1Experimental on Desorption and Seepage of Gas in Low Permeability Coal SeamMA Yu-lin, ZHANG Yong-li, CHENG Yao, LI Cheng-quan, ZHANG Meng-taoTest and Research1-42Study of Effect on Bore Enlarging by High-pressure WaterjetXIE Zheng-hong, WANG Yao-feng, DUAN Dong, YAN Bin-yi, WANG Hai-dongTest and Research4-73Analysis of Coal Mass Gas Pressure and Intrinsic Gas Energy near Coal Caving Mouth during Primary Caving Period of Fully Mechanized Caving MiningXIA Yong-junTest and Research8-10,154Establishment and analysis on hydrological geology conception models of water-resisting key-stratumLI Chun-yi, CUI Xi-min, YUAN De-bao, HU Qing-fengTest and Research11-155Application of Gas Drainage Technology that Drainage Gas while Driving in Gassy Half-coal Rock TunnelingTANG Shou-pingTechnology Experiences16-186Application of Nitrogen Production by Membrane Separation and Pressure Swing Adsorption underground Coal MineWEN Yong-yanTechnology Experiences19-20,237Fire Extinguishing Technology with Composite Gel Applied to Control Mine Spontaneous Combustion in Changing Open-cuteLI Yan-zeng, CHEN Xi, ZHANG Xin-haiTechnology Experiences21-238Application of polyurethane Composite Materials Positive Pressure Fan Drum in Rock Driving Face by BlastingLU Ru-lin, LI Jin-junTechnology Experiences24-259Application ,of Polymer Water Plugging ,Agent in coal MireTechnology Experiences26-2810Application of Three-dimensional Seismic Inversion Technology in Delineation of Magmatic Rock Intrusion Area in Oulonghu Coal MineHONG Huang, WU Su-zhen, LIANG Kun-zhuTechnology Experiences28-3011Forecasting Borehole Track Based on Information Fusion with Demspster-Shafter TheoryZHANG You-zhenTechnology Experiences31-3312Prediction System of Mining Subsidence Based on MATLABTechnology Experiences34-36,3913Application of Displacement Real-time Monitoring System for Deep RoadwayTechnology Experiences37-3914Achievement of Power off Controlling Allopatry in Branch Layer of Coal Mine Safety Moni-toring and Controlling SystemMA Li-juanTechnology Experiences40-4215Integrated Application of Coal Mine Safety Monitoring SystemWANG Shi-binTechnology Experiences43-4616Frequency Control System of Mining Air Compressor Based on PLCZHAO Xue-hua, HU Yong-jun, CHEN Li-bingTechnology Experiences47-5017Research and Application to Emergency Communication of People in Underground MineTechnology Experiences50-5318Portable Oxygen Concentration Mine Detector Based on Web platformLI Wen-feng, CHU WeiTechnology Experiences54-5519Application of PLC in Electric Control System of Mine AC HoistLIU Hu-baoTechnology Experiences56-5820Program Design on PC of Underground Mine Personnel position Location System Based on KingViewHE Fei, DUAN Li-hua, WANG Yu-fengTechnology Experiences59-61 