1Study on Influencing Rule of Coal-bed Methane Predrainage by Boreholes1-3,102Study on Coal and Gas Outburst Characteristics in Heading Face Based on ChaosWANG Ya-jun, JIN Fang-yong4-63Analysis on Influence of Seam Permeability Variation in Heading Face on Gas EmissionHOU San-zhong, LIU De-min, LI Jin-ling7-104Study on Proppant Embedment and Backflow Control in Coalbed Methane WellGUO Hong-yu, SU Xian-bo, NI Xiao-ming11-12,155Trial Study on Treatment of Manganese Mineral Processing Wastewater with Coagulationand Optimal Hydraulic ConditionsSU Cheng-yuan, WANG Li-yuan, YIN Zhi-hui13-156Discrete Element Simulation of Development Law of Overburden Water Conducted ZoneMA De-peng, LUAN Yuan-zhong, MA Shao-jie16-187Application of Multi-object Decision Method in Cooling System Optimization of Zhaolou MineCHU Zhao-xiang, XIN Song, LUO Wei19-21,258Characteristic of Gas Distribution and Component of Gas Emission in 7802 Fully Mechanized Coal Face in Wuyang Coal Mine22-259Realization of Transformation and Sharing of Mine Spatial Data Based on FMEMA Gong-she, HUI Wei-yuan, YANG Yi-hui26-2810Determination of Prediction Method for Water Inflow in Working FaceLIU Yang, WANG Zhen-rong, NIU Jian-li29-30,3411Design of Mine Production Monitoring System Based on LonWorks Technology31-3412Evaluation and Control of Safety and Stability of Diagonal Branch in Complex Ventilation Network35-3813Development of Wireless Wagon-mounted Methane Alarm BreakerCAI Chong, YU Qing, WANG Yu39-4014Analysis and Calculation of Butting Loss of Monomode Fiber in Mine Communication SystemSHI Fa-qiang, WANG Huan, ZHANG Hua41-42,4515Study on Dynamic Analysing System for Ventilation SafetyWANG Lian-he43-4516Research and Application of Complex Control Technology for Rock Burst in Dangerous Bump Area46-4817Prevention and Control Technology for Rock Burst in 104 Heading Face of Junde Mine49-51,5818Geological Regularity of Coalbed Gas in Magmatic Intrusion AreaAN Hong-tao, KANG Yan-hua, SUN Si-qing52-54,5819Theory and Practice of Pillarless Mining of Protective Seam in Huainan Coal Mining AreaGANG Lin-tang55-5820Practice and Exploration of Complex Gas Control in Hebi Coal Mining AreaXU Wei59-61 