1Numerical Simulation Study on Influence of Gas Drainage by High-level Boreholes on Spontaneous Combustion of Residual CoalWANG Zheng, LI ZongxiangTest Research1-52Leaching Test and Study of Mine Solid Wastes in Hancheng Mining AreaWANG Nianqin, DU Ruizhi, FENG Bantong, ZHANG KunTest Research6-9,133Test on Carbon Dioxide Permeability in Coal SeamXU Jiajun, CHEN Yulong, JIANG Chengrong, LIU Changgeng, ZENG ChenghuaTest Research10-134Study on Overburden Movement and Strata Behavior Law in FullyMechanized Face in Thick Coal Seam with Large AngleWANG ChangmingTest Research14-185Experimental Study on Acoustic Emission of Coal and Rock under Seepage-creep Coupling ActionLI PengTest Research19-236Interrelative Analysis on Physical and Mechanical Indicators of Rock underFreezing and Thawing Cycle ConditionTIAN Yanzhe, XU ShuanhaiTest Research24-277Simulation Study on Flue Gas Circulating Utilization in Gas Regenerative Oxidition UnitZHU Jing, LAN Bo, XIAO ZhengTest Research28-318Experiment of Distributed Optical Fiber Technology in Mine Temperature MeasurementXU Baochao, ZHAI Enfa, XU Shiang, CHENG Aiming, GAO YinguiTest Research32-36,429Fuzzy Calculation Method for Rational Supporting Intensity of Powered Support in StopeBAI JinyanTechnical Experience37-4210Gas Emission Rule and Its Control during Hard Roof Periodic Weighting in Full-mechanized Caving MiningZHANG Zhigang, ZHANG Feng, SHI WeizhanTechnical Experience43-46,5211Design of Shell-and-tube Heat Exchanger in Waste Heat Refrigeration Project of Coal-bed Methane Power GenerationLAN Xiangyun, WEN Guangcai, XIAO LuTechnical Experience47-5212Research on Deformation Law and Surrounding Rock Control of SoftRock Roadway in Gently Inclined Coal SeamGAO YunfengTechnical Experience53-56,5913Gas Occurrence law and Separating Source Control Technology in Wuhushan Coal MineWANG ZhenTechnical Experience57-5914Monitoring and Early Warning Technology for Rock Burst in Working Face with Hard RoofLIU YuexinTechnical Experience60-6315Calculation Model of Gas Pre-drainage Radius by Boreholes and Analysis on Its Application EffectWU JiaokunTechnical Experience64-67,7216Study on Sealing Effect of a New Pressurized Grouting and Hole-sealingGas Pressure Determination TechnologyYIN Hongjie, WANG BaishunTechnical Experience68-7217Data Acquisition Method of Gas Content in Wulan Coal MineMA GuolongTechnical Experience73-7518A Quick Hole-sealing Device for Fire Stopping in Mine Fire AreaHUANG Wenxiang, CHEN Jingang, CHEN Yutao, MU AnbinTechnical Experience76-7919Analysis of Roof Water Inrush Hazard Based on Borehole Hydrological Monitoring InformationQIN ChengTechnical Experience80-84,8920Safe Drilling Technique for Boreholes with Both Gas and Water Inrush in Coal MineLIU Jie, LI KaiwanTechnical Experience85-89 