1Numerical Simulation of Seepage-heat Similarity for Effective Radius of Drilling Gas DrainageLIU Feifei, HUANG Yuanyue, XU Quan, LI Shuai, ZHAO Pengtao, QIN Zuoya, HUANG BingTest·Research1-52Experimental Study on Gas Adsorption Capacity of Tectonic Coal in Hancheng Mining AreaLIANG Jie, KANG Zhiqin, YAO HuifangTest·Research6-103Effect of Coal Rank on Gas Diffusion Initial Velocity and Hardiness CoefficientJIANG Haina, CHENG Yuanping, WANG LiangTest·Research11-13,174Experimental Study on Gas Adsorption Law in Coal Body Under Different PressureQIN Yueping, LIU Peng, HAO Yongjiang, WANG Jian, LIU YanqingTest·Research14-175Experimental on Spot Sampling Technique for Gas Outburst PredictionXU YanpengTest·Research18-19,236Surface Fractal Characteristics of Coking Coal Pore Based on Low Temperature Nitrogen AdsorptionGAO XuTest·Research20-237Mechanism and Prevention Technology of Gas Explosion Caused by Coal Spontaneous Combustion in GoafLI Shugang, AN Zhaofeng, PAN Hongyu, LIN Haifei, DING YangTest·Research24-27,318Relationship Between Submicroscopic Fracture Density and Coal RankWANG Haichao, PAN Jienan, WANG Kai, NIU QingheTest·Research28-319Influence of Weak Surface Broken Time on the Effect of Vacuum Cavity Explosion VentingLI Qinhua, HU Liming, JIANG Shuguang, SHAO HaoTest·Research32-3410Microscopic Reaction Mechanism Function of Coal Spontaneous Combustion Development ProcessXU Jun, WANG Deming, QI GuanshengTest·Research35-3811Experimental Study of Enhancing Coal Ash Slurry Performance by CementJIN Yongfei, LI Haitao, MA Rong, YANG Zhiwen, ZHAO JunTest·Research39-4212Field Experiment Study on CO Generation and Sources Law in Coal Seam MiningWANG Liancong, SUN Yong, FENG Wenbin, CHEN Yang, ZHANG Depeng, YIN Zhanchun, WANG GangTest·Research43-45,5013Exploration and Practice of New Method for Rock Burst Hazard Comprehensive EvaluationFU Jianhua, LI Xueping, YU Guiliang, SHI Weifeng, YUAN XunTest·Research46-5014Numerical Simulation on Influence of Coal Seam Thickness Variation on Rock Burst DangerREN Zhongping, WANG Chunqiu, JIANG Bangyou, SHEN Tengfei, XIAO ZhiminTest·Research51-53,5715Research on Height of Overlying Strata Fissure Zone in Guanzhuanghe Mining AreaLIU Guolei, WANG Dongxu, LIU WeijianTest·Research54-5716Simulation Study on Characteristic of Large Fault Mining Activation and Its Effect on Fault Waterproof PillarsZHANG Huanhuan, LIU Qimeng, ZHANG Zhouxin, SONG MakeTest·Research58-6017Roof Failure Height of Rectangular Roadway in Bedded RockGU Shuancheng, SHI Xiangdong, WANG EnboTest·Research61-63,6718Mechanical Mechanism Formed by Combined Three-hinged Arch Fractured in Composited RoofWANG Jun, NING Jianguo, QIAN Kun, SUN Bi, LING YingcaiTest·Research64-6719Fine Integrated Geophysical for Thin Coal Area Range at Fully Mechanized Mining Working FaceWU Zhengfei, HAN Depin, WANG Cheng, CUI Weixiong, WANG PengfeiTest·Research68-7120Mechanical Behavior Numerical Simulation of Surrounding Rock for Optimizing Section Shape of Straight Arch Wall Coal RoadwayYUE Gaowei, LIANG Weimin, BI WeiTest·Research72-75 