Research and Optimization of Gas Extraction by Crossing-Seam Boreholes from Floor Roadway by Gang Li, Jiafei Teng

“…The gas disaster threatens the safe production of coal mine seriously. Gas extraction by crossing-seam boreholes from floor roadway (GECMBFR) can reduce the pressure and content of coal seam gas, which is the main measure to prevent gas disaster. …”
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Review of the Generation of Fractures and Change of Permeability due to Water-Shale Interaction in Shales by Kerui Liu, Dangliang Wang, James J. Sheng, Jianfeng Li

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The Principle of Invariant Stress of the Surrounding Rock of the Hole under the Condition of Equal Pressure in the Deep Rock Mass by Xiangye Wu, Jingya Wang, Jingang Li, Jianwei Li, Tao Xu, Eryu Wang

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Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft by Shengrong Xie, Zaisheng Jiang, Dongdong Chen, En Wang

“…Aiming at solving the problem of asymmetric deformation, failure, and stability control of surrounding rock caused by the excavation of deep super large section soft rock chamber group passing through multilayer strata, taking super large section soft rock chamber group connected by deep vertical shaft in Wuyang Coal Mine as the engineering background, the deformation development mode of surrounding rock, the expansion situation of loosening range, and the plastic failure response characteristics in chamber group under the disturbance influence are monitored and numerically analyzed. …”
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Experimental Study on the Damage of Artificial Fracture Permeability in Coal during the Flow Back of Guar-Based Fracturing Fluid by Shenggui Liu, Jinkuang Huang, Songlei Tang, Shixiong Shi, Xuan Wu, Xin Liu

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Study on Pressure Relief Zone Formed Inside Roadway Rib by Rotary Cutting with Pressurized Water Jet for Preventing Rock Burst by Zeng-Qiang Yang, Chang Liu, Hui-Wu Jin

“…Based on the engineering geological conditions of mining area 2502 in Yanbei coal mine as a background, the comprehensive index method is used to evaluate the rock burst risk of mining area 2502, and the burst tendency of coal seam 5# under natural and water-saturated conditions is also tested in laboratory. …”
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Permeability Enhancement of Coal Seam by Lower Protective Layer Mining for Gas Outburst Prevention by Aiping He, Hua Fu, Bingjie Huo, Chaojun Fan

“…Based on the engineering background of the lower protective layer mining in Changping Coal Mine, the numerical simulation using the proposed mathematical model was performed. …”
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Analysis and Prediction of Hydraulic Support Load Based on Time Series Data Modeling by Yi-Hui Pang, Hong-Bo Wang, Jian-Jian Zhao, De-Yong Shang

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Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam by Xupeng Ta, Zhijun Wan, Yuan Zhang, Peng Shi, Zejie Wei, Xin Sun, Liangliang Jia

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Study on Mechanical Properties and Energy Consumption of Fissured Sandstone with Different Dip Angles under Impact Load by Qi Ping, Shuo Wang, Yulin Wu, Shijia Sun, Kaifan Shen, Chen Wang, Qi Gao, Chenglong Fang

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K-Means Cluster for Seismicity Partitioning and Geological Structure Interpretation, with Application to the Yongshaba Mine (China) by Xueyi Shang, Xibing Li, A. Morales-Esteban, Longjun Dong, Kang Peng

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A New Evaluation Method for Water Blocking Performance of Coal Seam Floor: Model Construction, Case Application, and Water-Preserved Strategy by Baobin Gao, Chuangnan Ren, Shaopeng Song

“…Research has shown that in the water hazard threat area of No. 10 coal seam floor in Jiegou Coal Mine, Anhui Province, the performance of system vulnerability elements is weak, the performance of system recoverability elements is better, and the performance of system adaptability elements is extremely poor. …”
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Surrounding Rock Movement of Steeply Dipping Coal Seam Using Backfill Mining by Wenyu Lv, Kai Guo, Jianhao Yu, Xufeng Du, Kun Feng

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Interval combined prediction of mine tunnel's air volume considering multiple influencing factors. by Zhen Wang, Erkan Topal, Liangshan Shao, Chen Yang

“…Experimental analysis using data from a coal mine in Inner Mongolia showed that the method could reduce Combined Weighted Mean Absolute Error(CWMAE) to a maximum of 5.0384, Combined Weighted Root of Mean Squares Error(CWRMSE) to 6.8889, and Combined Weighted Mean Absolute Percentage Error(CWMAPE) to 1.4756, which indicates that the method proposed in this study can effectively improve the prediction accuracy of the mine tunnel air volume.…”
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Roof Water Damage Prediction and Evaluation of Sand-Mud Sedimentary Tectonic Strata by Pengfei Jiang, Fumin Zhuge, Suolin Jing, Zongkai Li, Peng Xiao, Yuguang Lv

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Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test by Zhaolong Sang, Donghui Ma, Yaoyao Meng, Qian Yin, Xiaowei Liu, Zhimin Sun, Wei Wang

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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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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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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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