1Innovation and practice of ground production system joint layout for mines groupXIN De-lin, LIU Yan, FANG Xin-ying1-32Setting of refuge chamber in gentle-inclined auxiliary shaftZHANG Zhong-wen4-63Discussion on reasonable layout of fully mechanized top coal caving face in steeply dipping, unstable and loose coal seamYUN Dong-feng, ZHANG Yuan-hao, CHEN Guang-ping, WU Yong-ping, DU Rong-hua, LIU Zhu, LEI Qi, GU Bin7-104Research on slope parameters optimization during expansion and renovation for waste dump in Antaibao Open-pit Coal MineDING Xin-pin11-145Equipment selection design for quantitative belt conveyor loading system of large coal mine main vertical shaftCHEN Wei, QIN Xi-wen, RU Jia-hong15-17,206Closed renovation engineering design for load-store-transport system of Honghe freight stationYAO jia-yin18-207Practice of medium consumption reduction in Wangfenggang Coal Preparation PlantCAO Dao, LIU Yu-miao21-238Discussion on general layout method for coal mine industrial siteLI Ke24-26,309A review on high performance concrete for freeze sinking in deep alluviumGUAN Xue-mao, LIU Song-hui, ZHANG Hai-bo, ZHANG Jian-wu, LI Hai-yan27-3010Experimental research on gob-side entry forming with roof cutting pressure releasing under shallow depthYANG Han-hong, XUE Er-long31-33,3711Research and practice of broken shaft lining repairing and reinforcement in new auxiliary shaft of Dazhong Coal MineHUANG Xiao-dong, LI Pin-zhi, HUANG Chun-guang34-3712Study on cross-section form and support optimization in weakly consolidated soft rock roadwayHE Guang-liang, WANG Wei-ming, ZHANG Wei-she, LV Xian-zhou38-4113Control technology for roadway water drainage construction in strong aquifer with cataclastic rock massSUN Jing-tao, YANG Li-juan42-4514Improvement and the application of sealing technology for crossing hole in Songzao Coal MineYANG Ri-Li, ZHAO Xiao-Xia46-4815Reasons and countermeasures for drilling and mechanical injury accident of drilling rig in underground coal minePI Xi-yu, LI Tie, WANG Shuan-lin49-5116Practice of 4-level drilling gas drainage technology in Sihe MineZHAO Xue-liang, ZHANG Guo-liang, LUO Hua-gui, WANG Ning, SHANG Wei-wei52-5517Research on control technology and emission law of hydrogen sulfide in steeply dipping and extra-thick coal seamYAO Ya-hu, HUANG Zhong-feng, LIU Jun56-5918Strata behaviors of fully mechanized working face in first roof caving with hydraulic fracturing in Jinjie Coal MineLIU Hui-li, FENG Yan-jun60-62,6619Study on occurrence characteristics of karst groundwater in coal stratum roofSHI Xian-zhi, QIAN Zi-wei, LI Tong-wen, JIANG Zhen-quan, JIANG Ting63-6620Water drainage law in No. 8 coal seam roof of Donghuantuo Coal MineZHENG Yan, MA Ya-jie, ZHANG Chang-jiang, WANG Dong67-70 