1Evaluation of water inrush danger from coal seam floor based on EW-IAHPFENG Yan-fei, WU Peng, SU HuiQuestion Discussion1-62Deformation characteristics and numerical simulation of high stress stoping roadwayCHEN Ze-nian, XU Jing-guo, ZHANG Peng, GUO WeiQuestion Discussion7-123Optimization of well location for pressure relief gas surface well based on overlying strata characteristicsTONG Chuan-xia, LYU Hong-li, HAO Wei-guang, WANG BoQuestion Discussion13-194The shape and development law of karst collapse column in Tunlan MineLIU WeiQuestion Discussion20-25,305Design and application of passive optical fiber remote intelligent monitoring system for mining roofTIAN Feng, SONG Jia-jiaQuestion Discussion26-306Reliability research and energy-saving optimization design of underground rainage system in Tongxin Coal MineSONG Xin-xiQuestion Discussion31-34,387Finite element analysis of belt conveyor driving drum driven by permanent magnet motorYU Xin-tingQuestion Discussion35-388Spatial structure analysis of overlying rock in isolated island working face of 520106 working faceGUO Xing-hui, GUO Ji-lei, GUO Yao, CHAI Er-yao, YANG ChenQuestion Discussion39-43,599Low power equipment and application of near horizontal directional drilling technology in coal mineWEI Hong-chaoExperimental Study44-47,5310Experimental study on the migration mechanism of coal oxidized mixed gases in coal pore structureYU TaoExperimental Study48-5311Research and application on "Three plugging and two injection"sealing process in layer-through boring of single coal seam on bottom extraction roadwayYAO Xue-qing, XUE Wen-tao, ZHAO Qing-hongExperimental Study54-5912Research on underground transportation mode and equipment selection in Wenjiapo Coal MineZHANG Peng, WANG Lei, LIU Zheng-huiExperimental Study60-63,6913Application of feeder coal flow control method in Huating Chicheng MineWANG Bo-junExperimental Study64-6914Research and application of remote control pneumatic fire door in coal mineZHANG Yong-anExperimental Study70-7315Simulation study on influencing factors of gas drainage and optimization of hole layout parametersXU Jing-cang, NAN Jing-jing, LIU Bin, YANG Yong-liangCoal Safety74-8016Research and application of gas control technology in rock roadway heading face of outburst mine when encountering structural zoneSU Long, ZHU Hong-hao, ZHANG Xin-xin, LIU Zhi-longCoal Safety81-85,9017Application of comprehensive gas control technology in high gas coal mining face of medium thick coal seamGAO Xian-cheng, SUN Jiang-tao, Zhang Jun-hu, YANG Dong-guang, GAO Yu-jun, LI BinCoal Safety86-9018Optimization and application of ventilation system in fully-mechanized coal faceHAN Dong-xuCoal Safety91-93,9719Research on optimization of coal mine safety monitoring system based on neural networkLI Cheng-xiangCoal Safety94-9720Research on advanced anchoring coupling supporting technology of mining roadwayWEI Yun-bo, ZHU Qian-chengPractical Technology98-104 