Multiscale Laboratory Study and Numerical Analysis of Water-Weakening Effect on Shale by Zhen Li, Shangge Liu, Wentao Ren, Jinjin Fang, Qinghua Zhu, Zhilin Dun

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Experimental Study on Dynamic Performance of Rock-Concrete Composite with Different Thickness Ratios by Qi Ping, Kaifan Shen, Qi Gao, Chen Wang, Shuo Wang, Yulin Wu, Jing Hu

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Key Bearing Structure Instability Mechanism: A Case Study in Mining Under Close-Distance Coal Pillar by Jieyang Ma, Shihao Tu, Hongsheng Tu, Kaijun Miao, Hongbin Zhao, Long Tang

“…This study established a new key bearing structure model for analyzing the structural instability mechanism when mining under the coal pillar at the working face by taking Shaping Coal Mine as an example. The purpose of this study is to analyze the formation process, load transfer mechanism, and two failure types of the key bearing structure using theoretical analysis and numerical simulation. …”
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High-temperature structural disorders stabilize hydrous aluminosilicates in the mantle transition zone by Baoyun Wang, Jin Liu, Yanyao Zhang, Baisheng Nie, Wei Yang, Jialong Hao, Xing Ding, Yongjun Tian

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Influence of Gas from Long-Flame Coal Spontaneous Combustion on Gas Explosion Limit by Haitao Wang, Yongli Liu, Qiyuan Shan

“…To investigate the impact of multiple combustible gases produced by long-flame coal spontaneous combustion on the gas explosion limit and to guide the reoperation of the coal mine goaf and fire area, the influence of gas generated by coal spontaneous combustion on gas explosion limit is investigated in this paper using a temperature-programmed device and a 20 L spherical explosion device. …”
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Method to Calculate Working Surface Abutment Pressure Based on Key Strata Theory by Hongkai Han, Jialin Xu, Xiaozhen Wang, Jianlin Xie, Yantuan Xing

“…The abutment pressure distribution of working surface 207 after mining was then calculated using our method, based on mining conditions present in the Tingnan coal mine. The calculated results were verified using measurements from borehole stress meters and microseismic monitoring systems, as well as numerical simulations. …”
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Study on Mechanism of Influence of Mining Speed on Roof Movement Based on Microseismic Monitoring by Ke Ma, Su-jian Wang, Fu-zhen Yuan, Yi-lin Peng, Shi-min Jia

“…Based on the study of the movement rule of the rock strata under the influence of the mining speed in the typical working face of Dongjiahe coal mine, the distribution of microseismic events and the variation characteristics of microseismic parameters in the slow and fast advancing stage are compared and analyzed, and the mechanism of the rock strata activity under the influence of the mining advancing speed is revealed from the perspective of the microfracture. …”
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Energy and CO2 fluxes in the early stage development of reclaimed and unreclaimed post-mining areas by Aysan Badraghi, Ondřej Mudrák, Jiří Kučera, Leonardo Montagnani, Jan Frouz

“…Our novel results show that early post-coal mining sites were net sources of CO2 but became carbon sinks on a monthly scale within four years, highlighting the rapid ecosystem recovery at both sites. …”
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Prediction of Fracture Evolution and Groundwater Inrush from Karst Collapse Pillars in Coal Seam Floors: A Micromechanics-Based Stress-Seepage-Damage Coupled Modeling Approach by Yinlong Lu, Bingzhen Wu, Mengqi He, Lianguo Wang, Dan Ma, Zhen Huang

“…Karst collapse pillars (KCPs) frequently cause severe groundwater inrush disasters in coal mining above a confined aquifer. An accurate understanding of the damage and fracture evolution, permeability enhancement, and seepage changes in KCPs under the combined action of mining-induced stress and confined hydraulic pressure is of great significance for the early prediction and prevention of groundwater inrush from KCPs in coal seam floors. …”
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Formation Mechanism of “Large-Area Sweating” Water Seepage from Deep Mine Sandstone Pores by Yanzhi Li, Weiguo Qiao, Yue Wu, Xungang Li, Shuai Zhang, Xiaoli Zhang

“…According to the case analysis on the “large-area sweating” seepage in the Tangkou coal mine of the Southwest Shandong coalfield, the lower limit of permeability of the “large-area sweating” sandstone is approximately 0.25 mD. …”
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Analysis of Overburden Structure and Pressure-Relief Effect of Hard Roof Blasting and Cutting by Hao Liu, Jin Dai, Jinquan Jiang, Pu Wang, Jiqiang Yang

