1Research on the crack development and gas emission law of the composite roof between coal seam and oil shale in very close distanceDONG Guo-wei, REN Xiao-liang, LIANG Xuan-ming, LIU Hai-yang, TANG Zhao-chengSpecial Manuscript1-62Optimization of support parameters for rapid excavation under hard roof conditions in Jining No.3 Coal MineGUO Xian-wei, ZHANG Yun-ning, BAI Bing, YUE BoQuestion Discussion7-14,203Field measurement and analysis on the evolution of the surrounding rock loose zone of the bottom-drainage roadway in Xuehu Coal MineSHEN Run-sheng, LIN Shu-mao, SUN Chang, LU YanQuestion Discussion15-204Research on sedimentary environment of Jurassic No.5 Coal Group in Yangjiacun MinefieldGUO Xian-shunQuestion Discussion21-245Construction scheme of warehouse trestle and transfer point in Xiaozhuang Coal MineWANG Long, WANG Li-wei, ZHANG PeiQuestion Discussion25-28,366Research on movement and failure laws of overlying strata in road-by-road filling miningSHI Bin, ZHANG BiaoQuestion Discussion29-327Research on dynamic simulation test of circulating water in a thermal power plantPAN MingExperimental Study33-368Back analysis and optimization of foundation pit geotechnical parameters based on genetic algorithmYang Guan-yu, Mei JunExperimental Study37-40,489Research and application of underlying rock fracture development based on the influence of repeated mining in coal faceCHENG PengExperimental Study41-44,4810Research on the law of the underground pressure behaviour in the large mining height loose coal seam face in Zhulinshan Coal MineZHANG Xiao-pengExperimental Study45-4811Experimental study on separation effect of heavy medium cycloneLIU YingExperimental Study49-5112Application of high pressure water jet slotting pressure relief technology in mines with complex geological conditionsBAI Zong-rongCoal Safety52-5613Application of gas control technology in mining face of high gas mineFAN Yin-huiCoal Safety57-5914Thinking about prevention and control of goaf water in Sichuan coal mineSUN Xiao-linCoal Safety60-63,6615Analysis on effect of coal seam water injection and dust reduction by using gas drainage boreholesWU Pei-wuCoal Safety64-6616Study on determination of indicator gas index of spontaneous combustion in No.10 coal seam of Xinyan Coal MineHUANG XuCoal Safety67-7017Research and application of anti scour treatment technology in roadway excavation of large mining deep coal seamZHU Yan-fei, LUO Wu-xian, XU Da-lian, LI Bing, CAO Yuan-wei, DU Wei-qianCoal Safety71-7518Analysis on influence of coal seam occurrence conditions on rock burst risk in 1310 working faceLIU Qing-zhou, CAO Hai-tao, ZHAI Jin, HAN Zheng-can, ZHOU Bing, LIU Tian-wenCoal Safety76-80,8419Application of surface drilling fracturing pre drainage coal seam gas technologyWang Jin-boCoal Safety81-8420Determination of empty roof distance in shallow roadway excavation in Liangshuijing Coal MineZHOU Hu, LIU Si, DU Jiang, ZHONG De-yu, ZHANG Tong-tongCoal Safety85-89,103 