The Innovative Design of Deep In Situ Pressure Retained Coring Based on Magnetic Field Trigger Controller by Guikang Liu, Mingzhong Gao, Zhiwen Yang, Ling Chen, Maoquan Fu, Heping Xie

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Analysis on Deformation and Stress Characteristics of a Multibraced Pit-in-Pit Excavation in a Subway Transfer Station by Xin Shi, Chuanxin Rong, Hua Cheng, Linzhao Cui, Bin Wang, Shicheng Sun

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The Mechanism of Rock Mass Crack Propagation of Principal Stress Rotation in the Process of Tunnel Excavation by Guanfeng Chang, Xinzhu Hua, Jie Zhang, Peng Li

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Comprehensive Evaluation of Blast Casting Results Based on Unascertained Measurement and Intuitionistic Fuzzy Set by Li Ma, Jianguo Zhang, Chen Xu, Xingping Lai, Qiang Luo, Chendong Liu, Kemin Li

“…The measured and processed data of blast casting in Heidaigou Open-Pit Coal Mine were calculated by the evaluation model. …”
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Study on cracking mechanism and key parameters of roof in gob-side entry retaining by pre-split blasting roof in deep mine by Xiao Liu, Xueqiu He, Yuntao Liang, Xinzhu Hua, Chen Li

“…Based on 7135 working face of Qidong Coal Mine, the cracking mechanism of pre-splitting of gob-side entry retaining by roof cutting and the key parameters of pre-splitting blasting are studied by means of theoretical analysis, numerical simulation, and on-site measurement. …”
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Study on Reasonable Size of Coal and Rock Pillar in Dynamic Pressure Roadway Segment of Fully Mechanized Face in Deep Shaft by Binyang Sun, Pingsong Zhang, Haifeng Lu

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POSSIBILITIES OF SELF-ORGANIZATION METHODS IN PREDICTING EMERGENCY SITUATIONS IN MINING by I. S. Bondarenko, V. V. Kupriyanov

“…The article is directed at developing and substantiating one of the approaches to forecasting the individual residual resource of a particular mining equipment in operation in a coal mine clean-up area. The main causes, affecting the accuracy of forecasts, have been identified. …”
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Study on the Constant Resistance Coupling Support Technology for Rock Column at the Intersection Point of Deep Soft Rock Large Section Roadway: A Case Study in China by Huichen Xu, Yong Zhang, Jinkun Yang, Jiangbing Li, Xiaoming Sun, Cheng Xie

“…In order to solve the problem on the serious deformation and failure of the rock column at the intersection of large cross sections in Shiyakou coal mine, based on field engineering geomechanics analysis, theoretical analysis, and three-dimensional numerical simulation, combined with the mutual coupling between the constant resistance coupling support cable and surrounding rock, a dual-control constant-resistance coupling control technology with high prestressed constant resistance coupling support cable as the core solution is proposed. …”
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The Principle and Downhole Testing of Water Injection Exploration in Depleted Reservoirs by Jinpeng Xu, Hui Zhao, Bing Dong, Yi Li, Chuang Wang

“…Coal mine water hazards are one of the five major natural disasters in mines, and water in depleted areas is the most serious form of water hazard causing casualties. …”
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Similar Material Simulation Study on Protection Effect of Steeply Inclined Upper Protective Layer Mining with Varying Interlayer Distances by Zhigang Yuan, Yaohua Shao, Zhuohui Zhu

“…The research results provide a useful guide for layouts of roadway and gas drainage boreholes to prevent gas disaster in Nantong coal mine district.…”
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Failure Mechanisms and the Control of a Longwall Face with a Large Mining Height within a Shallow-Buried Coal Seam by Haijun Wang, Yingjie Liu, Yuesong Tang, Hao Gong, Guoliang Xu

“…In the present study, the 12401 longwall face of the Shangwan Coal Mine, Inner Mongolia, China, with a mining height of 8.8 m, is taken as an example to study the mechanisms underlying failure phenomena of coal walls and their control methods. …”
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Spatial distribution and migration law of respirable dust in fully mechanized mining face by Xiangjun CHEN, Xiangyang YE, Yibo LI, Peiqi ZUO

“…For the problem that the dust sampling method can only measure the dust mass concentration at fixed working locations, and can not systematically reflect the spatial distribution characteristics and migration rules of the dust mass concentration in the working face, taking the N1219 fully mechanized mining face of Ningtiaota Coal Mine as the research object, a three-dimensional numerical simulation was conducted on the spatial distribution and transport law of respirable dust (hereinafter referred to as “exhaled dust”) in the fully mechanized mining face using Fluent software, using the method of bidirectional coupling between discrete and continuous phases. …”
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Pore Structure and Fractal Characteristics of Shale under the Control of Bedding and Size: A Case Study of Shale from the Longmaxi Formation in China by Yao Cheng, Yifeng Xie, Yulin Ma, Yanlin Zhao

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Influence of Two Cooling Methods on Dynamic Mechanical Properties of High Temperature Sandstone by Qi Ping, Qi Diao, Dezhi Qi, Chen Wang, Chuanliang Zhang

“…To study the influence of different cooling methods on dynamic mechanical properties of high temperature rock, both natural cooling and water cooling were used to cool high temperature (100°C∼1000°C) coal mine sandstone to room temperature (20°C). Basic physical parameters of sandstone were measured, and impact compression tests were carried out by using the SHPB test device. …”
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The Law of Fracture Evolution of Overlying Strata and Gas Emission in Goaf under the Influence of Mining by Cheng Cheng, Xiaoyu Cheng, Rui Yu, Wenping Yue, Chao Liu

“…The aim of this study was to explore a case study of the Wangjialing coal mine 12322 working face in Shanxi, China, through physical simulation and field observation. …”
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Study on Permeability Improvement Technology by Injecting Air into the Gas Drainage Borehole in Low-Permeability Coal Seam by Li Hui, Guo Chengwei, Sun Yuanfang, Guo Shaoshuai

“…The results indicate that the best condition is a negative pressure drainage at 26 kPa and a gas injection pressure at 0.6 MPa in the vertical direction and in the horizontal direction of the injection hole. In Shanxi Daping Coal Mine 3113 working face, the field test is implemented. …”
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Improvement of the technology of flame arrester manufacturing by K. N. Pantyukhova, O. Yu. Bourgonova, Yu. O. Filippov, G. P. Ulyasheva

“…Methane emissions occur in coal mines during the development of gasbearing seams. …”
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Study on Factors Influencing the Viscosity of Sodium Carboxymethyl Cellulose Used in Capsule-Mucous Sealers by Fakai Wang, Zhongguang Sun, Xuelong Li, Kequan Wang, Deyou Chen, Zhen Li

“…The best solution for stabilizing the viscosity was determined and effectively applied at a coal mine site, where an overall improvement in the viscosity behaviour was observed.…”
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THE CONCEPT OF THE SIMULATION MODEL OF THE DECISION SUPPORT SYSTEM OF THE COAL ENTERPRISE by I. S. Bondarenko

“…In addition, the article presents the structure and description of the implemented simulation model of the main production process of the experimental coal mine. The paper indicates the role of the user-manager in the decision-making process based on the results of modeling. …”
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ADVANCE HYDRAULIC SUPPORT MULTI-OBJECTIVE OPTIMIZATION DESIGN BASED ON NSGA-Ⅱ ALGORITHM by NIU YanQi, LIU Wei, ZHANG DeSheng

“…ZTC16044 /27 /50 link mechanical fracture coal mine accident did not occur in continuous operation Hong Liu-lin,to improve the overall performance of advanced hydraulic support provides an effective way.…”
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