1Experimental Study on Mechanical and Permeability Characteristics of Water Injection Coal SampleZHOU Xiaohua, WANG Rui, XU Hao, SONG XiangTest Research1-52Study on the Permeability of Gas-bearing Coal under Mechanical VibrationSONG Yang, WU Beining, ZHU BairuTest Research6-10,153Application Research on a Pulsed Water Jet Slotting for Coal Roadway ExcavationKOU JianxinTest Research11-154Influence Factors of Wettability of Coal Sample in Liupanshui,GuizhouSONG Jiwei, PENG Yangdong, SHI Yanping, CAI Jihua, JIANG GuoshengTest Research16-19,235Numerical Simulation Study on Coal Pillar Setting at Fault Sun in Longdong Coal MineHUANG Kai, WU Jiwen, ZHAI Xiaorong, HAN YunTest Research20-236Simulation and Experimental Study of Coal Mine Radio Wave Perspective Detection of Wash ZoneLIANG QinghuaTest Research24-277Formulas of Radius and Temperature for Heat-regulating Circle Based on Steady Heat ConductionDU Cuifeng, BIAN Menglong, HE Shaobo, WANG JinboTest Research28-338Numerical Simulation Analysis of Influencing Factors of Gas Drainage in Beizhuang Coal MineZHAO XinTest Research34-38,429Research on Reasonable Sealing Depth of Bedding Drilling Borehole in Tucheng Coal MineJIANG ZezhaoTest Research39-4210Design and Application of Safeguard System for Coal Mine Gas OxidationXIONG Yunwei, XIAO ZhengDevelopment Design43-46,5111Design and Implementation of Mine Rescue Medical Emergency Training System Based on 3D Virtual SimulationLIU Xiong, LI Haiyang, JIANG XugangDevelopment Design47-5112Construction and Demonstration of a New Model of Professional Technical Service for Coal Mine SafetyZHOU Jun, ZHANG ZhigangTechnical Experience52-5613Prediction of Mine Frictional Resistance Coefficient Based on BP Neural NetworkWEI Ning, LIU JianTechnical Experience57-6014Analysis of the Influence on Deep Rock Roadway Fault to Impact Ground PressureLIAO ZhihengTechnical Experience61-6415Stress Field Zoning and Length Optimization Design of Pressure Relief BoreholeZHAO Jian, ZHENG Zhiyang, LIU LeibinTechnical Experience65-68,7316Characteristics and Ecological Risk Assessment of Heavy Metal Pollution of Soil in Yili Mining AreaHU Feng, WANG Xinglei, LIU Shihui, LIU GongbinTechnical Experience69-7317Experimental Research on the Difference of Miners' Safety BehaviorKOU MengTechnical Experience74-76,8018Fire Zone Isolation and Its Effect Analysis in Shajihai Coal B6101 Working FaceCHEN Minghe, SONG ChunxiangTechnical Experience77-8019Measurement and Error Analysis of Sensor Frequency Signal Based on High Order Harmonic AnalysisLU Biao, ZHANG Mingming, ZHANG Yuanzheng, ZHOU ChuanyunTechnical Experience81-8520Stability Analysis of Ventilation System in Guangning Yanghui Coal MineJIA Jinzhang, SONG Lei, FENG LuyangTechnical Experience86-89 