1The design idea and method of the bit structure and drilling parameters for shaft drilling based on mechanics-structure-energy coordination modelZHAO Yichao, SONG Zhaoyang, LIU Zhiqiang, WANG Qiang, JING Guoye, SUN Jianrong, WANG Yuan1-9,432Application and exploration of speedy drivage technology of carbon dioxide fracturing blastingZHEN Enze, DONG Shizhuo, Li Chen10-153Research on support selection technology for shallow buried close distance coal seam group working faceYAN Junjie, FAN Yu, SUN Lihui16-20,534Selection and design of sinking headframe structure based on super-large and ultra-deep shaftQING Wenkui21-265Design and application of curtain formed by single hole pouring concrete for water plugging and fire extinguishingLIU Chaohui, LI Jiaolong, CUI Yuping27-316Application of walking and trestle type formwork jumbo in frozen inclined shaft engineeringWANG Yi, WEI Guoqiang32-377Repair and treatment technology and effect of high-strength concrete shaft wall fracture in the main shaft of Guotun Coal MineSHEN Shibao38-438Research and application of comprehensive treatment technology of extraction and wind exhaust in low gaseous mineQIN Wei44-49,269Application of the construction technology of metro shield disassembling chamber in Xinjing Coal MineWU Zhiqi50-5310Research on integral structure reinforced arch of surrounding rock of underground siloQIANG Ding, FAN Yuehu, ZHOU Hongbo, JIA Xiyong, CAO Longbo, LYU Yang54-58,3111Model test study on efficiency of pressure gas reverse circulation shaft washing in large diameter shaft boring machineSONG Yang, CHENG Hua, GUO Longhui, RONG Chuanxin, WANG Xiaoyun59-6712Experimental study on reaming drilling rate and rock slag characteristics of raise-boring machine under different drilling parametersSONG Zhaoyang, CUI Zesheng, LIU Zhiqiang, LI Shuchen, LIU Richeng, WAN Zeen68-73,6713Simulation study on internal field monitoring of smart concrete based on electrical resistance tomographyYIN Leijian, XIE Fuxing, ZHAO guangsi74-8014Variable load analysis method for supporting beams considering temperature stress changes in drainage pipelinesZHAO Yuliang81-8415Method and application of belt failure detection for belt conveyor based on CenterNet algorithmWANG Zhenjun85-8916Design and application analysis of high support formwork for finger gate chamber in underground mineLI Hongwei, HE Lei, LI Muxiu, ZANG Jichuan, WEI Kaixin90-94,84 