1Numerical Simulation of water-conducting collapse column Hazard Source Effect in Coal Seam Floor Based on GMSWANG Jingming, ZHAO Yafei1-82Study on the development height of “two belts” of 12# coal roof in Linxi MineJIANG Tao, CAO Penghui, TIAN Wuzi, YU Han9-153Research and Application of the Index and Critical Value for Gas Pre-drainage in High Gas Heading FaceLIU Yimeng16-194Analysis of mine dust hazard based on DEMATELXIE Hong, WEI Tong20-235Experimental study on flotation effect of new collector for coking coalXI Peng, LI Xiaodong, ZHANG Yan, JIA Jianxi, LI Yuanjun, WANG Xiaowei, WANG Mengfan24-276Mechanical Analysis of Local Block Fall and Supporting Measures of Roadway RoofFENG Jicheng, SHI Jianjun, ZHANG Fengyan, SHI Haoyu, GUO Shuying28-357Research on Intelligent Charger for Mine Power Lithium BatteryDENG Yonghong, ZHANG Yang36-408Study on safety planning of oil and gas pipelines based on accident consequence and risk analysisYAO Zhiqiang, MA Shihai, ZUO Zhe, GAO Jindong41-469Study on ventilation law and exhaust effect of permanent ventilation system in underground cavern groupYANG Jianlin, WANG Bo47-52,7310Comparison of BP and RBF Neural Networks in Fault Diagnosis of Motor Rolling BearingsLING Biaocan, YANG Jiabin53-5711Research and Design of Bidirectional DC/DC for Battery Charging SystemQIAN Huifa, ZHANG Quanzhu, DENG Yonghong58-6212Algorithm Research on Mine Dust Detection SystemZHAO Zimei, ZHANG Quanzhu63-6713Analysis and Research on Regenerative Braking Energy Absorption Scheme for Urban Rail TransitZHANG Quanzhu, LI Yuanhong, DENG Yonghong, MA Hongmei68-7314Research on building slope stability evaluation system based on cloud modelPAN Yu, CHEN Zhongyuan74-7915Experimental study on mechanical properties of rebar sleeve grouting splicesLIU Yang, ZHANG Lihua, ZHU Qinghua80-8616Study on sampling plan by variables for project quality inspection with standard deviation unknown based on random sampling simulationSU Qingpao, YANG Yalin, WANG Jinhua, WANG Jianmin87-9217Research Progress of Heavy Metal Treatment Technology in Acid DrainageLUO Xin, Ao Yanhuan, YANG Yixin93-97,11118Analysis of coal mine accidents cause based on PCA in henan provinceHUANG Jiguang98-10219Problems and Countermeasures of the supervision of mine emergency rescue teams in ChinaZHANG Yangyang, MA Hanpeng, LIU Kai, WANG Yumeng103-11120Primary Study on Campus Emergency Response Ability of Typical Safety MattersYAO Rongrong, MA Hanpeng, WANG Yumeng112-116 