1Test Research on Coal and Gas Outburst Hazard by Gay Classification MethodsLI Cheng-wuTest and Research1-42Experimental Study on Explosive Oxygen Concentration of Coal Mine Combustive GasesDENG Jun, CHENG Chao, WU Xiao-chunTest and Research5-73Study on Method of Ground Pressure Monitoring and AchievementXUE Guang-hui, CHEN Jie, SHANG Yong-gang, WU MiaoTest and Research8-104Research on Selective Leakage Protection Based on Zero Sequence Current DirectionGAO Jun-ling, WANG Qing-ling, ZHU Yong-meiTest and Research11-135Technology Practice of Water Injection with Short Boreholes in Coal Face of Hengyuan CompanyCHANG JianTechnology Experiences14-156Investigation of Gas Drainage Methods in Xuandong Mine CompanyTechnology Experiences16-197Determination of Variable Thermal Conductivity of Loose Coal Based on Hot-wire MethodHE Gang, ZHANG Guo-shu, CHEN Qing-huaTechnology Experiences19-218Forecast and Prediction of Spontaneous Combustion by Buried Penstock Sampling Temperature Measurement MethodsZHAO Hong-youTechnology Experiences22-249Recovery Scheme of Water Drainage in Complex Geological Condition Mining Area and ImplementationTechnology Experiences24-2710Technology of Sealing Ground Hydrologic Hole in Underground MineGE Jun-gangTechnology Experiences28-2911Application of Comprehensive Grouting Technology in Sealing Water Project of Auxiliary Shaft in Xiaokang MineSONG De-jun, LANG Yan-long, LI Bao-dongTechnology Experiences30-3212Application of Bolt-mesh-cable Combined Supporting in Coal Roadway of Steeply Inclined SeamCHANG Ju-cai, XIE Guang-xiang, WANG LeiTechnology Experiences33-3513Choice of Coal Pillar Width for Gob Side Entry Retaining in Complex ConditionWANG Gui-hu, HONG Wu, TANG Shu-minTechnology Experiences36-3714Taking Effective Measures to Improve Recovery Rate of Full-mechanized Mining SectionLIU Jian-bin, WANG Shu-youTechnology Experiences38-3915Application of Deep-hole Blasting for Rock Burst PreventionTechnology Experiences40-4216Manage System for Steel Wire Rope Safety UsingJI Qing-yaTechnology Experiences42-4517Gas Detection System Based on Electrical Modulation NDIR TechnologyLI Zhen-xinTechnology Experiences46-4818Composition and Function Realization of Coal Mine Safety Distance Monitoring and Controlling SystemYUAN Li, JIANG Wen-baoTechnology Experiences49-5119High Intensity and High Exhaustion Performance CO2 Absorbent LiOHMAO XinTechnology Experiences52-5520Performance Measurement System Based on USB for Mine Main Ventilator DeviceZHAO Man-qun, TANG Zhong-yu, ZHANG Xiao-chunTechnology Experiences55-57 