1Review on research of butterfly failure theory and its applicationLI Jun, MA Nianjie, WANG Weijun, REN Jianju, LIAN Xiaoyong, MA Zhenkai209-2282Effects of confining pressure on failure mechanism of porous and weakly cemented rock and compaction-damage constitutive modelMIAO Shengjun, YANG Pengjin, HUANG Zhengjun, WANG Hui, LIANG Mingchun229-2403Separation and fracturing mechanical models of overlying hugely-thick conglomerate stratum in fully mechanized caving mining and their applicationZHAI Xinxian, ZHAO Xiaofan, ZHAI Yanwei, QIAN Hongliang, LIU Qinyu, REN Zhu'an, GUO Zhaoyang241-2544Experiments on stress corrosion behaviors of rock bolt in highly-mineralized mine waterCHU Xiaowei, JU Wenjun, LU Zhiguo, SHI Meng255-2665Experimental on the effect of block fracture on pendulum-type wave propagation in block-rock massWANG Kaixing, WU Shaohong, PAN Yishan, DOU Linming, WANG Xuebin267-2756Creep characteristics and fractional order constitutive model of cemented backfill under high and low stress levelsCHENG Aiping, FU Zixiang, DENG Daiqiang, DAI Shunyi, HUANG Shibing, YE Zuyang276-285,2997Optimal layout methods of underground mining-backfilling space in deep mineYUAN Yong, ZHU Cheng, WANG Wenmiao, CHEN Zhongshun, LIANG Xiaokang286-2998Microcrack evolution law and interaction mechanism of coal with multiple cracksWANG Lei, SHANG Ruihao, LIU Huaiqian, ZHU Chuanqi, CHEN Lipeng, FAN Hao, LI Shaobo, ZOU Peng300-3139Temporal and spatial characteristics of raw coal deformation during the adsorption of CH4/N2 under triaxial stressLIN Haifei, JI Pengfei, KONG Xiangguo, LI Shugang, CHEN Chen, YANG Songrui314-32810Inhibition effect on the ignition and flame propagation characteristic of methane explosion by N2/ultrafine water mistPEI Bei, LI Shiliang, WEI Shuangming, KANG Yaxiang, PAN Rongkun, LU Chang, JING Guoxun329-34111Tensile failure characteristics of coal after the cyclic cold shock of liquid nitrogenCHEN Aikun, ZHAI Cheng, CONG Yuzhou, SUN Yong, ZHENG Yangfeng342-35312Evaluation of horizontal well differential development effect in tight sandstone gas reservoir:A case study of Sulige gas field,Ordos BasinCHENG Minhua, MENG Dewei, WANG Lijuan, JIANG Qianfeng, WANG Guoting, ZHAO Meng354-36313Effect of different modulus sodium silicate on flotation behavior of scheeliteWANG Chao, ZHU Yimin, LIU Jie, HAN Yuexin364-37114Mechanisms of the effect of sodium carbonate on the dispersion behavior of chalcopyrite and molybdeniteSHAO Yanhai, WU Weiming, CHEN Tao, TANG Yue, YE Guohua, JIAN Sheng, TONG Xiong372-37915Enhancement of coal slurry conditioning flotation using jet-stirring coupling flotation deviceHAN Youli, WANG Xing, ZHU Jinbo, ZHU Hongzheng, WANG Po380-388,41616Effect of flotation preparation of ultra-low ash coal based on BPMA predictionPEI Weiwei, MA Xiaomin, FAN Yuping, DONG Xianshu, LI Fan, XING Huijuan389-39617Synergy of drying and separation of fine lignite in pulsed gas-solid fluidized bedCHEN Zengqiang, YANG Lei, ZHAO Guangxin, XI Tong, ZHU Fenglong, DUAN Chenlong, DONG Liang, ZHAO Yuemin397-40518The effect of Ca2+substitution on crystal structure and surface properties of kaolinite:A DFT studySHU Qingdong, MIN Fanfei, CHEN Jun406-416 