1Numerical simulation study of failure loading rate effect of coal-rock specimens based on CT scanningREN Yang-huiQuestion Discussion1-62Research on working performance of bolts (cables)during gob-side roadway excavation with large buried depth and small coal pillarsDU Yong, ZHANG Ji-hua, FENG Xu-yangQuestion Discussion7-12,183Research on optimization of coal caving technology in fully-mechanized caving face of extra-thick coal seamYANG Hai-ge, HE PengQuestion Discussion13-184Investigation and research on the width of roadway pressure relief belt based on drilling stress methodYAO Xue-qing, GUO Yan-feiQuestion Discussion19-23,285Study on comparison and optimization of super absorbent materials for underground grouting in coal mineWANG Mian, HUANG Ji-lei, WANG Shi-jie, ZHOU Yin-boQuestion Discussion24-286Research on overlying rock movement and deformation control of low-level top coal caving technology in small pillar working faceLEI MingQuestion Discussion29-357Current situation and prospect of mine permanent sealing technologyBAO Xiao-qing, LIU Sun, MA Xu, GAO Lei, SHI Guo-qingQuestion Discussion36-41,468Research on coal seam spontaneous ignition characteristics under the influence of erosion structureYAO Qi-long, WU Chang-yanQuestion Discussion42-469Study on airflow field of Y-shaped ventilation under different air leakage preventionWANG Jiong, LYU Bang-guo, GONG Wei-li, CHEN XuExperimental Study47-53,6710Design and research on the broken rope catcher for overhead passenger deviceLI Ming-hang, HOU Zing-qing, SONG Bo, ZONG Shu-guang, LIU Qiang, ZHANG Hong-wei, ZHAO Yan-fangExperimental Study54-5811Design and application of hydraulic support top beam and cover beam maintenance platformMEI RuiExperimental Study59-61,6712Research on optimization of roadway support in working face under the condition of shallow burial and deep thin bedrock and soft rockSHANG Yu-qiang, XU Xing-liangExperimental Study62-6713Simulation of grouting diffusion in fractured rock mass based on Monte Carlo algorithmSUN Xing-ping, CHEN Jian-ben, HOU Jun-you, LUO Yong, LIU Jing-yi, YANG Zhan-biaoExperimental Study68-7414Research on image processing function design of wire rope tension monitoring systemZHAO Xin, FENG Jing-peiExperimental Study75-78,8215Study on supporting design of cavern group in 1000 m deep mineZHANG LeiExperimental Study79-8216Causes and prevention techniques of rock burst in complex geological working facesCHEN Qing-guo, Yin Zi-ting, MOU Zong-long, JIAO Jian-xing, WANG Zhan-shuo, LI Zhong-xiao, LIU Guang-jianCoal Safety83-8917Fault diagnosis model of mine electromechanical auxiliary equipment based on data flowZHAO Zhen-guoCoal Safety90-93,9918Safety risk identification assessment and countermeasures in Baidong Coal MineZHANG Run-taoCoal Safety94-96,9919Application of directional drilling overburden technology in driving faceLIU Jian-hua, ZHAO Hua-junCoal Safety97-9920Research on comprehensive fire-fighting technology for delayed demolition of 7201 working face in Zhangshuanglou Coal MineDUAN Xiao-ping, WEI Lian-jiangCoal Safety100-103 