1Research Progress of Gas-water-rock Interaction for Gas Occurrence and Migration in Abandoned Coal MineXU Xiao, ZHOU Lai, FENG Qiyan, ZHU Xueqiang, GAO BoTest·Research1-4,82Mechanism and Formulating Study of Penetrant in Coal Seam Water InjectionHU Wenying, JIANG Zhong'anTest·Research5-83Development and Application of Negative Pressure Controlled Triaxial Servo-controlled Seepage Equipment for Fluid-solid CouplingTIAN Kunyun, ZHANG YuanjuanTest·Research9-124Study on Change Laws of CH4 Concentration Gradient in Pressure Swing Adsorption TowerYU GuishengTest·Research13-155Inhibitory Effect of Low Temperature on Methane Diffusion in CoalWANG Zhaofeng, XIE Ce, QI Chenjun, YUE Gaowei, LI XiaojunTest·Research16-196Study on Minimum Sampling Depth of Coal Seam Gas Content Determination Considering Dilatancy and Softening TheoryDONG Haofei, HAO Fuchang, LIU MingjuTest·Research20-237Simulation Research on Gas Diffusion Laws of Coal Wall at Thick Coal Seam Working faceGUO JishengTest·Research24-288Experimental Research on Response Characteristics of Permeability of Coal Containing Gas on Axial Cycle LoadingSUN Guangzhong, XU Xing, TIAN Kunyun, ZHANG RuilinTest·Research29-329Treatment Research on Dynamic Disaster Caused by Hard Roof Multi-seam MiningSHI Xianfeng, QU Xiaocheng, WEI Quande, XU Yongyong, FENG Guochun, DONG Qiang, JIN XianruTest·Research33-35,4010Research on Air-flow Movement Law in Coalfield Outcrop Fire AreaWANG Wencai, ZHANG Pei, CUI HongleiTest·Research36-4011Mechanism Research on Rock Burst in Deep Coal Seam with High GasZHANG Guanghui, OUYANG Zhenhua, LI Hongyan, DENG Zhigang, ZHAO ShankunTest·Research41-4412Comparative Study on Displacement Monitoring Methods of Similar Material ModelCHEN Tao, GUO Guangli, ZHU Xiaojun, GUO QingbiaoTest·Research45-47,5113Inversion Study on Rock Burst Danger Induced by Serrated Stopping Line Coal PillarMA Zhiqiang, HE Jiang, LI JingTest·Research48-5114Study on Hydraulic Support Working State in Fully Mechanized Mining StopeWU Shiliang, LIU SiliTest·Research52-54,5815Broken Laws of Coal Ahead of Working Face in Extremely Thick Coal SeamNAN HuaTest·Research55-5816Surrounding Rock Deformation Monitoring and Control at Oblique Cut Short Wall Working Face in Steeply Inclined and Middle Thickness Coal SeamLIU Cheng, LI Shugang, QIN Song, YANG ShouguoTest·Research59-6217Research Review on Low Voltage Inductor-disconnected Arc Discharge Based on Explosive AtmosphereZHAO Yongxiu, YIN XiaohuTest·Research63-6618Liquid CO2 Phase-transforming Fracture Technology in Forcing Coal Seam Roof CollapseCHENG Xiaoqing, WANG Zhaofeng, LI HaojunTechnology·Innovation67-7019Research of Roadway Pre-heading Technology for Thin Coal Seams Crossing FaultsGAO Jie, TU Shihao, WANG Fangtian, WANG ChenTechnology·Innovation71-73,7720Comprehensive Recognition Technology of Collapsed Column in CoalfieldZHOU Junjie, WU Zepeng, DU Zhenchuan, JIN KankunTechnology·Innovation74-77 