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 Yimeng16-194Experimental study on flotation effect of new collector for coking coalXI Peng, LI Xiaodong, ZHANG Yan, JIA Jianxi, LI Yuanjun, WANG Xiaowei, WANG Mengfan24-275Mechanical Analysis of Local Block Fall and Supporting Measures of Roadway RoofFENG Jicheng, SHI Jianjun, ZHANG Fengyan, SHI Haoyu, GUO Shuying28-356Research on Intelligent Charger for Mine Power Lithium BatteryDENG Yonghong, ZHANG Yang36-407Study on safety planning of oil and gas pipelines based on accident consequence and risk analysisYAO Zhiqiang, MA Shihai, ZUO Zhe, GAO Jindong41-468Study on ventilation law and exhaust effect of permanent ventilation system in underground cavern groupYANG Jianlin, WANG Bo47-52,739Comparison of BP and RBF Neural Networks in Fault Diagnosis of Motor Rolling BearingsLING Biaocan, YANG Jiabin53-5710Research and Design of Bidirectional DC/DC for Battery Charging SystemQIAN Huifa, ZHANG Quanzhu, DENG Yonghong58-6211Algorithm Research on Mine Dust Detection SystemZHAO Zimei, ZHANG Quanzhu63-6712Analysis and Research on Regenerative Braking Energy Absorption Scheme for Urban Rail TransitZHANG Quanzhu, LI Yuanhong, DENG Yonghong, MA Hongmei68-7313Research on building slope stability evaluation system based on cloud modelPAN Yu, CHEN Zhongyuan74-7914Experimental study on mechanical properties of rebar sleeve grouting splicesLIU Yang, ZHANG Lihua, ZHU Qinghua80-8615Study on sampling plan by variables for project quality inspection with standard deviation unknown based on random sampling simulationSU Qingpao, YANG Yalin, WANG Jinhua, WANG Jianmin87-9216Research Progress of Heavy Metal Treatment Technology in Acid DrainageLUO Xin, Ao Yanhuan, YANG Yixin93-97,11117Analysis of coal mine accidents cause based on PCA in henan provinceHUANG Jiguang98-10218Problems and Countermeasures of the supervision of mine emergency rescue teams in ChinaZHANG Yangyang, MA Hanpeng, LIU Kai, WANG Yumeng103-11119Primary Study on Campus Emergency Response Ability of Typical Safety MattersYAO Rongrong, MA Hanpeng, WANG Yumeng112-11620Design and Implementation of Online Forum Based on ASP.NETDU Qijun, GAO Ningan117-121 