1Current status and prospects of research on geological assurance system for coal mine safe and high efficient miningPENG Suping2331-23452Framework and thinking of transparent geological conditions for precise mining of coalYUAN Liang, ZHANG Pingsong2346-23563An assessment of hazards to the risk-involved personnel in mine water disasterWU Qiang, YAO Yi, ZHAO Yingwang, ZHANG Xiaoyan, XU Hua, HAO Zhichao, DU Zhili, DU Yuanze2357-23664Prevention and control technology and application of roof water disaster in Jurassic coal field of Ordos BasinDONG Shuning, JI Yadong, WANG Hao, ZHAO Baofeng, CAO Haidong, LIU Yang, LIU Yingfeng, JI Zhongkui, LIU Baigen2367-23755Tectonic setting and risk zoning of dynamic geological disasters in coal mines in ChinaCAO Daiyong, ZHAN Wenfeng, LI Huantong, LI Xiaoming, LIU Demin, WEI Yingchun2376-23886Morphological and fabric characteristics of Karst collapse pillars in Xishan coalfieldZHAO Jingui, GUO Mintai, LI Wensheng2389-23987Lithofacies palaeogeography of lower coal group accumulation period of Carboniferous Permian in North ChinaLI Mingpei, SHAO Longyi, LI Zhixue, DONG Daxiao, LI Jingqin2399-24108Key elements and framework model of groundwater system in Jurassic coal measures of Ordos BasinJIAO Yangquan, WANG Shuangming, FAN Limin, WU Liqun, RONG Hui, ZHANG Fan2411-24229Further research on “water-richness index method” for evaluation of aquifer water abundanceZENG Yifan, WU Qiang, DU Xin, LIU Shouqiang, ZAN Juncai, DOU Guidong, WU Zhangtao2423-243110Water-richness evaluation of sandstone aquifer based on set pair analysis-variable fuzzy set coupling method: A case from Jurassic Zhiluo formation of Jinjiaqu coal mine in Ningdong mining areaHAN Chenghao, WEI Jiuchuan, XIE Daolei, XU Jianguo, ZHANG Weijie, ZHAO Zhichao2432-244311Characteristics and control technology of water inrush from deep coal seam floor above confined aquifer in Xingdong Coal MineWANG Pengpeng, ZHAO Yixin, JIANG Yaodong, ZHANG Cun, ZHANG Dangyu, YANG Junhui, LIU Wenchao, ZHAI Jiangpeng2444-245412Prediction of water inrush from floor based on GWO-Elman neural networkSHI Longqing, ZHANG Rongao, XU Dongjing, LI Yue, QIU Mei, GAO Weifu2455-246313Theoretical foundation of tensor measurement for mine resistivity methodYUE Jianhua, YANG Haiyan, SU Benyu, LI Fengping, LIU Zhixin, JIANG Zhihai, SONG Lei2464-247114Experimental study on joint inversion of water conducted karstic collapse column based on mine TEM and seismic explorationLI Fei, CHENG Jiulong, YANG Sitong, WEN Laifu, DONG Yi2472-248115High-precision inversion method of coal seam thickness based on transmission channel waveCUI Weixiong, WANG Baoli, WANG Yunhong2482-249016Integrated geo-steering technology of logging and orientation in deep coalbed methane horizontal wellSHEN Penglei, BAI Jianping, LI Guishan, L(U) Shuaifeng, JIA Jinsheng2491-249917Analysis of coal particles passing screen pipe and test of gas drainage effect in underground coal mineZHANG Jinbao, WANG Yi, YAO Ningping, JIN Xin, ZHANG Jie, WANG Li, CHEN Bin, MA Tengyue2500-250618Acoustic transmission system of measurement data while drilling in underground coal mineGAO Jun, LI Quanxin, CHEN Long, ZHANG Jiguan, LI Shan2507-251219Patterns and pilot project demonstration of coal measures gas productionQIN Yong, WU Jianguang, LI Guozhang, WANG Yingbin, SHEN Jian, ZHANG Bing, SHEN Yulin2513-252220Technology and equipment of sealed coring for accurate determination of coalbed gas content in ground wellSUN Siqing, ZHANG Qun, ZHENG Kaige, LONG Weicheng2523-2530 