1Discussion on the new development and utilization of underground space resources of transitional coal minesLIU Feng, LI Shuzhi2205-22132Research status and prospect of metal element mineral resources in ChinaNING Shuzheng, DENG Xiaoli, LI Congcong, QIN Guohong, ZHANG Jianqiang, ZHU Shifei, QIAO Junwei, CHEN Lei, ZHANG Wei2214-22253Mechanism of flying gangue-caused disasters in longwall mining of steeply dipping seamWU Yongping, HU Bosheng, WANG Hongwei, XIE Panshi, LIU Ming, LIU Mingyin2226-22344Numerical simulation method for stope underground pressure in whole process of longwall miningXIA Binwei, GONG Tao, YU Bin, ZHOU Lei2235-22445Safety mining evaluation of middle abandoned coal seam in "upper pillar-lower longwall" composite mining areasFENG Guorui, GUO Feng, BAI Jinwen, ZHANG Yujiang, QI Tingye, GUO Jun, ZHANG Min, KANG Lixun2245-22536Theoretical study on roof movement and abutment pressure distribution of longwall panel with 8.5 m mining heightDI Shuai, WANG Jiren, SONG Guijun2254-22617Mechanical analysis on the stability of surrounding rock structure of gob-side entry retainingLI Yingfu, HUA Xinzhu2262-22698Fracture regularity of thin plate model of main roof with elastic foundation boundary for backfill miningXIE Shengrong, CHEN Dongdong, GAO Mingming, SUN Yanding, WU Jingke, ZHANG Tao2270-22799Rock mechanical properties experiments with low-frequency circulation disturbance under different stress amplitudesLIU Tao, YANG Peng, L(U) Wensheng, DU Kun2280-228610Generalized analytical solution to steady-state temperature field of double-circle-piped freezingHU Xiangdong, FANG Tao, HAN Yanguang2287-229411Research and application of high strength steel fiber concrete compound shaft lining with inner steel plate in deep alluvium shaft repairYAO Zhishu, CHENG Hua, JU Xianbo2295-230112Study on dynamic stability of dump slope based on the dissipation of pore pressureMIAO Haibin, WANG Jianguo, FEI Xiaoou, HAN Meng2302-230613Test of V shaped groove structure against rockfall based on orthogonal designTAO Zhigang, ZHU Chun, HE Manchao, PANG Shihui, XIE Xing, LAI Hao2307-231514Disaster-causing mechanism of compound dynamic disaster in deep mining under static and dynamic load conditionsYIN Guangzhi, LI Xing, LU Jun, LI Minghui2316-232615Mechanism of dynamic phenomena of borehole for outburst prediction and their relationship during coal roadway drivingWANG Chaojie, YANG Shengqiang, JIANG Chenglin, YANG Dingding, LI Xiaowei2327-233616Practice of permeability enhancement through overall hydraulic fracturing of long hole in outburst-prone soft crushed coal seam with low permeabilitySUN Siqing, ZHANG Qun, YAN Zhiming, ZHANG Jian, WANG Yongwei, ZHENG Kaige2337-234417Investigation on damage laws of loading coal samples under cyclic cooling treatmentLI Hewan, WANG Laigui, ZHANG Hao, ZHANG Chunhui, ZHOU Hao, GENG Yanyan2345-235218Mine gas hydration kinetics in coal based on impedance methodZHANG Qiang, WU Qiang, ZHANG Hui, ZHANG Baoyong, LIU Chuanhai2353-236119Effects of oxygen concentration and heating rate on the characteristics of bituminous coal combustionWEN Hu, HUANG Yao, ZHANG Yutao, LI Yaqing2362-236820Oxidation characteristics of unloaded coal under different initial stressPAN Rongkun, CHEN Lei, YU Minggao, XIAO Zejun, FU Dong, CHEN Junjie2369-2375 