1Numerical Simulation on Double Tailing Gateways Applied to Gas Control of Fully-mechanized Caving Mining Face with Extra Long Mining LengthWANG Cheng, YANG Sheng-qiang, XU Jia-lin, ZHANG Xiang-shanTest and Research1-42Three-Phase Foam Device for Controlling Spontaneous Combustion of CoalLIANG Xiao-yu, WANG De-ming, QIN Bo-taoTest and Research5-73Experiment Study of Burst Tendency of Coal and Rock Layers at Tangkou Coal MineLIU Zeng-ping, LIU Wen-ban, WU Long-quan, LU Shi-banTest and Research8-104Analysis on Key Factor of Surface Subsidence by Numerical Simulation in Replacement MiningFANG Lei, GUO Guang-li, ZHA Jian-feng, WU BinTest and Research11-135Numerical Simulation of Directional Fraction Controlled Blasting in RockYANG Ben-shu, JIANG Lin-lin, YANG Guo-liang, CHEN GangTest and Research14-16,196Application of Roadway-partition Drainage Technology for Outburst Prevention in Heading FacesWANG Xin, ZHANG Zhi-yu, LU Hai-longTechnology Expeiences17-197Gas Comprehensive Controlling in 3101 Face of Shangzhuang Coal MineNIAN Jun, HUANG Yu-xi, GUO Guang-mingTechnology Expeiences20-218Practice of Overlying Adjacent Coal Seam Gas Drainage by Lower BoreholeLI Rong-qiang, SHEN Zi-min, WANG Ju-shengTechnology Expeiences22-249Evaluation of Gas Pre-drainage Time Reasonably of 3' Coal Seam in Mazhai Coal Company Ltd.Technology Expeiences25-2810Using Measuring Radon Method to Detect Spontaneous Fire Location in Bayili Coal MineZHANG Xin-hai, NIU Heng, FEI Jin-biaoTechnology Expeiences29-3011Technology of Monitoring and Preventing of Spontaneous Combustion in Gassy Coal SeamsTechnology Expeiences31-3312Ways of Spontaneous Combustion Prevention during Long-term Stop Production in Gob of Full-mechanized Caving FaceZHU Da-zhi, XU HongTechnology Expeiences34-3613Thick Coal Seam Spontaneous Combustion Prevention and Controlling in Coal Pillar Recovery Full-mechanized Caving FaceTechnology Expeiences37-3914Technology of Gas Burning Prevention in BoreholeLI Gui-yunTechnology Expeiences40-4215Measurement of Water Prevention in Thin Bedrock Face and Practice of Safety MiningTechnology Expeiences43-4516Substance Exploring Application of DC Electrical Method to Head Working Face in Wangxingzhuang Coal MineWANG Goug-zhong, ZUO Qiu-lingTechnology Expeiences45-4717Application of Pipe Shed Support Technology Underground Donghuantuo Coal MineWANG YiTechnology Expeiences48-5018Study on Surrounding Rock Strata Behavior Regularity of Gob-side Entry RetainingLIU Yun-gang, YANG Wen-hua, SUN Quan-faTechnology Expeiences51-5319Wireless Card Reader Underground Coal Mine Based on ZigbeeLI Xiao-gangTechnology Expeiences54-5720Design of Intelligent Device for Coal Mine Flameproof Transformer Performance Detection and InspectionTechnology Expeiences57-59 