1Analysis of mine pressure behavior characteristics in the period of gateway exca-vation of variable width coal pillar in fully mechanized caving face in extra-thick coal seamCHEN Xiangqi, LI Huamin, WANG Shen, WANG Zuguang1-72Study on the damage range of liquid ammonia storage tank leakage diffusionWU Jie, LYU Pin, YUAN Xiongjun, PAN Xiaofei8-143Experimental study on evolution law of coal-rock fracture under triaxial compression creepWEI Guoying, WANG Zehua, JIA Tianrang15-214The Origin of calcareous concretions in the upper part of the Sunjiagou formation of Upper Permian in Yiyang area,western Henan province and its indicating significance to paleoclimateZHENG Deshun, QI Shuaishuai, YANG Wentao, WANG Yanpeng, LI Yu22-315Geotemperature-geopressure system and its distribution characteristics of Yuwang block in Laochang mining areaJIANG Xiuming, WU Caifang, ZHANG Erchao, ZHANG SHasha32-376Analysis on forming conditions and exploration potential of unconventional gas in coal measures reservoir in Shanxi formation of Yongxia coalfieldXU Yakun, ZHANG Peng, WANG Kun38-467Application of L-M algorithm optimized gray model in GPS satellite clock error predicationYANG Chengwu, LIU Zhiping, XU Yongming47-528Research on object-oriented building information extraction methodHE Xiaolu, LIU Zhenhua, HU Yueming53-619Study on the extraction and separation of rare earth elements yttrium from the leaching of coal fly ashJI Wanshun, ZHOU Changchun, PAN Jinhe, CAO Shanshan, TANG Mengcheng, HU Tingting62-6810Research on semi-active fuzzy-PI control suspension of semi-complete vehicle based on particle swarm optimizationCHEN Guoqiang, LYU Shaobin, LI Gensheng, DAI Jun, YANG Zhifei69-7911Research on cutting performance of spiral drum of thin coal seam shearerTIAN Zhen, JING Shuangxi, ZHAO Lijuan, GAO Shan, ZHANG Chengguang80-84,10912Comparative study on four TMD vibration control simulation methods of wind turbine towerHUANG Zhuye, NI Ling, QIU Haofeng, WANG Zhenyu85-9013An industrial robot trajectory planning algorithm based on kinematics constraintsSUN Weiwei, WANG Han, HUANG Min91-9614Prediction of humanoid two-finger end-effector grasp type based on BP neural networkCHEN Xiaojing, PENG Peicheng, ZHANG Gaofeng, WANG Yuqing97-10215Research on harmonic suppression of matrix converter based on space vector modulationLI Changjiang, LIU Guangpeng, MA Xinghe103-10916Study on optimal routing path algorithm based on DE-PSOCHENG Xiaobo, SHANG Jiaze, AN Weipeng, LIU Yu, LIU Zhizhong110-11517Research and system design of early warning technology for safety accidents of young child being left on school busLIU Yongjun, PENG Hua116-12118Study on track and surface settlement caused by shield tunnel passing through railway box culvertDU Mingfang, ZHAO Wencai, JIANG Minmin122-12919Experimental study on grouting overlap of vertical reinforcement sleeve of assembled shear wallREN Hongwei, WANG Siyuan, YAN Shan, HAN Yutao130-13720Study on the dynamic early warning of subgrade slope based on IFOA algorithmZHU Jiajian, DING Longting, FU Linjie, WANG Xuancang, GAO Wenze138-144 