1Research on joint support technology of anchor mesh cord and steel belt in waist lane of thick coal seamWANG Yanliang, YAO Xinyu, MA Yaorong, LIU Ning1-62Research on segmented downward grouting technology in broken andesitic basalt stratumCHEN Zhenguo7-123The application of digital design in the construction of frozen shaft excavation and liningZHAO Wen, WANG Chao, HE Lihui, ZHENG Yongbo13-174The support technology for the roof of coal mine excavation tunnels passing through fractured zones of the strataLU Xuegong18-215Practice of retaining coal pillar and surrounding rock control in goaf roadwayMA Fujun22-25,466Research on ground area grouting treatment at Pingmei Shenma Liangbei No.2 Coal MineZHAO Litao, ZHAO Guangmiao, WANG Jinzhao26-337Safe construction technology of TBM for hard rock excavation under complex geological conditionsYANG Feng34-408Optimization research on gas extraction technology from drilling holes in extra thick coal seamZHANG Hongjie41-469Quantitative determination of key parts of surrounding rock prone to instability in deep soft rock roadwayJIANG Dengshun, PENG Cheng, ZHANG Jiawei47-5110Research on a coal cutter bearing fault diagnosis method based on LCD-SVDWANG Yong, SUN Xiaoyu, LI Heng52-55,8911Simulation analysis of rubber cement stabilization gravel dry shrinkage based on Fick's diffusion lawHAN Yanji, FENG Changbiao, LI Zhihao, DAI Guangwei, GUO Shiteng56-6112Overall impact mechanism of isolated coal in deep topsoil fully mechanized caving facePAN Xiaozheng, ZHENG Hongwei, KONG Zhen, ZHOU Guangfei, YU Chunyu, GAO Xu, SONG Shuhao, FANG Lue62-6713Several issues in the design of ammonia refrigeration for western shaft freezingXU Shurong, WANG Jianping, YANG Minghong, WANG Heng68-7314Numerical simulation and field application research of new drilling tools for fractured formationsCHEN Lixin, ZHANG Xin, MAN Donghui, MA Liang, ZHANG Peng, ZHANG Li, LI Deming, LIAN Xingwei80-8915The design and simulation of a dual-fluid grouting automatic mixing systemPAN Zeming, LIU Ningning, SHI Yanming, WANG Feng, ZHAO Lei90-94 