1Analysis and Research on Hidden Dangers of Safety Production in Open-pit Coal MinesZHANG Ruixin, LI Jing, LI Zequan, WANG Yangting, QI Chunxue, HU Zhen, WANG Weixian, WU Qiangjie1-62Study on the Influence of Blasting Vibration on ConstructsGAO Wenjiao, XU Jiajun, XIA Fangshun, LIANG Junqi7-113Study on influencing factors of adsorption gas content of coal based on multivariate regression analysisLIU Bin, WANG Pengfei12-154Construction of Jinjiaqu coal mine's drainage system and application of purification processLV Zhaohai, ZHAO Changhong, PAN Changbin, LIANG Qifeng, YUE Xiaojun, GUAN Peng, LI Jinyun16-215Numerical simulation study on the motion law of carbon emission in iron and steel enterprisesZHANG Erhui, ZHU Quanjie, CHAI Haitao, ZHANG Zhen22-276Position Optimization of Coal Mine Surface Plant and Mine Shaft Using Analytical Hierarchy Process and R LanguageSHAN Yao, WANG Yilan28-327Effect of Crosslinked Clay on the combustion performance of rigid polyurethaneZHOU Xuan, YUE Lina, SUN Yingjuan, GAO Ming33-378Research on Small-signal Stability of DCMicrogrid in Voltage-droop ControlCHENG Yanjing, WANG Jun, GU Xiufan38-489Research progress on remediation technology of heavy metal pollution in mining areaLUO Xin, YANG Yixin, AO Yanhuan49-54,6210CiteSpace-based Research on the Present Situation of Community Geological Disasters Prevention and Mitigation in ChinaGUO Haotian, DING Mingtao, LIU Qiannan55-6211Secondary development of frozen soil creep model in ABAQUSCAO Wei, LI Wenjing, ZHANG Hongfen, DU Mengzhou63-6912Study on creep deformation of permafrost block stone roadbedZHANG Cungen70-8113Application of elliptical criterion parameter modelfor rock strengthWU Qiangjie, LIN Dachao, ZHANG Ming, LI Jing82-87,9414Simulation of Emergency Evacuation in University Buildings Based on BIM and PathfinderLI Boheng, CAO Rong88-9415Design and Analysis of a Fast Clamping Positioning MechanismZHANG Yingjie, CHEN Yanxia95-9716Fatigue Test of Workers' Upper Limb Muscles Based on ElectromyographyWANG Yue, LIU Yang, XU Mingwei98-10217Study on Influencing Factors of Coal Mine Safety Development in Shanxi Province Based on Factor AnalysisGENG Xingyin, LIU Haisheng, CEHNG Genyin, REN Qiang103-10718Research hotspots and development trends of emergency management——Based on the visualization analysis of knowledge mapLIU Jianzhun, TANG Peiwen, SHI Mi, LIU Chunlei, YAN Yaojun108-11419Analysis of Customers for Unmanned Supermarket——Based on data of 2018 survey in BeijingSHANG Hua, LI Qiangli, WANG Xiaoyuan, WANG Yan115-12020Grasping the Concept of Major Certification Promoting the Construction of Engineering MajorWANG Yonggao, SHI Haoyu, HAN yong121-124 