Shear Behavior and Anisotropy Characteristics of the Fracture Morphology of Sandstone with Different Water Contents by Changang Du, Lulu Sun, Botao Qin, Jiang Xu, Yixin Liu

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Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling by Fuzhou Qi, Zhanguo Ma, Dangwei Yang, Ning Li, Bin Li, Zhiliu Wang, Weixia Ma

“…Field measurement results indicated that the roadway large deformation was successfully resolved during excavation and panel retreat after implementing the novel approach, providing useful references for the application of this novel approach in similar coal mines.…”
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Evolution Law of Overburden Longitudinal Connected Fissures in a Shallowly Buried Coal Face with Thin Bedrock by Housheng Jia, Kun Pan, Luyao Wang, Shaowei Liu, Mengxiong Fu, Xiang Ji

“…To understand the evolution of longitudinal connected fissures and propose method for controlling such fissures, 3-1 Coal of the Jinjie Coal Mine in Shendong Coal Group, China, was used as a case study. …”
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Portable Gas Analyzer Based on Fourier Transform Infrared Spectrometer for Patrolling and Examining Gas Exhaust by Yuntao Liang, Xiaojun Tang, Xuliang Zhang, Fuchao Tian, Yong Sun, Haozhe Dong

“…Aimed at monitoring emission of organic gases such as CH4, C2H6, C3H8, iso-C4H10, n-C4H10, C2H4, C3H6, C2H2, CO, and CO2, from coal mines, petroleum refineries, and other plants, a Fourier Transform Infrared (FT-IR) spectrometer was used to develop a portable gas analyzer for patrolling and examining gas exhaust. …”
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Research on the Deformation Law and Stress Distribution Characteristics of Overburden under the Influence of Multiple Faults by Yaobin Qi, Weijian Yu, Desun Yu, Hanxiao Guo, Bao Pan

“…Taking the geological conditions of a coal mine in Liupanshui City, Guizhou Province, as the background. …”
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Evolution Mechanism of Water-Conducting Channel of Collapse Column in Karst Mining Area of Southwest China by Zhengzheng Cao, Yulou Ren, Qinting Wang, Banghua Yao, Xinchao Zhang

“…In order to reveal the evolution mechanism of water-conducting channel of collapse column in karst mining area of southwest China, the aquifers and water inflow rule in 1908 working face in Qianjin coal mine are analyzed. Besides, the particle size distribution and mineral component of collapse column are researched by the X-ray diffraction test and the screening method, which are the basis for researching the water inrush mechanism in karst collapse column. …”
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Performance Research of Materials and Engineering Application of Overburden Strata Separation-Zone Grouting Technology by Wanpeng Huang, Huanyu Li, Gang Sun, Donghai Jiang, Yanfa Gao

“…Simultaneously, this advancement improves the resource recovery rate of coal mines and provides greater benefits for mining enterprises.…”
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Macro-Micro Study on Mechanical Properties of Frozen Fine Sandstone Based on DEM Mathematical Model by Maoyan Ma, Min You, Shuguang Peng, Biao Zhang, Yuan Lin

“…The study of freezing rock mechanical properties is getting more and more urgent because of coal mine construction in western China. Particle discrete element method (DEM) can describe discontinuous medium problem mathematically. …”
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Study on Mechanism and Control Technology of Asymmetric Floor Heave in a Deep Soft Rock Main Roadway by Fulian He, Wenli Zhai, Xuhui Xu, Jiayu Song, Liang Li, Kai Lv

“…Considering the serious asymmetric deformation and failure of the floor of 1# main roadway in Wanglou Coal Mine, the mechanism of roadway asymmetric floor heave was studied through on-site investigation, theoretical analysis, numerical simulation, and on-site test. …”
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Experimental Investigation of Dynamic Compression Mechanical Properties of Frozen Fine Sandstone by Jiehao Wu, Haibo Wang, Qi Zong, Ying Xu

“…Aiming at the dynamic mechanical properties of weakly cemented fine sandstone in the rich water-bearing strata in western China under dynamic loading, a 50 mm rod diameter separation Hopkinson pressure bar (SHPB) test was used to study the Paleogene fine sandstone in a coal mine in Ningxia. The system carried out the impact compression tests of −15°C, −20°C, and −30°C and the average strain rate of 28 s−1–83 s−1 and obtained the dynamic compressive strength of the frozen fine sandstone specimens under different test conditions. …”
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Study on the Full‐Cycle Stress Evolution Law and Reasonable Size of Isolated Coal Pillar by Xiao‐Xiang Wei, Qing‐Long Yun, Jing Wu, Xiao‐He Wang, Yin‐Wei Wang