“…Finally, on-site monitoring of the anchor-cable force and support force in panel 5312 of the Jining no. 3 coal mine is used to verify the pressure-relief effect after roof blasting and cutting. …”
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Comprehensive Environmental Monitoring System for Industrial and Mining Enterprises Using Multimodal Deep Learning and CLIP Model by Shuqin Wang, Na Cheng, Yan Hu

“…The model was trained and evaluated using real-time data from a coal mining enterprise’s environmental monitoring system spanning March to September 2023. …”
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Study on the temperature prediction model of residual coal in goaf based on ACO-KELM by ZHAI Xiaowei, WANG Chen, HAO Le, LI Xintian, HOU Qinyuan, MA Teng

“…In the 21404 working face goaf of Hulususu Coal Mine, beam tubes and distributed fiber optics were arranged to collect data on O2 concentration, CO concentration, CO2 concentration, and temperature within the goaf. …”
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Multivariate Prediction Model of Strength and Acoustic Emission Energy considering Parameter Correlation of Coal or Rock by Shuncai Li, Daquan Li, Nong Zhang

“…For the coal sample from a coal seam of Longde Coal Mine in China, the mass density of coal samples and the acoustic velocity in the samples before loading are measured at first, and their respective coefficient of variation is analyzed. …”
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Study on Pressure Relief Technology of High-Pressure Water Jet of Residual Coal Pillar in Overlying Goaf in Close Seam Mining by Shang Yang, Xuehui Li, Jun Wang, Shuhao Yang, Zhen Shen, Guangzheng Xu

“…Based on the geological occurrence of the No. 3 coal seam and mountain No. 4 coal seam in the Yanzishan coal mine, the high-pressure water jet pressure relief technology of residual coal pillars in the overlying goaf of close-distance coal seams was studied by theoretical analysis and field industrial tests. …”
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Experimental Study on the Durability of Fly Ash-Based Filling Paste in Environments with Different Concentrations of Sulfates by Boqiang Cui, Yin Liu, Hao Guo, Zhanxin Liu, Yao Lu

“…In order to study the effects of different concentrations of sulfate on the strength of fly ash-based coal mine filling paste, using variable control, mechanical analysis, and other means, the changes in the uniaxial compressive strengths of filling paste blocks soaked in different concentrations of sodium sulfate solution for different durations are studied, and their stress-strain curves are discussed. …”
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Time Characteristics of the Influence Radius by Injecting N2 to Displace Coalbed Methane: A Case Study by Chen Li-wei, Yang Tian-hong, Yang Hong-min, Wang Li-guo

“…According to the results calculated using this formula at an injection pressure of 0.5 MPa, the optimum spacing between boreholes was determined to be 1.5 m at the Shigang Coal Mine. The analysis of reasonable spacing between injection and extraction boreholes at different injection pressures shows that the reasonable spacing between boreholes was linearly correlated with gas injection pressures. …”
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Dynamic Evolution Law of Overburden Rock in Shallow-Buried Super-High Fully Mechanized Working Face and Determination of Support Strength by Yingjie Liu, Haijun Wang, Qingjie Qi, Anhu Wang, Youxin Zhao

“…Based on the 12401 fully mechanized mining face of Shangwan Coal Mine in Shendong, this study conducted research and analysis using the methods of similarity simulation experiment, numerical simulation, and field measurement. …”
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Design of a double-blade swirl wet dust collector for comprehensive mining faces by GONG Xiaoyan, HE Zilun, CHEN Long, WANG Haijun, FU Haoran, PEI Xiaoze, SUN Haixin, ZHANG Hongbing, YANG Fuqiang

“…To address the issue of low dust collection efficiency of dust collectors currently used in the environment of coal mine comprehensive mining faces, a double-blade swirl wet dust collector was designed. …”
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Characteristics of Stress Transfer and Progressive Fracture in Overlying Strata due to Mining-Induced Disturbances by Xiang-feng Lv, Hong-yuan Zhou, Ai-wen Wang, Chun Feng, Xiao-chun Xiao

“…In this study, based on the mining of the 13210 working face in the Yima coal mine of the Gengcun village, China, a simplified mechanical model for the analysis of dynamic destabilization of the overlying strata during underground mining was constructed. …”
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