1Orthogonal Experiment on Sensitivity of Impact Factors in Coal Adsorbing MethaneAN Zhaofeng, LI Shugang, LIN Haifei, DING Yang, LI LiTest·Research1-42Optimization Study on Angle of Hydraulic Flushing HoleNING DeyiTest·Research5-73Experimental Study on Gas Pressure Change Law of Coal and Gas OutburstKONG Biao, WANG Enyuan, LI Zhonghui, LIU Jie, OU Jianchun, NIU Yue, QIU LimingTest·Research8-11,164Drainage Negative Pressure Optimization Based on Negative Pressure Influence FactorWANG Zhenfeng, ZHOU Ying, SUN Yuning, WANG YonglongTest·Research12-165Influence Law of Bore Diameter on Borehole Effective Drainage RadiusLIU Guanpeng, YANG Hongmin, LIU Jun, HU YunqiangTest·Research17-206Research on Active Principle and Effect Factors by Static Expansion and Crack to Increase PermeabilityXIE Xionggang, CHEN Xuexi, LIU JinweiTest·Research21-247Physical Simulation Experiment on Laws of Stress Distribution and Crack Evolutionary of Overburden Strata in Up-dip MiningLI Shugang, LI Haotian, DING Yang, ZHAO Pengxiang, LIN HaifeiTest·Research25-27,318Exploration Study on Gas Bearing Overlying Strata at the First Mining Scope of Renjiazhuang MineZHU LikaiTest·Research28-319Reasonable Location of Annular Water-intercepting Roadway Based on Shaft Water Disaster ControlZHAN YoumingTest·Research32-35,3910Active Group Variation Law in Oxidation Process of Xuandong No.2 Coal Mine Ⅲ3 Coal SeamHAO Chaoyu, ZHAO Qingbiao, GAO Huichun, WANG Ganyue, WANG XuefengTest·Research36-3911Research on Mine Earthquake Law for Tunneling Roadway in Folded RegionWANG Lianhe, WU Guanghui, SU Zhenguo, XU YonggangTest·Research40-4212Air Distribution of Non-homogeneous Environment Establishment Technique in Coal FaceLI Xi'an, MIAO Dejun, CAO Yi, SONG DiTest·Research43-4613Physical Characteristics and Permeability Law of 15# Coal Seam in Zhaojia Partition of Yangquan No.5 Coal MineWU Chao, WANG DaqiangTest·Research47-49,5314Experiment on Blasting Parameters Optimization in Roadway Excavation with Large SectionTAN Jun, YU ZhizhuoTest·Research50-5315Drainage Technology by Long and Short Drillings Associated with Shallow Holes at Fully Mechanized Working FaceWANG Jinshang, WANG Yitong, JIANG ZhigangTechnology·Innovation54-5616Open-off Cut Brush Expansion Technology for Changing Blasting Mining into Fully Mechanized Mining in Large Dip Angle "Three Soft"Medium Thick SeamMENG Yazhou, HAN Xiaokai, HU ZhifeiTechnology·Innovation57-59,6317Safety Uncovering Coal Seam Technology for Deep Shaft with Strong Outburst RiskZHANG Xiaolei, ZHOU Hongxing, JIN Kan, FENG Fu, WANG LiangTechnology·Innovation60-6318Accurate Directional Water Detection and Water Release Technology for Underground Coal MineSHI Hao, ZHANG JieTechnology·Innovation64-6719Reducing Surface Subsidence by Strip Separated Layer Grouting at Shallow-buried Working Face with Great Mining HeightSU Nanding, LI Shaoben, LI NanTechnology·Innovation68-7120Rigid-flexible Chimera Bolting-grouting Supporting Technology in Deep Steeply Inclined Seam RoadwayHOU Tao, LI Yanbin, LI LigongTechnology·Innovation72-75 