study Of The Guojiahe Coal Mine,
2025
College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Trace Element Migration In Groundwater In Sandstone Aquifers In The Jurassic Coalfields: A Case Study Of The Guojiahe Coal Mine, Shi Longqing, Qu Xingyue, Cheng Hao
Coal Geology & Exploration
Background The Ordos Basin, a vital energy hub in China, contains considerable coal reserves. However, the environmental issues arising from coal mining warrant attention, especially given the fragile ecosystems of the Jurassic coalfields. Methods This study investigated the Guojiahe Coal Mine in Shaanxi Province. Based on measured concentrations of 31 trace elements dissolved in sandstone aquifers across varying geological ages, this study conducted a comparative analysis of the evolutionary characteristics of these trace elements between unmined reducing and post-mining oxidizing conditions using numerical simulations. Accordingly, it revealed the impacts of coal seam mining on trace element migration in groundwater in …
Seismic Anisotropy Of Sandstone Aquifers In Coal Seam Roofs,
2025
School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
Seismic Anisotropy Of Sandstone Aquifers In Coal Seam Roofs, Yu Hang, Chen Tongjun
Coal Geology & Exploration
Objective The identification and assessment of sandstone aquifers in coal seam roofs play a vital role in the safe mining of mines. Investigating the rock physics and amplitude variation with incidence and azimuth (AVAz) responses of these sandstone aquifers is critical to the prevention and control of water hazards in mines. Methods By integrating rock physical models Voigt-Reuss-Hill (VRH), differential equivalent medium (DEM), Hudson, and Wood, as well as Gassmann’s anisotropic fluid substitution theory, this study proposed a rock physics modeling method for fractured sandstones of the horizontal transversely isotropic (HTI) media type (hereafter referred to as HTI sandstones). Using …
Research On Monitoring And Early Warning Systems For Mine Water: Progress And Prospects,
2025
College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, China
Research On Monitoring And Early Warning Systems For Mine Water: Progress And Prospects, Yin Shangxian, Ding Yingying, Lian Huiqing, Dong Donglin, Du Tong, Yin Huichao, Zhao Peng, Zhang Yi’An, Wang Xiong
Coal Geology & Exploration
Background Water disasters in mines are occasional accidents occurring due to the influence or triggered by mining-induced intense changes in geological bodies. The complexity, heterogeneity, and dynamics of geological bodies, coupled with the random and instantaneous nature of mining influence, lead to the uncertainty, instability, occasionality, and transience of water disasters in mines. Given that mine water monitoring and early warning serve as a prerequisite for advanced disaster prevention and control, their research and system construction hold great theoretical significance and practical value. Progress and Prospects Fighting against water disasters in mines is conducted throughout the development and utilization of …
Experiments On The Diffusion Patterns Of Coal Gangue-Based Grout In Goaves Under Varying Rock Particle Sizes And Grout Mass Fractions,
2025
Inner Mongolia Research Institute, China University of Mining and Technology (Beijing), Ordos 017000, China; National Engineering Research Center of Coal Mine Water Hazard Controlling, China; University of Mining and Technology (Beijing), Beijing 100083, China; Key Laboratory of Mine Water Control and Resources Utilization, National Mine Safety Administration, Beijing 100083, China
Experiments On The Diffusion Patterns Of Coal Gangue-Based Grout In Goaves Under Varying Rock Particle Sizes And Grout Mass Fractions, Zeng Yifan, Yuan Zilong, Li Hao, Wu Qiang, Zhao Gangyi, Zhou Anqi, Gao Xiang, Zhang Shuai, Bai Yanfei, Liang Jin, Yang Huxiong, Sheng Xinli, Yang Donghui, Zhao Yixia
Coal Geology & Exploration
