1Experimental Study on Gas-water Two-phase Seepage Characteristics of Water-saturated Gas-containing CoalWEI Le, WANG Dengke, LIU Zhiwei1-42Research on Spontaneous Combustion Tendency of Bituminous Coals in Different Metamorphic Grades Based on Activation Energy IndexZHANG Xinhai, BAI Ya e, LI Qingwei, MA Teng5-7,113Study on Plastic Water Glass Gel for Preventing Coal Spontaneous CombustionWANG Kaisheng, LU Wei, DU Yunfeng, ZHANG Qingsong, XU Jun8-114Experimental Study on Seepage Properties of Fractured Maokou LimestoneZHANG Ying, XU Hong, LI Ping, ZHANG Li, ZHAO Yuan12-16,255Experimental Research of Impact of Fine Water Mist on Antistatic Property of Non-metallic PipesXUE Shaoqian17-20,256Study on Dynamic Law of Surface Movement above Working Face of Shallow-buried Coal Seam with Thin BedrockWANG Jun, ZHAO Huanhuan, LIU Jingge21-257Research on Strata Behavior Characteristics of Nearly Shallow-buried Coal Seam with Large Mining HeightGUO Gaochuan, YANG Yongkang, JI Chunxu26-298Experimental Analysis on Section Coal Pillar Stability in Shallow-buried Seam and Its ApplicationZHANG Jie, HUO Junpeng, WANG Bin, LIU Dong30-339Mechanical Analysis on Design of Distillation Column Used in Low-concentration Coal-bed Gas Cryogenic Liquefaction DeviceCHEN Jinhua34-37,4910Simulation Study on Cryogenic Distillation Process of Low-concentration Oxygen-containing Coal-bed Methane Based on Aspen PlusMA Daihui38-4011Gray-Fuzzy Comprehensive Evaluation of Mine Gas Accidents Based on Hazard TheoryHUANG Dongmei, TAN Yunliang, CHANG Xikun, FU Yingxia41-4412Numerical Simulation and Analysis of Strata Behaviors in Dangerous Area of Deep Full-mechanized Caving Mining Face Adjacent to GobWAN Junjie, WU Xuesong, MAI Qiaoli, NAN Xiong45-4913Comparative Study on Application of High-pressure Spray and Foam Dust Removal Technology in Fully Mechanized Heading FaceLIU Tao, LAN Shuyuan, WANG Chunmei, LYU Erzhong50-53,5614Study on Gas Content Prediction Based on Least Absolute DeviationSHI Tianwei, ZHAO Zhongming, LIU Yongliang, Dong Wei54-5615Numerical Simulation and Site Measurement of Development Height of Fractured Zone in Overburden StrataLIU Weitao, CHEN Zhixing, ZHANG Maopeng57-6016Simulation and Optimization of Treatment Schemes for Mining-blocked Thick and Hard Rock StratumCUI Tiejun, MA Yundong, WANG Laigui61-6417Investigation of Gob Water Disaster-causing Factors and Its Control in Resource Integration Coal MineLIANG Qinghua65-68,7218Detection Analysis on Floor Failure Rule in Mining of Group B Coal Seams in Xieqiao MineFU Maoru, ZHANG Aihua, ZHANG Pingsong, WU Rongxin69-7219Research on Seepage Characteristics of Floor Fault Zone Based on Water Injection Test in Yangcun Coal MineSHAO Mingxi, GUAN Yunzhang, CAO Siwen, ZHANG Xin, LIU Jinguo, LYU Xianyang, SUN Xiaoqian73-76,8020Study on Ventilation System Optimization of Working Face with Gob-side Entry Retaining in Jining No. 2 Coal MineWANG Xuyou, WANG Liantao, TAO Weiguo, XU Zhenbo, HU Yilu, SONG Xiaolin77-80 