1Experimental Study on Influence of Drilling Angle on Hydraulic Flushing EffectWANG Feng, TAO Yunqi, LIU Dong, LI FengTest·Research1-42Drainage and Extraction Control and Optimization of Gas Production in a High Coal Rank Coalbed Gas Well in Southern Qinshui BasinTAO Junjie, LI Yepeng, YANG Chunli, ZHANG Jinbo, SHEN JianTest·Research5-83Experimental Study on Influence of Ground Temperature and Alkaline Conditions on Spontaneous Combustion of CoalGUO Weizhou, LU Xihui, CHEN Yunmin, ZHANG Jianwei, LI Min, HAO Yinghao, HAO Chaoyu, XING XudongTest·Research9-11,154Research Progress and Prospect of Main Controlling Factors of Permeability Performance in Deep Coal SeamHAN Ying, LIU ShaofeiTest·Research12-155Study on Retarding of Organic Phosphorus Flame Retardant on Coal Spontaneous CombustionWANG Fusheng, WEI Yong, LI Ye, DONG XianweiTest·Research16-19,246Study on Gas Desorption Laws of Strong Adsorbed Coal Seam Near Adsorption Equilibrium StateGUI Hongwei, LI Xuechen, GUO YanfeiTest·Research20-247Total Pore Structure Characteristics of Coal with Different Metamorphic Degree Based on Joint Experiment of Mercury Intrusion and Low Temperature Nitrogen AdsorptionZHANG Zhaozhao, PAN Jienan, LI Meng, WANG KaiTest·Research25-298Experimental Study on Cooling Laws of Liquid CO2 on High Temperature CoalZHAI Xiaowei, WANG TingyanTest·Research30-339Study on Key Layer of Water Prevention and Control in Ordos Basin Jurassic Coalfield Based on Sedimentary Water Control TheoryYANG Jian, LIU Yang, LIU JiTest·Research34-3710Simulation Study on Development Laws of Water Flowing Fractured Zone Under Different Angles of Lateral PressureJIANG Ning, NING Jianguo, WANG JunTest·Research38-4111Laws of Overburden Strata Rupture and Fissure Evolution During Mining Under Water BodyXU Guosheng, LI Huigui, GUAN JinfengTest·Research42-45,4912Design of Deep-hole Loose Blasting Scheme in Hard-rock Roadway Excavation FaceMENG Xiufeng, YANG BoTest·Research46-4913Acoustic Emission Characteristics of Surrounding Deformation of Shield Tunnel Based on 3D Physical Similar Simulation ExperimentFAN Gongqin, CHENG Kun, LAI Xingping, WEN HongdongTest·Research50-5414Research on Proportion of Backfill Material in Coal MineSUN Wenbiao, LUO ChuanlongTest·Research55-5715Study on Deformation and Failure of Mining Slope Under Composite Mining ConditionWANG Chuangye, LI Junpeng, LIU Wei, ZHANG QiTest·Research58-60,6416Experimental Research and Application of FZ-H80 Cement-based AdmixtureYAN Xu, WANG He, LI Yanhui, ZHANG FutaoTest·Research61-6417Application of Hydraulic Flushing and Pressure Relief Technology in Outburst Coal Seam of Zhongmacun Coal MineTAO Yunqi, ZHOU Zhengtao, XU DongdongTechnology·Innovation65-67,7118Application of Liquid Carbon Dioxide Fracturing Technology in Gas Control of Soft Coal SeamZHANG Jibing, GAO YunTechnology·Innovation68-7119Fire Preventing and Extinguishing Technology Under Condition of No Pillar Mining in Easy Spontaneous and Combustion Coal SeamZHANG Yongming, WANG Gang, CHEN BaoyiTechnology·Innovation72-7420Control Technology of Dredging and Blocking For Roadway Construction of High Stress Soft Rock with Serious Water SprayingXU XiaoshanTechnology·Innovation75-79 