Objective Investigating grout diffusion patterns and predicting the grouting range hold great significance for coal gangue grouting and filling engineering in goaves. Specifically, they are significant for designing grouting hole and row spacing, guiding grouting construction, determining the grouting filling degree, and further ensuring grouting effects. Methods Using crushed rocks as the medium to be grouted and coal gangue-based grout as the grouting materials, this study conducted grouting experiments under different particle sizes of crushed rocks and varying mass fractions of grout. Accordingly, it investigated the flow patterns of gangue-based grout in goaves. Results and Discussion Under a mass fraction …
Differential Roof Water Hazards And Comprehensive Utilization Of Mine Water In The Dongsheng Coalfield,
2025
China Coal Energy Research Institute Co., Ltd., Xi’an 710054, China; China Coal Rock Burst & Water Hazard Control Center, Ordos 017200, China
Differential Roof Water Hazards And Comprehensive Utilization Of Mine Water In The Dongsheng Coalfield, Huang Haiyu, Ding Xiang, Liu Xi, Fan Jiangwei, Ji Zhuochen, Li Zhaoyang
Coal Geology & Exploration
Objective The Dongsheng coalfield exhibits various types of mine water hazards, complex water filling mechanisms, and high water inflow with high total dissolved solids (TDS) content in mining areas. These characteristics pose challenges to the comprehensive utilization of mine water, severely restricting the safe, green, and efficient coal mining in the coalfield. Methods This study aims to reveal the roof water filling characteristics of the Dongsheng coalfield and enhance the comprehensive utilization of mine water. Using methods including statistical analysis of drilling data, analytic hierarchy process, and hydrochemical tests, this study analyzed the strata, spatial distribution of aquifers, and the …
Mechanisms Behind Grouting Pressure Jumping In Low-Permeability Limestones And Techniques For Grouting Pressure Control,
2025
CCTEG Coal Mining Research Institute, Beijing 100013, China; Coal Mining and Designing Department, Tiandi Science and Technology Co., Ltd., Beijing 100013, China; Coal Mining and Designing Branch, China Coal Research Institute, Beijing 100013, China
Mechanisms Behind Grouting Pressure Jumping In Low-Permeability Limestones And Techniques For Grouting Pressure Control, Fan Zhenli, Cao Lutong, Cui Yong, Zhang Zhiwei, Zhang Fengda
Coal Geology & Exploration
Background The exploitation of the Carboniferous-Permian coalfields in China is gradually transitioning toward coal seams in lower formations. In this context, issues including the confined water hazards in the floor and karst water preservation become increasingly pronounced. During the advanced surface treatment of karst water hazards in coal seam floors, the unclear patterns of matching between grout selection and grouting pressure control lead to empirical parameter selection, thereby yielding poor performance of grouting reinforcement. Methods This study aims to deal with the phenomena of rapid pressure rise with a limited grout volume in the low-permeability argillaceous limestones within the top …
Suitability Evaluation For Deep Geological Storage Of Mine Water In The Ordos Basin,
2025
School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China; Key Laboratory of Xinjiang Coal Resources Green Mining, Ministry of Education, Xinjiang Institute of Engineering, Urumqi 830023, China
Suitability Evaluation For Deep Geological Storage Of Mine Water In The Ordos Basin, Gulbostan Tursun, Sui Wanghua, Aibibai Mamat, Yang Weifeng, Chen Ge, Gao Liang
Coal Geology & Exploration
Objective Given the issues of large mine water drainage in coal mines in China, as well as the corresponding high treatment cost and low utilization rate, thoroughly investigating efficient, environmentally friendly, economically feasible mine water treatment technologies is the key to the green transformation and the implementation of the sustainable development strategy in the coal industry. Deep geological storage of mine water represents an emerging technology for mine water treatment, enjoying the advantages of low cost and zero emissions. A key step in the application of this technology is to select suitable target reservoirs. Although relevant studies have proposed some …
Advances In Key Technologies For The Management, Restoration, Development, And Utilization Of Coal Mining Subsidence Areas,
2025
CCTEG Ecological Environment Technology Co., Ltd., Beijing 100013, China
