1Study of Fitness Flow Pattern Design for Curved Diffuser of Mine Main FanPAN Di-lin, CHENG Xiao-dong, ZHENG Chang-qiu1-42Influence of Microspore Structure of Coal on Coal Seam PermeabilityZHANG Xing-hua4-73Explosive Pressure Testing in Degree of Safety Test of Explosive Inflammable GasZHANG chun-yu8-104Application of Multi-Methods for Gas Drainage in Xiaoming Coal Mine11-145Gas Disaster and Prevention in Hancheng Mining AreaGAO Rong15-186Characters of Gas Emission before Coal and Gas Outburst and Selection and Application of Forecast Indexes in No.10 Coal Mine of Hebi Mining GroupLIU Yan-wei, LIU Ming-ju, WU Gang-sheng18-217Applying Pressure-sharing Ventilation Technology to Control Gas in Fully-Mechanized Sublevel Caving Faces of Edge Thick SeamYANG Yong-qing, SHI Chao22-238Measuring and Analyzing Oxygenation Law of Coal Seam in the Period of Withdrawing in Fully-Mechanized Sublevel Caving Faces24-269Application of MEA New Type Fighting Fire Material in NO. 4 Coal Mine of Hebi Mining Group27-2810Comparative Analysis of Atmosphere State Parameter at Cool Around in Fully-Mechanized Coal FacesXIAO Zhi-guo, DAI Guang-long, LI En-bo29-3111Ventilation and Gas Management in Plough FacesNI Cheng-wu31-3312Improvement of Performance Test Methods of CO2 AbsorbentLI Zeng-hua, JIANG Shu-guang, SHAO Zhan-bin34-3613Roof Comprehensive Controlling in Breakage Faces of Medium- thickness "Tri-Soft" SeamQIAO Qing-huang, ZHU Ying-jiang36-3814Development of Infrared CO2 Sensor for MineMA Li-juan39-4115Application of Fan-stoppage Methane-monitor Breaker and Probing into the ManagementSONG Xian-ming, ZHENG Fang-fang, YANG Jia-we41-4316Preliminary Discussion on Power Safety of Coal EnterpriseZHANG Shu-jiang44-4517Attention Several Questions about Mine Feeder Switch UsingYANG Wen-zhong46-4718Division and Management of Gas Abnormity Emission Danger Zone in Lower Gassy MineCHEN Jie, FENG Jie48-5019Probing into Methods of Rock Burst Prediction in Laohutai Coal MineLIU Zhi-zhong51-5320Escape Route Optimization Algorithm in the Environment of Mine DisasterCHEN Jin-guo, ZHU Jin-fu54-56 