1Infrared Spectrum Study on Significant Gas Produced by Coal Spontaneous Combustion for Shendong Mining AreaLU Wei-dong, WANG Ji-ren, DENG Cun-bao, SHAN Ya-fei, HONG Lin, DENG Han-zhongTest and Research1-3,62Study and Application oF Techniques for Detection and Measurement of Temperature Information Related to Spontaneous Combustion Zone in Coal MinesWU Yu-guo, WU Jian-ming, WANG Jun-fengTest and Research4-63Dust Suppression Technology by Medium-length Hole High Pressure Water Injection in 17228 Fully-mechanized Mining Face in Zhangji Coal MineLI Ping, WANG Bai-shun, LI Shou-qinTechnology Experiences7-84Effect Investigation of Gas Pre-drainage by Consequent Parallel Holes in NO.8 Coal Seam of Baode Coal MineWANG Quan-longTechnology Experiences9-115Application of Negative Pressure Secondary Dust Suppression Device of Shearer in Fully-mechanized Mining FaceTechnology Experiences12-136Application of Gas Pre-drainage Technology in 5103 Working Section of NO.2 Draft in Meihe Coal MineTechnology Experiences14-157Comprehensive Controlling Gas Depending on Scientific and Technological Progress in Jiaozuo Mine DistrictZHAO Xing-qiTechnology Experiences16-188Practice of Methods for Gas Content Calculation by Gas Emission Quantity in Daping Coal MineYIN Qiu-chao, ZHANG Xiao-dongTechnology Experiences19-229Gas Content Prediction of Coal Seam Based on Genetic Neural NetworkZHANG Li-qingTechnology Experiences23-2510Application of Control Chart in Validity Appraisal of Gas Controlling Measure in Working FaceLIN Chuan-bing, LIN Bo-quan, WU Hai-jinTechnology Experiences26-2811Comprehensive Controlling Technology for Underground Fire Hazard in Tucheng Coal MineCHEN HuaTechnology Experiences28-3012Air Leakage Determination of Goaf by Comprehensive Analysis Methods of Gas Emission from GoafZHOU Cheng-junTechnology Experiences31-3313New-style Hermetic Wall with Rapid and Colloid Explosion Protection for Coal MineTechnology Experiences34-3514Application of Nitrogen Gas Pressure Regulating Technology for Explosion Fire District ControllingTechnology Experiences36-3715Optimization Design of Working Face Depending on Scientific and Technological ProgressYU Hong, LIU Jian-bin, WANG Shu-youTechnology Experiences38-4016A New-style Spherical Anchorage DeviceZHOU Hui-ying, MA Bao-anTechnology Experiences40-4217Bolt and Anchor Cable Combined Supporting Technology for Roadway of Automatic Plough FaceTechnology Experiences43-4518Examination Methods of Braking Moment of Open Gear Driving Hoisting WinchZHU Long-huiTechnology Experiences46-4719Design of I2C Keyboard Display Interface of SensorTechnology Experiences48-5120Application of Automatic Object Event Capture Mechanism in Coal Mine Safety Management SystemLI Xiao-gang, YANG Ji-dong, ZHANG Chun-mingTechnology Experiences51-53 