1Research on Relationship between Strata Behavior and Gas Emission in Working Face with Large Mining HeightBI Jian-yi1-52Study on Hydrogeological Structure of Neogene in Liliangdian Mining AreaYAN Jia-dong, XU Zhi-min, ZHANG Qing-yan, LIANG Ying, JIANG Hao, XIE Yu-fei5-93Analysis on Main Concealed Disaster-causing Geological Factors in Guojiahe Coal MineCAO Jia, SUN Qing-kui, REN Chao10-134Testing Research on Effective Influencing Radius of Hydraulic Cutting in Floor Drainage Roadway of High Gas Thick Coal SeamYE Chuan, SHI Hong-miao, ZHU Chuan-jie, WANG Zhi-jian, ZHANG Chao, ZHANG Yong-bin, LIU Chao14-175Research on Stability Control of Surrounding Rock in Coal Winning Roadway in Isolated Working FaceCHAI Jian-ping18-206Optimization of Centralized Control and Management Systemfor Underground Part VentilatorGUI Junhao, HUANG Youhe, JU Mingwei21-237Analysis and Comparison of Parameter Extraction Methods for Porous Pumping TestZHAO Dan-yang, JIANG Zhi-hao, JIANG Zhen, HU Xin-meng, WU Xing-qi, SUN Ya-jun24-278Elastic Mechanics Modelling and Experimental Analysis of Static Characteristics of Disc Spring Force Sensor for Mine Hoist Disc BrakeZHAO Xin-ping, XU Gui-yun28-319Numerical Simulation Study on Distribution Characteristics of"Three Zone"Height in Goaf of Fully- mechanized Caving FaceWEI You-sheng32-3510Analysis on Pressure Characteristics of Freezing Wall in Jurassic StrataMA Qian-kun, DU Sheng, Lyu Lin35-3711Main Parameters and Process Research of Over-winding Oxidation Zone by Using Wedge MethodWANG He-long38-4012Study on Design of Retaining and Supporting Scheme for Narrow Filling Wall of Gob-side Entry RetainingZHANG Qi, SHEN Ya-nan41-4313Research on Floor Heave Prevention and Control Technology of Large Span Mining GatewayDing Xianfei, Peng Zhitao44-4714Modeling and Motion Analysis of Hydraulic Support in Extremely Thin Coal SeamGUO Tian-jun48-5015Technology and Application of Dynamic Identification of Rock Burst Hazardous Areas and GradesHAN Fu-sheng, LIAN Hong-quan, WANG Gui-feng, YUAN Xiao-yuan, TENG Wei, WEI Jinlu51-5416Research and Application of Wireless Communication Control Device in Coal Mining FaceREN Jian-li55-5617Construction Technology of Repairing of Return Air Downhill inⅡ63 Mining Area of Hengyuan Coal MineSUN Liang, QIN Wan-yu57-5918Design of Underground Automatic Speed Measuring and Retaining FenceHUO Wei-gong60-6119Research and Application of Turbine Cold State Quick Start Heating TechnologyZHAO Qiang62-6420Development and Application of Anchorage Force Detection Device for Coal Mine Anchor CableSUN Hai-ying65-66 