1Research on gas migration law in goaf of U-shaped ventilation faceDONG Tai-hua, LIU Na, ZHU Chuan-jie, WANG Jun-chao, LIU Qian, LI Long, ZHANG Zhi-yuanQuestion Discussion1-4,92Study on type selection of supports in continuous working face of middle thick seam in Xiaojihan Coal MineDUAN Hong-feiQuestion Discussion5-93Research on adaptability of two-pillar shielded top coal caving support under fully-mechanized caving mining in shallow seamXIE Yu-jingQuestion Discussion10-154Research on the influence of high drainage roadway layout on the gas drainage effect in goafZHAO Ruo-pengQuestion Discussion16-18,275Analysis on the status quo of green mine research in ChinaLI Cong-ranQuestion Discussion19-236Research on prediction of floor heave of soft rock roadway and support countermeasuresLI Chen-xuQuestion Discussion24-277Research on installation and maintenance management of coal mine electromechanical equipmentCHENG WeiQuestion Discussion28-308Research on map matching algorithm based on the movement trajectory of underground peopleKANG NingQuestion Discussion31-34,399Research on influencing factors and correction compensation of desorbable gas contentZHANG Dong-xuQuestion Discussion35-3910Research and design of coal mine fully-mechanized mining automation systemWANG LeiExperimental Research40-4211A new distributed integrated cooling system for underground mineWANG LeiExperimental Research43-4612Numerical simulation analysis of the control effect of paste filling parameters on strata movementLIU Jian, ZHU Xiong, XU Lei, ZHANG SongExperimental Research47-5013Optimization of design scheme for coal pillar working face in main roadwayZHU Ai-huaExperimental Research51-53,5714Research on real time monitoring system of high voltage switchgear based on ARMJIA XinExperimental Research54-5715Study on gas monitoring system of local fan in coal mineLI Ze-pengExperimental Research58-6116Coal body anchoring performance test and roadway supporting parameters design in coal mineHU Pei-longExperimental Research62-6617Comprehensive prevention and control technology of spontaneous combustion in goaf of coal mining faceZHANG He-shengSafety in Coal Mines67-68,7218Fault diagnosis and analysis of electric haulage shearerWANG ZhiSafety in Coal Mines69-7219Application of directional high pressure hydraulic fracturing and erosion prevention technology in hard roofZHU Yan-feiSafety in Coal Mines73-7520Water disaster control technology and effect investigation in working faceDONG Yi-pengSafety in Coal Mines76-78 