1Study on safety of underwater mining in working face 5105 of Wujiagou Coal MineSUN Yong1-6,272Feasibility analysis on integrated development of Hecaogou No.1 and No.2 Coal Mine in Yuantungou Mine FieldGUO Jian-nan7-103Research on multi-information early warning analysis of mining face in No.12 Mine of Pingdingshan Coal Industry Co.,Ltd.YANG Wei11-144Study on deformation characteristics of ground fissures in thick loose layer of first mining face in Jinjitan Coal MineHE Guo-wei15-185Source analysis and prevention measures of water in coal mine roof accidentsSUN Xiao-lin19-216Study on evaluation of outburst elimination effect in evaluation area of coal winning faceFAN Li-jun, LIU Tian-yu22-247The development of complete set electrical enterprises and the practice of intelligent manufacturing of secondary conductorWANG Jian-bo, CHEN Jun-ming25-278Study on influencing factors of fully-mechanized top coal caving recovery rate in large dip soft and extra thick coal seamLI Wei-liang, JIA Zhan-yong28-309Analysis on pore structure characteristics of tectonic coal and its influence on gas occurrenceHOU Rui31-3410On reform of mixed ownership of state-owned enterprises in new era:taking Xukuang Group as an exampleZHUANG Jian-wei35-36,3911Safety production must be combined with knowledge and practiceSUI Hao37-3912Discriminant on key stratum in coal overburden based on microseismic monitoringYUE Dong, LIU Chao, YUAN Zeng-yun40-4313Experimental study on generation law of coal spontaneous combustion gas under high ground temperatureLI Wen-fu, SONG Zhan-hong, MA Xiao-hui, MA Bo-tao, LI Hong-jie44-4714Experimental study on the inhibition of coal spontaneous combustion by complex inhibition of ascorbic acid and rosmarinic acidZHENG Teng-jiao, DI Yan-li, SHEN Hao-yang48-5115Study on optimization of bolt supporting parameters in high stress roadwayLIU Sen52-5416Hydraulic pre-splitting roof cutting test of 10 coal composite roof in Sanjiaohe Coal MineSONG Xiao-chao55-5717Study on technology of raising mining upper limit in first West mining area of Zhangshuanglou Coal MineLI Nan-jun58-6018Study on theory of mine fault advance wave equation and acoustic wave fieldZHANG Yi-yao61-63,7519Experimental study of effective radius of ultrasonic propagation in gas dranage boreholesZHUANG Xiao-wei, HUA Ming-guo, ZHANG Lei64-6720Technical and economic analysis of small coal pillar mining in isolated islandHUANG Zhi-dong68-70 