“…ABSTRACT To study the stress distribution law under different mining times and spaces of the protected coal pillar in the isolated working face, this paper takes a coal mine in Shanxi as the engineering background and adopts numerical simulation and theoretical analysis to obtain the stress distribution law of protecting coal pillar in the isolated working face during the tunneling period and the mining period of the working face, and proves the reasonable size of protecting coal pillar. …”
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Goaf Gas Control Improvement by Optimizing the Adjacent Roadway Large-Diameter Boreholes by Wei Wang, Zongxiang Li, Hongming Yu

“…Using the 2-105 working face of the Tenghui Coal Mine, Shanxi Province, China, as a case study, the distribution patterns of gas concentration and flow field in the goaf for various extraction flow parameters and different positions of boreholes were numerically simulated. …”
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Study on Damage Model and Damage Evolution Characteristics of Backfill with Prefabricated Fracture under Seepage-Stress Coupling by Jifeng Hou, Zhongping Guo, Weizhen Liu, Hengze Yang, WenWu Xie

“…The research results can provide a theoretical basis for the study of the stability of backfill with geological defects such as joints and fractures in deep high-stress and high-seepage water pressure coal mines.…”
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A Gas Seepage Modeling Study for Mitigating Gas Accumulation Risk in Upper Protective Coal Seam Mining Process by Cun Zhang, Lei Zhang, Mingxue Li, Chen Wang

“…The developed GSM was tested for calculating gas emission quantity from the PCSM process by utilizing the actual geological condition data of a coal mine, which is located in Hancheng, China. The results have shown great agreement with obtained field measurements, which is done by combining the fitting curve of ventilation air methane quantity for PSWF with an interlayer spacing. …”
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A Novel Mining Method for Longwall Panel Face Passing through Parallel Abandoned Roadways by Yang Li, Yuqi Ren, Nan Wang, Junbo Luo, Na Li, Yikun Liu, Guoshuai Li

“…In order to reduce the occurrence of mine pressure accidents and ensure safe mining, a new mining method named “swing-inclined” mining method was proposed and was employed in the E13103 of Cuijiazhai coal mine. Based on the process of the longwall panel face passing through the PARs, a long-span and multisupport mass-structure model of the roof was established. …”
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Energy Dissipation and Fractal Properties of Coal under Cyclic Impact Loading by Yongliang He, Chuantian Li, Yuping Fu, Xuegang Xing, Liying Sun

“…The study of the failure and fractal characteristics of coal samples under different impact pressures and different numbers of impacts provides important information for the prevention and control of coal mine rock bursts.…”
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Effects of biogenic CBM generation on microcrystalline and functional groups of high-volatile bituminous coal by Aikuan Wang, Qiang Huang, Zhiyuan Yao

“…The present research employs four samples of high-volatile bituminous coal, which were obtained from the Huainan Coal Mine located in Anhui Province, China. The samples serve a purpose in a simulation experiment aimed at investigating the generation of biogenic CBM. …”
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Study on the Adhesion Properties of Raw Coal and Adhesive Clogging Characteristics of Underground Coal Bunkers by Chongyang Jiang, Lianguo Wang, Zhiyuan Pan, Jiaxing Guo, Shuai Wang

“…Subsequently, leveraging the adhesion property parameters of raw coal and the engineering conditions of the 1011 roadway coal bunker in Taoyuan Coal Mine II, a numerical model for coal bunker discharge using irregular particles was developed with the PFC2D numerical simulation software. …”
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Roof Bolting Anchoring Performance Research on the Entry under the Gob of Close-Distance Coal Seam by Yongjie Yang, Gang Huang, Haiyu Ji

“…Based on the entry of the No.3-2 coal seam (LCS) in Chaili Coal Mine in China, theoretical analysis, pull-out bolt test, and numerical simulation were performed to calculate the maximum floor failure depth of the UCS and to determine the minimum seam spacing of the roof bolting. …”
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Fracture Characteristics and Disaster-Causing Mechanism of Rock Strata Based on Arch Mechanical Model of Plane Contact Block by Zhang Xin-chao, Du Feng, Tang Jun-hua, Wang Qin-ting, Lu Fei-fei

“…The 52307 working face with large mining height in Daliuta coal mine is chosen as the research background, where there is the special mining condition in the overburden structure with a buried depth of more than 150 m and only one layer of key structure in Shendong mining area. …”
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