1Study on Particle Size of Coal Sample Measured by Dynamic Image MethodLONG QingmingTest·Research6-92Experimental Study on Pore and Adsorption Characteristics of Coal Samples of Bulianta MineYANG Xiaobin, CHEN Xi'ang, WANG Tengjiao, ZHANG LihuiTest·Research10-133Comparison Research on Methane Adsorption Property of Soft and Hard Coals in Dongqu Coal MineXING Meng, FU YongshuaiTest·Research14-174Numerical Simulation of Stress-seepage Coupling of Pre-extraction Gas in Surface WellZHANG Bao, HUA Mingguo, LI Jianwei, FU Guoting, YAO BanghuaTest·Research18-215Study on Fracture Evolution Characteristics of Coal Rock at Different Thermal Fracture TemperaturesLI Jianghua, XUE Chengzhou, HAN QiangTest·Research22-25,296Experimental Study on Influence of SDS Solution on Wettability and Grain Size Distribution of Impact Crushing Dust Production in AnthraciteWANG Lilong, KANG Jianting, KANG Tianhe, YIN RuibinTest·Research30-377Study on Water-conducting Fracture Height of Shallow Buried Coal Seam with Thick Loose Bed and Thin Base RockCHEN Hui, CAO Qijia, WEI Zhao, ZHANG DongdongTest·Research38-41,468Influence of Coal Quality Index on Maximum Pressure Rise Rate in Coal Dust ExplosionJING Guoxun, PENG Le, BAN TaoTest·Research42-469Study on Dynamic Evolution Process of Negative Pressure Influence of Crosscut on Oxygen Concentration Field in GoafCHEN Liangzhou, QIAO Shi, QI Xuyao, LI Xuewen, JIAO Gengxin, JI Youcang, BAI Chengwu, CHEN Liang, SONG RunquanTest·Research47-5110Field Test Study on Supporting Technology of Granular Retaining Gangue by Cutting Roof and Retaining Roadway in Thick Coal SeamLI Shuai, WANG Hongyu, WEI Qinglong, HOU ShilinTest·Research56-5911Research on Deformation and Failure of Coal Rock Based on Unload/Load Response RatioZHANG Juan, WU Di, ZHANG YuanTest·Research60-6312Grey Correlation Analysis of Vibration Reduction Effect of Damping Ditch Based on Model ExperimentDUAN Baofu, GONG Weizeng, ZHANG Xuewei, SHEN Shizhan, SUN KebinTest·Research64-68,7413Paste Filling Technology and Its Application in Fully Mechanized Caving Mining Under AquiferJIAN Yong, WANG Chao, ZHOU You, ZHANG Yanxu, LIU TaoTechnology·Innoation84-8814Research on Rock Burst Laws and Prevention in Deep Hard Roof Coal Seam MiningZHAO Meng, ZHANG Xiaoming, WANG Nan, SUN Huaiming, SU Renyuan, TIAN XinyuanTechnology·Innoation89-9315Study on Applicability of Filling Type Pressure Relief Rigid-flexible Coupling Support Technology in Deep High Stress RoadwayWANG Jie, REN JieTechnology·Innoation94-9816Construction of Virtual Mine Simulation Platform Based on VR TechnologyWANG Peng, SU Guorui, JIA Baoshan, LIANG MinghuiDesign·Development122-12517Personnel Identification and Early Warning System for Comprehensive Excavation EquipmentWANG Tingming, LI Pengpeng, SUN Baohai, CAO LianminDesign·Development126-12918Underground Wireless Stress Monitoring System Based on WaveMeshMA Yuehao, ZHANG Wenjian, GU Qiang, YU Fangzhou, DUAN Qiuyu, ZOU LiDesign·Development130-13319Rigid Tank Path Fault Location Technology Based on Machine Vision and Laser FusionMA Tianbing, WU Qiang, WANG Xinquan, WANG Xiaodong, LIU JianDesign·Development134-13720Current Situation and Prospect of China Open-pit Mines Truck DispatchingBAO Haiming, ZHANG RuixinDesign·Development141-144 