1Research on Pillarless Mining Techenique by Top-cut Pressure Relief of Hard RoofCAI FengTest Research1-5,92Research on Key Reinforcement Position of U-shaped Steel Support under Different Surrounding Rock ConditionsZHANG Hongxue, WANG Bo, YAO Weifen, WANG YunchenTest Research6-93Numerical Research on Air Flow Field Distribution in Underground Coal Gangue Separation Workshop Based on FLUENTMA Heng, ZHAO Hongquan, AI ChunmingTest Research10-13,174Study on Coal Seam Water Infusion Technology in Fully Mechanized Coal Face of Qipanjing MineGUO Hua, WANG Haiqiao, ZHOU JiTest Research14-175Overpressure Prediction of Gas Explosion Shock Wave in Excavation Roadway of Coal MineLIU Tao, JIA JinzhangTest Research18-20,296Study on Distribution Characteristics of Coal Reservoir Pressure near Normal Fault in Central Shizhuang South Block of Qinshui BasinLI Zhiheng, NI Xiaoming, LI ZhongchengTest Research21-24,297Research on Coal Reservoir Characteristics in Pingdingshan Coal Mining AreaZHANG Jinjing, QIAO Wei, CHEN YutaoTest Research25-298Experimental Study on Fire Extinguishing Characteristics of Water Mist in Simulation TunnelSHI Jingtai, REN Wanxing, ZHAO QiankunTest Research30-33,399Research on Catastrophe Mechanism and Model Construction of Floor Water InrushZHU ZongkuiTest Research34-3910Study on Fracture Position of Main Roof above Gob-side EntryLIU XunTest Research40-4411Study on Influence Law of Coal Permeability Anisotropy on Gas Pre-drainage in Mining SeamYAN Zhiming, ZHANG Xiang, WANG Liang, LIU AngTest Research45-4812Research and Application of Dry-type Dust Removal System for Fully Mechanized Rock Roadway Development in Coal MineXIE JunshengDevelopment and Design49-5213Design and Application of Horizontal Continuous Pulping Machine for Coal Mine Fire Prevention and ExtinguishingLI ShangguoDevelopment and Design53-5514Optimization Design on Dewatering Method for Power Generation with Coal Mine GasLINGHU LeiDevelopment and Design56-5815Application of Damage Variable in Floor Failure Depth Calculation during Coal MiningLIU Qimeng, LI Pengfei, ZHANG Huanhuan, CHEN XiuyanTechnical Experience59-6316Application of Super-high Pressure Hydraulic Slotting Technology in Exposing Hard Outburst Seam in Crosscut for Outburst Prevention by Gas Pre-drainageLIU Shenglong, ZHOU Yuzhu, QIU Jude, RAO Zi, SONG RunquanTechnical Experience64-6717Prediction and Analysis on Surface Subsidence Control Effect with Fly Ash Paste Filling in Coal Mining under BuildingsHE Rongjun, ZHANG Tianmo, LUO DayongTechnical Experience68-71,7518Study on Fine Electromagnetic Wave CT Detection with Large-aperture and High-resolutionYAN Guocai, XIAN Penghui, LUO HaoTechnical Experience72-7519Study on Surface Subsidence Law of Inclined Seam Mining in Mountain Area with Base Rock ExposureWANG Qichun, BAI Wenjuan, GUO GuangliTechnical Experience76-8020Application of Comprehensive Geophysical Prospecting Technology in Working Face under Safe Water Pressure of AquiferQU ShaoboTechnical Experience81-85,92 