Construction Risk Assessment of Tunnel Crossing Goaf Based on Analytic Hierarchy Process‐Extension Theory Model by Chao Yuan, Lian‐xin Li, Xiao‐wei Su, Rong‐jie Du

“…To grasp the risk status of tunnel construction safety in coal mine goaf, we selected 11 risk factors as evaluation indicators on the basis of investigation and analysis of risk factors in a large number of engineering cases of tunnel crossing coal mine goaf. …”
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Study on Optimization of Coal Truck Flow in Open-Pit Mine by Haiming Bao, Ruixin Zhang

“…Through analyzing the coal mining production process, the key issues of coal mining truck flow optimization are obtained. …”
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Dynamic Prediction Model of Multisource Gas Emissions in a Fully Mechanized Top Coal Caving Based on the Coal Particle Size Distribution by Han Gao, Xuanping Gong, Xiaoyu Cheng, Rui Yu

“…Coal particle size is an important factor affecting the gas emission law. Taking Wangjialing coal mine as the research object, the particle size distribution of coal mining and caving is analyzed via field tests in order to develop the gas emission theoretical model from granular coal. …”
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Research on the Disaster-Inducing Mechanism of Coal-Gas Outburst by Fengxiang Nie, Honglei Wang, Liming Qiu

“…In China, coal-gas outburst is seriously affecting safety of the coal mine. To improve the safety status of underground coal mining, this work investigated the evolution process and occurrence mechanism of coal-gas outburst under the coupling action of stress and gas. …”
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Application of Intelligent Sensor in Mining Electrical Equipment Collection by Jing Chang, Fating Zhang, Yuyu Zhu

“…The effect of the abovementioned acquisition scheme in coal mine application is verified, so as to realize the scientific monitoring of coal mine safety.…”
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Study on In Situ Stress Distribution Law of the Deep Mine: Taking Linyi Mining Area as an Example by Xuelong Li, Shaojie Chen, Sheng Wang, Meng Zhao, Hui Liu

“…The maximum horizontal stress direction of the Gucheng Coal Mine, Guotun Coal Mine, and Pengzhuang Coal Mine was NW-SE under the influence of regional geological structure, while the maximum horizontal stress direction of Wanglou Coal Mine was NE-SW under the influence of local geological structure. …”
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Distribution Law of In Situ Stress and Its Engineering Application in Gateroad Maintenance: A Case Study by Guangchao Zhang, You Li, Guangzhe Tao, Miao Chen, Ruihua Xu, Hanqing Guo, Devkota Bidit, Guanglei Zhou, Zhi Qu, Hao Zuo

“…In this study, the stress relief method of hollow inclusion and mathematical-statistical analysis are used to study the in situ stress distribution law of the Guotun coal mine, and the optimization strategy of roadway support is put forward. …”
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Erratum to “Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas” by W. Nie, S. J. Peng, J. Xu, L. R. Liu, G. Wang, J. B. Geng

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Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams by Jianshuai Ji, Zhihua Li, Ke Yang, Guanghua Zhou, Guojun Ma, Cheng Liu, Peng Zhou

“…When multiple key strata and coal seams are distributed at intervals, the separation below the high-level key stratum during upper coal mining and the separation below the low-level key stratum during lower coal mining are formed. …”
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Numerical Investigation of Hydraulic Fracture Propagation in Naturally Fractured Reservoirs Based on Lattice Spring Model by Kaikai Zhao, Pengfei Jiang, Yanjun Feng, Xiaodong Sun, Lixing Cheng, Jianwei Zheng

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The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium by Mingze Du, Yanchun Xu, Heng Duan, Wen Li

“…Based on the measured hydrophobic compression ratio in an adjacent coal mine, the compressive amounts of the strata near the main and auxiliary shafts in the Zhuxianzhuang Coal Mine are predicted under the condition of drastic drawdown dewatering, which will be 249.69 mm and 302.75 mm, respectively. …”
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Outburst mechanism and hazard prevention technique of limestone aquifer under isolated island panels by Wei Wang, Wei Wang, Wei Wang, Yanjun Wu, Yanjun Wu, Yanjun Wu, Yongli Shi, Yongli Shi, Yongli Shi, Jingzhong Zhu

“…The theoretical results and engineering application in this study have significant implications for coal mining on other isolated islands affected by panel floor water damage.…”
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Assessment of Risk Tendency of Coal Bursting Pressure in Deep Outburst Seam by Beifang Gu, Longkang Wang, Minbo Zhang

“…In order to analysis the mechanism of coal bursting pressures of deep coal seams and take effective methods to identify, monitor, and control coal bursting pressure, this paper takes 21101 working face of No. 2 coal seam in Dongpang Coal Mine as an example. Risk identification is carried out for the hazardous and harmful factors of coal bursting pressure in coal seam 21101 in Dongpang Coal Mine, and each influencing factor is classified. …”
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Grouting Mechanism in Water-Bearing Fractured Rock Based on Two-Phase Flow by Bo Ren, Wenqiang Mu, Bingyou Jiang, Guofeng Yu, Lianchong Li, Tingshuang Wei, Yunchun Han, Diancai Xiao

“…The diffusion model in dynamic water environment was studied, and the diffusion range varying with time in the grouting area of Zhangji Coal Mine was explored. The optimization method of multi grouting holes was put forward, and the influence of water flowing was discussed. …”
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Study on Roof-Coal Caving Characteristics with Complicated Structure by Fully Mechanized Caving Mining by Yunpei Liang, Lei Li, Xuelong Li, Kequan Wang, Jinhua Chen, Zhongguang Sun, Xuelin Yang

“…According to the mechanical characteristics of roof-coal in Qinyuan coal mine, deep-hole blasting technique has been used to reduce the fragments of roof-coal crushed. …”
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Risk Assessments of Water Inrush from Coal Seam Floor during Deep Mining Using a Data Fusion Approach Based on Grey System Theory by Yaru Guo, Shuning Dong, Yonghong Hao, Zaibin Liu, Tian-Chyi Jim Yeh, Wenke Wang, Yaoquan Gao, Pei Li, Ming Zhang

“…For the safety of coal mining, horizontal directional drilling and grouting techniques have been implemented to detect and plug the fractures and conduits that deliver high-pressure groundwater to coal mine. …”
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Stability Analysis and Derived Control Measures for Rock Surrounding a Roadway in a Lower Coal Seam under Concentrated Stress of a Coal Pillar by Zhuoyue Sun, Yongzheng Wu, Zhiguo Lu, Youliang Feng, Xiaowei Chu, Kang Yi

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Effects of Unloading Rate on Energy Evolution Mechanism in the Single-Side Unloading Failure of Highly Stressed Marble by Wensong Xu, Guangming Zhao, Xiangrui Meng, Siming Kao, Shunjie Huang, Chongyan Liu

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Experimental Study on Shear Characteristics of Coal Samples in Different Water-Bearing States by Yang Wu, Lujun Wang, Baoyang Wu, Ze Xia

“…During the establishment of the coal mine goaf reservoir, the strength of the coal pillar dam was weakened by various water–rock interactions triggered by water movement. …”
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Experimental Study on Damage Characteristics of Solidified Mud under Coupling Action of Freeze-Thaw Cycle and Chloride Salt by Jinsong Zhang, Yaxing Wang, Jianyong Pang, Yu Lu, Yishun Bu

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