1Experimental Study on Influence of Moisture on Coal's Characteristic Temperature in Mengba MineLIU Wenyong, JIN Yongfei, DENG Jun, ZHAO Ruiyuan1-3,72Experimental Research on Structural Characteristics of Microscopic Pores of Coal ParticlesDAI Linchao, NIE Baisheng4-73Study on Floor Deformation and Failure Law of Deep Mining Coal SeamTANG Xin, JIANG Zhenquan, LEI Juan, LI Yanbin8-10,154Mechanical Analysis on Fault Water Inrush above Floor Confined AquiferPAN Rui, MENG Xiangrui, GAO ZHaoning11-155Study on Mechanical Properties of Roadside Filling Support Body with Strip-Net-Bolt Refuse BagsYANG Yongchen, YIN Bo, ZHAO He16-186Application Study on Cross-orientation Method of Groundwater Grey Numerical Model in Prediction of Mine InflowLI Shuwen, WANG Ping, ZHANG Changjian, WANG Zhanhui, GAO Ke19-22,267Numerical Simulation Analysis of Rock Bolt Stress in Deep Coal RoadwayXIAO Tongqiang, LI Huaizhen23-268Research on Mechanical Behavior of Surrounding Rock in Steeply Dipping Seam MiningMA Jinkui, LIU Jun, YUE Gaowei, TAN Ronghui27-309Design and Implementation of Low-power Coal Mine Wireless Monitoring SystemTANG Chaoming31-3410Research and Implementation of Location Technology Based on Improved RSSI Algorithm in Coal MinesCUI Lizhen, LI Lei, GAO Lili, CHEN Yangyang35-38,4211Experimental Study on Sealing Performance of Protective Sealing Door for Mine Refuge ChamberZHU Xianguo, ZHANG Guangxun, JING Tingting, JIANG Dexian39-4212Research on Noise Reduction of Mine Contra-rotating Auxiliary FanHUANG Xueman43-45,4913Research on Dust Suppression Technology for Concrete-spraying MachineGONG Xiaobing, ZHAO Caihua46-4914Design of Coal Mine Communication System Based on WiFi TechnologySHI Faqiang50-5215Acoustic Emission Prediction Technology for Coal and Gas Outburst in Torsion Structural Zone in Donglin MineKANG Jiandong53-55,5816Testing Method of Drilling Machine Based on Simulative Load TechnologyLIU Weiliang, LI Zhenjie, ZHANG Guofeng, QIN Gui, WANG Qiandong, YANG Yange56-5817Application of Gas Content Measuring Method in Determining Drainage Radium of Holes in Xinji No. 2 MineWANG Qi, GUO Shousong59-61,6518Application of Multi-parameter lithological Inversion in Limestone InterpretationZHANG Yabing, CHEN Tongjun, CUI Ruofei62-6519Study on Roof Caving Zone Height in 1304 Working Face in a Coal MineFU Jiaju, JIANG Zhenquan, ZHANG Yao, ZHU Ruijie66-68,7220Application of New Gas Drainage Hole Drilling Technology in Soft Coal Seam in Pingdingshan No. 10 MineFENG Dajun, KONG Wei, XU Shubin, XIAO Lihui69-72 