Prediction of time-energy-location of microseismic events induced by deep coal-energy mining: Deep learning approach by Yue Song, Enyuan Wang, Hengze Yang, Dong Chen, Baolin Li, Yangyang Di

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Current situation and development trend of line selection method for single-phase grounding fault in mine power supply system by Zhanshe YANG, Cheng ZHANG, Xiang RONG

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Risk Assessment of Water and Sand Inrush in Mining under Thick Loose Layer Based on Comprehensive Weight-Cloud Model by Wenquan Zhang, Xintao Wu, Xunan Wu, Yu Lei, Jianli Shao, Zaiyong Wang

“…The comprehensive weight-cloud model assessment method is applied to the risk assessment of water and sand inrush in the 6311-2 working face in the sixth mining area of Baodian Coal Mine. According to the assessment results, the following conclusions can be drawn: (1) the bedrock thickness and the coal seam thickness are the main factors of water and sand inrush under loose layer mining; (2) the assessment results obtained by the comprehensive weight-cloud model method are consistent with the actual situation. …”
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Coupled Effect of Water Temperature and Cyclic Wetting and Drying on Dynamic Mechanical Characteristics of Sandstone by Pu Yuan, Ning-Ning Wei, Qin-Yong Ma, Ju-Cai Chang

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Dynamic Compressive Characteristics of Sandstone under Confining Pressure and Radial Gradient Stress with the SHPB Test by Shiming Wang, Yunsi Liu, Jian Zhou, Qiuhong Wu, Shuyi Ma, Zhihua Zhou

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Theoretical Analysis on Distribution Pattern of Plastic Zone in Surrounding Rock of High-Gas-Coal Roadway by Chao Yuan, Liming Cao, Lei Fan, Jianqiang Guo

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Research on Optimal Design of Pressure Relief Blasting Parameters of Middle Rock Pillar in Near Vertical Coal Seam by Yadi Wang, Shiqi Yu, Hai Rong, Liting Pan

“…In order to prevent the occurrence of rockburst accident caused by the stress concentration of the middle rock pillar in the near-vertical coal seam and affect the mining of the lower coal seam in the known goaf, taking Wudong coal mine in Xinjiang as an example, based on the special geological and mining conditions of the mine, through the simulation experiment and numerical analysis of similar materials, the variation law of the stress distribution of the middle rock pillar with the increase in mining depth is analyzed. …”
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Enhancement of Methane Detection in Tunable Diode Laser Absorption Spectroscopy Using Savitzky–Golay Filtering by Shichao Chen, Xing Tian, Tong Mu, Jun Yuan, Xile Cao, Gang Cheng

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Study on dynamic compression characteristics of coal containing gas under different strain rates by Xin Gao, Sheng Xue, Tu Qingyi

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The Influences of Key Strata Compound Breakage on the Overlying Strata Movement and Strata Pressure Behavior in Fully Mechanized Caving Mining of Shallow and Extremely Thick Seams:... by Junmeng Li, Yanli Huang, Jixiong Zhang, Meng Li, Ming Qiao, Fengwan Wang

“…In order to analyze the impact of compound breakage of key strata on overlying strata movement and strata pressure behavior during the fully mechanized caving mining in shallow and extremely thick seams, this paper took the 1322 fully mechanized caving face in Jindi Coal Mine in Xing County as the engineering background. …”
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Comparative Analysis of Roadway Reinforcement Effects Based on Fluid-Solid Coupling in the Fractured Zone of Water-Rich Fault by Jihua Zhang, Yun Dong, Yadong Chen, Yang Jiang, Huasheng Sun, Yuqing Fan, Chun Wang

“…In this paper, the 15107 mining roadway built by Yuxing coal mine in such a fault zone was used as a case study to determine the water content of the surrounding rocks and a fault zone using the transient electromagnetic method (TEM). …”
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Multiscale Fracturing in Medium- to Low-Rank Coals and Its Implications on Coalbed Methane Production in the Baode Area, Eastern Ordos Basin, China by Wei Zhang, Baoshan Zhao, Qingfeng Zhang, Jikun Zhang, Ziling Li, Xiaoguang Sun, Mingming Yan

