1Experimental study on the propagation and attenuation laws of stress waves in coal under high-pressure gas impactCHU Huaibao, REN Zhiqiang, YAN Song, ZHU Siyuan, CHEN Zhen, YE Hongyu, YAN Shaoyang1-62Research on high-efficiency gas drainage technology of drilling,hydraulic punching, hole protection integration hydraulic pressure relief screen pipe protection holeXU Yanpeng, YANG Wanli, LI Haitao, WU Xinwen, WANG Binrong, ZHANG Hao7-123Study on grouting reconstruction technology of aquifer in coal seam roofHUANG Beihai, LUO Shaohe13-204Deformation and failure laws of deep roadway excavation near a faultCUI Wei, CUI Feng, PAN Xiahui, ZHANG Boyang21-295Study on stress distribution and dynamic response characteristics of explosion-proof door under the action of gas explosion impactMA Shangzhen, WEN Xiaoping30-34,436Analysis of public health emergency place reserve system under the background of epidemic outbreakWANG Yixin, BAI Sanjun, LI Xianghai, GOU Wenjuan35-437Study on subsidence law of coal surface under combined action of adjacent mining in deep mountain areaYAN Weitao, ZHANG Chaohui, CHEN Zhen, CHEN Junjie44-508Applications of 3 D laser scanning technology in the extraction of vegetation parametersYU Yang, LIU Changhua, WANG Shidong, DU Zhuang, CHEN Zhichao, ZHANG Pengpeng51-579Strategy for BDS multipath mitigation based on wavelet decomposition and sidereal filterYANG Wei, ZHANG Qiuzhao, MA Xiaodong58-6410Tailing pond extraction of Tangshan City based on Multi-Task-Branch NetworkZHANG Kunlun, CHANG Yuguang, PAN Jie, LU Kaixuan, ZAN Luyang, CHEN Zhengchao65-71,9411Evolution of river network system in the mountain excavation and city construction in Yan'an New DistrictXU Xiaolu, HAO Lina, LIU Hanhu, ZHAO Meiling, MENG Tian, JIANG Chuandong72-7912Effects study of prescribed burning on community structure and species diversity of Pinus yunnanensis forestQI Shuwei, CHEN Qibo, YANG Bo, YANG Jianguang, LI Jianqiang, HUANG Xinhui80-8813Study on the effect of ultrasonic excitation on the mechanical properties of micro-embossing PPDO vascular stentBIAN Pingyan, SHI Jiangong, WANG Yueyu, LI Yu, WANG Jianping89-9414Robot path planning based on improved informed-RRT* algorithmDAI Jun, LI Zhiming, LI Yanqin, ZHAO Junwei95-10015Study on durability of car trunk torsion bar based on test benchmarking methodCHENG Xueli, LU Zhicheng, AN Linchao101-10616Multi-classification recognition method of arc fault based on convolutional autoencoder networkLI Kui, ZHANG Dan, WANG Yao107-11617Direct instantaneous torque control strategy at 9 regions for reducing torque ripple of switched reluctance motorQU Ziyu, HUANG Chaozhi, CHEN Jun, LIU Xiping, LIU Wei117-12518An improved gravitational search algorithm for solving resource constrained project scheduling problemLIU Yongli, ZHANG Xiaoyang126-13319Research on tracking and prediction of rock fissure sevelopment based on improved Faster R-CNN algorithmHUANG Xiaohong, LI Tiefeng, LIU Xiangxin, LI Wei134-14120Research on horizontal bearing characteristics of CFRP composite piles in seawater erosion environmentZHANG Jianwei, FAN Yalong, YUE Jianwei, LI Rongxiang, WANG Hao142-148 