1Adsorption Characteristic of Coal and Distribution Rules of Pore of CoalZHANG Zhan-cunTest and Research1-32Experimental Study on Index of Methane Transient Diffusion Velocity and It's Critical Value in Least Outburst PressureFu Xiang, CAO Yao-lin, YANG Hong-wei, WANG Zhi-QuanTest and Research4-63Condition Improvement of Anti-deflagration Test for Coal Mine Permisive ExplosiveZHANG Chun-yu, GONG Qi-xiangTest and Research7-94Gas Prevention Technology in High Yield and Efficiency Baode Coal Mine in Shendong Coal CompanyYOU Wen-shun, QI Zhong-liTechnology Experiences10-135Application of Virtual Reality on Major Accidents Investigation and Analysis in Coal MineTechnology Experiences14-186Ventilation System of High Yield and Efficiency Open-underground Combined Mining in Anjialing Coal CompanyZHANG Zhong-wen, WU Ji-nan, YANG Hong-minTechnology Experiences18-207Study on Prediction of Spontaneous Combustion Danger of Full-mechanized Sublevel Caving Face in DongRong NO.3 Coal MineTechnology Experiences21-238Practice of Sand Injection Explosion Suppression in Treatment of Explosion Fire DistrictCAI De-fangTechnology Experiences24-269Reason Analysis of Spontaneous Combustion of 21 Coal Seam in NO.5 Coal Mine of Hebi Coal Group and Comprehensive Prevention and Controlling TechnologyTechnology Experiences27-2810Technology of Advance Detection by Electric Method and Accurate Detection of Water Geologic StructureTechnology Experiences29-3111Underground Direct Spread Digital Wireless Communication System in Coal MineLU Fan-xing, ZHANG Gan-yuan, LU Yi-minTechnology Experiences32-3312Application of Underground Wireless Communication System in Xiaonan Coal MineZHOU Hao, CUI JiTechnology Experiences34-3613Application of 2BZ-40/12 Type Impulse Coal Seam Water Injection PumpMENG Zhao-jun, YAN Shi-hua, ZHAO Zheng-junTechnology Experiences37-3914Application of Gob Side Entry Retaining Technology in GatewayXU Zhang-baoTechnology Experiences39-4115Application of Bolting Mesh and Anchor Cable Supporting Technology in Swelling Soft Rock RoadwayWANG Zhen-dong, ZHENG Guo-chun, WANG Feng-longTechnology Experiences42-4416Genesis, Hazard and Controlling of H2S in Coal Mine GasIssue Discussion45-4717Risk Appraisal of Gas Explosion in Coal MinesIssue Discussion48-5018Probing into Sensitive Index and It's Critical Value for Prediction of Coal and Gas Outburst in Daning Coal MineIssue Discussion51-5319Analysis of Gas Emission Phenomena after Rock Burst in Deep Coal Seam and PreventionWANG Xiao-mingIssue Discussion54-5620Probing into Gas Emission Rule in Driving Face in Luning Coal CompanyHE Ming-xin, ZHANG Zhan-cun, ZHANG Lian-faIssue Discussion56-58 