“…Herein, we present a case study, combining underground coal mine surveying and specimen, thin section, and scanning electron microscope observations for illustrating the ~m-, ~cm-, ~mm-, and ~μm-scale fractures present in the Baode area, eastern Ordos Basin, China. …”
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Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf by Pengfei Jiang, Peng Xiao, Fanbao Meng, Suolin Jing, Jingkai Zhang, Ge Wang, Peng Zhao

“…To solve the problems of the rapid advance of the working face was delayed by complicated working procedure and high labor intensity, and the severe damage of roof bolt (anchor cable) induced by advanced hydraulic support, the deformation characteristics of surrounding rock, and the supporting principle of grouting truss anchor cable were analyzed theoretically by taking the roadway of 3_(down) coal seams 2326# working face in Sanhekou coal mine as the research object; then, the mechanical model of supporting structure of roadway under goaf was established. …”
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Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths by Chengliang Zhang, Danyong Ye, Ping Yang, Shunchuan Wu, Chao Wang

“…With the increased mining depth, the dynamic disaster of rock burst in coal mines has become increasingly prominent, and the impact tendency of coal and rock mass in deep coal seam mining is a necessary condition for the occurrence of rock burst and an important index to measure the failure of coal and rock mass. …”
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Investigation on the Vibration Effect of Shock Wave in Rock Burst by In Situ Microseismic Monitoring by Mingshi Gao, Hongchao Zhao, Yichao Zhao, Xiaojun Gao, Xiangyu Wang

“…Due to the complicity of mechanics of rock burst in coal mine roadway, the direct use of traditional investigation method applied in tunnel is inappropriate since the components of surrounding rock are much more complex in underground than that of tunnel. …”
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The Influence of Ventilation Arrangement on the Mechanism of Dust Distribution in Woxi Pithead by Zhiyong Zhou, Pei Hu, Chongchong Qi, Tianpei Niu, Ming Li, Long Tian

“…The established computational fluid dynamics (CFD) models were validated using the airflow velocity data and the dust concentration data monitored at different positions from the operating coal mine. A comprehensive sensitivity study was conducted to investigate the influence of four parameters on dust suppression, including the distance of pressure air duct outlet from working face (Lp-outlet), the distance of exhaust air duct inlet from working face (Le-inlet), the ratio of pressing air volume to lab sorption air volume (K), and the installation height of the air duct (H). …”
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Disastrous Mechanism of Water Discharge in Abandoned Gob above the Stope in Mining Extra-Thick Coal Seam by Haixiao Lin, Feng Yang, Zhengzheng Cao, Yue Wang, Xiaojian Jiao

“…With the mining geological conditions of the 8202 working face in the Tongxin coal mine as references, the disastrous mechanism of water discharge in the abandoned gob above the stope in the mining extra-thick coal seam is researched by numerical simulation with the UDEC numerical software, and the research results are obtained. …”
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Strength Investigation of the Silt-Based Cemented Paste Backfill Using Lab Experiments and Deep Neural Network by Chongchun Xiao, Xinmin Wang, Qiusong Chen, Feng Bin, Yihan Wang, Wei Wei

“…However, its application in coal mines is limited due to the lack of mine tailings that can work as aggregates. …”
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Expansion patterns of plastic zone in surrounding rock of rectangular roadway in non-uniform stress field and equivalent circumcirble analytical method by GUO Xiaofei, JIN Yiwei, ZHANG Hongkai

“…Rectangular roadway is widely used in coal mine as a type of roadway section with easy excavation, simple support and high space utilization. …”
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Fold-Related Faults Track Progressive Fold Development from Layer-Parallel Shortening to Subsequent Orthogonal Extension within an Appalachian Buckle Fold System: Bear Valley Mine,... by Arlo Brandon Weil, Mary Beth Gray, Kylie G. Cush, Mattathias D. Needle, Juliet G. Crider

“…Outstanding three-dimensional exposures of adjacent folds in an abandoned coal mine within the Appalachian Valley-and-Ridge tectonic province permit a detailed analysis of macroscopic strain accommodation by minor faulting in the lead up to and during buckle folding. …”
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