Advances In Key Technologies For The Management, Restoration, Development, And Utilization Of Coal Mining Subsidence Areas, Meng Zhuanghan, Wang Yutao, Tian Yanzhe
Coal Geology & Exploration
Background Coal mining subsidence areas, formed by the exploitation of coal resources, have emerged as severe challenges to the construction of ecological civilization and the sustainable development of the social economy in China. Their management, restoration, development, and utilization play a significant role in ecological security, food security, and energy transformation. Methods This study aims to address the unresolved and emerging issues in the management of coal mining subsidence areas. Based on the core concepts of management, restoration, development, and utilization, this study developed a dual-level zoning basis system combining theories and reality. Accordingly, coal mining subsidence areas in China …
The Impact Of Clean Energy Technology Incentives On Mineral Demand: An Economic Framework For Measuring Response,
2025
Missouri University of Science and Technology
The Impact Of Clean Energy Technology Incentives On Mineral Demand: An Economic Framework For Measuring Response, Hamdiya Orleans-Boham, Mahelet G. Fikru, Kwame Awuah-Offei
Economics Faculty Research & Creative Works
The existing literature establishes the link between clean energy technology (CET) expansion and rising mineral demand but lacks a comprehensive analysis of the transmission mechanisms through which CET policy incentives particularly production and consumption subsidies affect mineral markets. This study addresses the gap by developing an economic model where a CET producer optimally determines mineral input demand and production volume, where the concept of elasticity is used to measure the response of mineral demand to policy incentives. Analytical results demonstrate that the elasticity of mineral demand with respect to CET policies is highly sensitive to returns to scale of CET …
The Relative Importance Of Wind And Hydroclimate Drivers In Modulating Wind-Blown Dust Emissions In Earth System Models,
2025
Michigan Technological University
The Relative Importance Of Wind And Hydroclimate Drivers In Modulating Wind-Blown Dust Emissions In Earth System Models, Xinzhu Li, Longlei Li, Yan Feng, Xin Xi
Michigan Tech Publications
Windblown dust emissions are subject to large uncertainties in Earth system models (ESMs), yet model discrepancies in dust variability and its physical drivers remain poorly understood. This study evaluates the consistency of 21 ESMs in simulating the climatological distribution and interannual variability of global dust emissions and applies dominance analysis to quantify the relative influence of near-surface wind speed and five hydroclimate variables (precipitation, soil moisture, specific humidity, air temperature, leaf area index) across different climate zones. In hyperarid regions, the models exhibit poor agreement in dust variability, with only 10 % of pairwise comparisons showing significant positive correlations. Most …
Analysis Of A Saline Dust Storm From The Aralkum Desert - Part 1: Consistency Between Multisensor Satellite Aerosol Products,
2025
Michigan Technological University
Analysis Of A Saline Dust Storm From The Aralkum Desert - Part 1: Consistency Between Multisensor Satellite Aerosol Products, Xin Xi, Jun Wang, Zhendong Lu, Andrew M. Sayer, Jaehwa Lee, Robert C. Levy, Yujie Wang, Alexei Lyapustin, Hongqing Liu, Istvan Laszlo, Changwoo Ahn, Omar Torres, Sabur Abdullaev, James Limbacher, Ralph A. Kahn
Michigan Tech Publications
The Aralkum Desert presents a challenging environment for satellite aerosol observations due to its very bright, heterogeneous, and dynamic surfaces and the lack of in situ constraints on region-specific aerosol properties. We survey current global satellite algorithms capable of detecting the presence, column burden, and elevation of airborne dust over the Aral Sea basin. Discrepancies and potential biases in retrieved UV aerosol index (UVAI), mid-visible and thermal infrared optical depth (AOD), and layer height due to different assumptions on surface and aerosol properties are assessed. The results indicate that (1) UVAI products consistently delineate dust plume extent but show large …
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 …
