1Numerical Simulation of Gas Explosion in Confined SpaceLUO Zhenmin, WU GangTest·Research1-42Experimental Study of Mechanical and Permeability Characteristics of Raw Coal Under Loading-unloading Stress ConditionsJIANG Changbao, WEI Aidong, CHEN Yufei, WANG PeiTest·Research5-93Experimental Study on Response Law of Coal Body Permeability to Bedding Angle in Baode Mining AreaZHAO Meicheng, YE Qingshu, MA Yankun, ZHANG Chi, XU ChaoTest·Research10-144Mechanism Research of Risk Identification and Prevention of Multiple Fractures in Hydraulic Fracturing of Coal RockYUAN Zheng, YANG Hongrui, LAN Lijuan, YANG Zhen, LI Xinfa, ZHANG Jing, YANG HongbinTest·Research20-245Study on Influence of Different Foaming Agents on Properties of Foamed Concrete for Extraction DrillingYUE Wenping, LING Wei, LIU ChaoTest·Research25-28,336Study on New Sealing Technology for Single Tube Connection in Through Layers Gas Drainage HoleREN Peiliang, WANG Di, GUO Xiangyin, PAN ShaojieTest·Research34-377Research Status of Influence of Water Content on Pore Structure and Spontaneous Combustion Characteristics of CoalZHAI Xiaowei, JIANG Shangrong, WANG BoTest·Research38-428Study on Fine Numerical Simulation of Arch-locking Bolt in Soft Rock RoadwayGUAN Qingsheng, YANG Bo, WANG Dechao, LI Weiteng, MEI Yuchun, YANG Ning, MA HaiyaoTest·Research51-57,699Mechanism of Water Inrush in Overlying Strata of Cretaceous Thick SandstoneXU Jianguo, ZHAO Dongliang, HE JianghuiTest·Research58-6310Study on Overlying Strata Movement in Mining Adjacent Working Face of Extra Thick SeamLAI Xingping, LI Junwei, CUI Feng, SHAN PengfeiTest·Research70-7511Study on Comprehensive Prevention and Control Technology of Fire and Gas Coupling Hazard During Tunneling Period of Baijiao Coal MineTANG Ping, WANG Shuai, XIE Xianming, CHEN YangTechnology·Innovation76-7912Research Progress of Stratified Water Stop Technology for Multilayer AquiferLI Xiaolong, DONG Shuning, LIU KaideTechnology·Innovation84-9013Exploration and Comprehensive Treatment Technology of Overburden Fracture in Underlying Goaf of ReservoirHUANG Jianfeng, WU Zhang, WANG Yutao, DUAN Peiran, LI Yongqiang, ZHANG HaoTechnology·Innovation90-9614Research on Data Tampering Prevention of Coal Mine Safety Monitoring SystemXU JinDesign·Development116-11915Study on WindPower Slag Discharge and Blocking Mechanism of Rib Drill PipeMA Guofang, LI Dongmin, WAN Zubao, LI JiaDesign·Development120-12316Mining Subsidence Monitoring Based on Combination Method of Multi-Look and Full-Resolution InterferogramLENG Hongwei, TAO Qiuxiang, LIU GuolinDesign·Development124-12717Automatic Drainage Control System of Coal Mine Based on Positive Pressure Water SupplyZHANG Weiyuan, ZHANG Pengfei, PAN Yue, ZUO Guangyu, ZHANG KaiDesign·Development128-13118Application of Gamma Logging While Drilling System in Drilling Along Coal SeamTIAN Xiaochao, JIANG Bici, JI Fanglin, CHEN LongDesign·Development135-13819Grouting Reconstruction Design of Strong Water-rich Coal Seam in Balasu Coal MineLIU Yang, WANG Chungang, LIANG Xiangyang, FANG GangApplication·Practice146-15120Study on Sealing and Utilization Technology of No.6 Water Inrush Point of Ordovician Limestone in Sangshuping Coal MineWU Jie, CHEN TongApplication·Practice152-154,158 