1Research on key construction technologies of vertical shafts for pressure pipelines in the gravel stratum of western regionsWU Weidong, ZHANG Jiwei, WANG Chuanbao, WANG Lingxiao, ZHANG Jiaxin1-10,162Study on microseismic monitoring and early warning technology for strong mining pressure in Hudi Coal MineDAI Xiaoliang, SUN Jianwei, ZHAO Shuai, LIU Fayi, ZHANG Hao11-163Research on rock burst prevention and control of near goaf side roadway in gently inclined coal seamCAO Liping17-22,444The practice of measure ramp method constructed crushing chamber in complex geological conditionsZHOU Xinqing, LIU Rongle, FAN Zhonghua, ZHANG Chunhu, ZHAO Yonghe23-27,505Application of wall grouting and pipe fixing method in water plugging construction of large flow gushing pointWANG Sulong28-306Numerical simulation study on influence of three-roadway excavation sequence on stability of roadway groupSUN Fulong, LI Yongyuan, ZHAO Qingquan, ZHOU Wenbin, JIANG Qi, WU Bin31-387Research on pre-cracking and pressure relief technology of the removal channel of the fully mechanized mining face of deep buried strong ore pressureLIU Fayi, DAI Xiaoliang, ZHAO Shuai, HAN Zhenfei39-448Application of ground directional drilling pre-grouting shield roadway crossing fault fracture zone technologyLI Lian'gang, TU Lei, XIE Jian, NIU Madou45-509Research on diversified real-time linkage system of reaming drill bits in raise boring machineLIU Zhitong51-56,8710Research on erosion resistance of nano-modified cement-based grouting materials in acid environmentHAN Guoqing, WANG Xiaojian, MA Changlong57-6111Research and application of ultimate mechanical behavior law of drilling under impact fracturingCHENG Shiyi62-6512Analysis of knowledge map of regional governance of coal mine in China in 21st century based on CiteSpaceLI Weiqi, LI Pengyang, SUN Xiaoyu, AN Xuliang, WANG Chao, HU Decun66-7213Study on non-uniform stress characteristics of steel plate-reinforced concrete drilling shaft wall in Inner Mongolia and Shaanxi mining areaJING Guoye, YIN Jun, HAN Bo73-8214Research on the influencing factors of the evolutionary patterns of circular freezing temperature fieldsGUO Changgong, GAO Wei83-8715Research and development of standardized construction training system for bolt(cable)support based on virtual reality technologyPENG Yanghao, WANG Rui, PENG Zhenjie, MA Qingshui, HAN Wei88-94 