1Research on temperature effect and application of strength evolution of spray layer of wet spraying support of roadwayZHANG Yuhao, REN Lachun, YAO Peng, JIANG Deyi, LIU Wei1-122Experimental study on damage mechanism of banded magnetite quartzite under freeze-thawYAN Jiaju, SHAO Guoliang, XIA Dong, JIA Yufei13-233Study on anti-cracking properties of biopolymer-improved clay on open pit mine slopesQI Xiang, ZHOU Wei, WANG Zhile, LI Rui, TIAN Ya, TU Lixiao, ZHANG Zhiyuan, DONG Zhilong, YANG Huxiong24-324Integrated prevention and control technology of unloading pressure from boreholes and high-efficiency extraction for compound power disastersZHANG Xingrun, PAN Bojie, ZHANG Yongbin, HAO Fuchang, GAO Baobin, XI Zhiqi33-415Multi-branch horizontal well hole docking pressure control extraction technology for close distance coal seam groupCHEN Liang, CHENG Zhiheng, LUO Xin, YU Hongyang, ZHANG Zherui, WANG Peng, WANG Xiangdong42-566Study on key technology of combined pressure relief and permeability enhancement in low permeability hard coal seamZHOU Yujun, LI Zhenhua, LI Jiacheng57-657Experimental study on propagation attenuation characteristics of UWB electromagnetic wave in different coal and mixed mediaZHENG Xuezhao, HUANG Yuan, SUN Ziyu, GUO Jun, ZHANG Duo, CAI Guobin, TONG Xin66-758Distribution of unfrozen water and evolution of temperature-stress field during freeze-thaw of liquid nitrogen in heterogeneous coalQIN Lei, ZHANG Xian, LIN Haifei, WANG Weikai, LI Botao, WANG Pei, LI Shugang76-869Study on influence of coal seam water content on effect of CO2 isobaric diffusion displacing CH4CHEN Liwei, WANG Dongjie, BIAN Le, LIU Yuan, LI Xiaohua87-9610Study on evolution law of particle breakage after coal adsorption of CO2 under dif-ferent uniaxial compression stress conditionsDING Yang, WANG Mengdi, LI Shugang, LIN Haifei, ZHAO Hongchao, TAN Junhong, ZHANG Jingfei, ZHU Bing, ZHANG Yizheng, ZHANG Yan97-10711Testing and numerical simulation of mechanical behavior of drilled coal samples under uniaxial compressionJIAO Zhenhua, NI Zhihui, HU Hao, YANG Liwen, LI Rui, MA Jiabao108-11912Study on permeability mechanism of rough fractured coal considering slippage effectZENG Xingyi, LI Bobo, LI Jianhua, DUAN Shulei, DING Yunna, YANG Junsong120-12913Influence of natural weak surface on extension of multiple fractures during fracturing of gas extraction horizontal wellsPANG Tao, JIANG Zaibing, WANG Zhengxi, LIU Xiugang, LI Haozhe130-13814Experimental study on purification of low concentration coalbed methane by hydrate method under amino acid systemZHAO Tian, XU Yongliang, WANG Lanyun, LYU Zecheng, HUO Xingwang139-15015Analysis of permeability evolution law of gas-bearing coal under cyclic loading conditionWANG Dengke, FENG Haohang, WEI Jianping, CHEN Xu, JIANG Zhigang, YUAN Xiuzhu, BAI Yun, CAO Tanggen, XIONG Wenchao151-16416Experimental study on correlation between compressibility and permeability of on-load lignite pore structureMA Yankun, HU Mingye, ZHANG Xi, YANG Wenwang, YAN Zewen, ZHANG Zhen165-17217Heterogeneity and influencing factors of pore structure in different coal ranksZHU Yuewen, SHANG Fuhua, MA Shuwei, ZHANG Han, ZHU Yanming, WANG Meng, MA Yingying, LI Weiqing, FU Wending173-18218Current status and prospects of research on coal mine dust mist condensation and dust reduction efficiency enhancementJIANG Boyang, QI Yipei, ZHANG Jiayong, GUO Liwen, LI Jia, XIAO Yang183-20019Analysis of three-phase coupled dust reduction law of external spray in synthesized digging faceYU Haiming, WANG Peibei, YE Yuxi, CHENG Weimin201-21320Explosion characteristics and microscopic mechanism of long-flame pulverized coalLI Zhenbao, ZHAO Weichen, LI Chao, FAN Zichen, XIAN Liang, CHEN Mingneng214-222 