1Study on optimizing grouting area base on tectonic stress methodYIN Shixian, ZHANG Gendong, LI Dehai753-7582The risk evaluation for goaf surface subsidence based on Rough setFENG Youli, LUO Qingwei759-7643Numerical simulation study of influence of loading rate on damage and acoustic emission characteristics of coal rockLI Xiaojun, LI Huigui, YUAN Ruipu765-7704Study on the coal mining working face spatial of gas concentration distributionLU Zhongliang, WEI Zhen, LI Yujiang, WANG Hongli771-7745The multi-stage adsorption characteristics of coals with different ranks under the condition of cryogenic liquid nitrogenZHANG Xiaodong, DING Zhe, WANG Bo, ZHANG Shuo775-7816Fuzzy comprehensive evaluation of the safety operational status of elevatorTAO Jie, ZHANG Guobao, HUANG Yongming, WAN Lin782-7887Numerical simulation analysis on stress of Baiping gliding structure belt in western HenanWANG Enying, LIU Du, LIAN Youxuan789-7958The technology of reduce the detection blind area depth andincrease the detection depth of transient electromagnetic methodCHEN Kuikui, WANG Xinyi796-8019VIRR image cloud detection based on image enhancement and comprehensive decision-makingQI Xiudong, YUE Jibo802-80910The algorithm of the velocity determination by using the Doppler shift measurements based on the total least-squaresLI Kezhao, WANG Yunkai, DING Anmin, LI Zhiwei810-81411Research progress about spatial data uncertaintyHU Shengwu, YU Xu815-82212Leaching characteristics of trace elements in the sintered brick made from coal gangue and fly ashWANG Mingshi, LIU Linyao, SONG Dangyu823-82713Study on cold roll-beating spline surface microcomic profile precisionWANG Xiaoqiang, HAN Kunpeng, CUI Fengkui, WANG Yu, LI Yan828-83414Investigation on the stall force of trans-rotary magnetic gear and its influence factorsZHANG Hai, ZHENG Guo, ZHANG Xiaodong, WANG Nannan, KONG Xinling835-84015The dynamic mechanical properties and constitutive model of 1020 steelXUE Jinxue, LING Yuanfei, CUI Fengkui, HAN Kunpeng, XIE Kege, WANG Yu841-84716A fault diagnosis method for bearing based on dual tree complex wavelet packet transform and 1.5 dimension spectrumZHAN Weiming, SHI Yan, WANG Jia848-85317Study on division point of electromagnetic wave propagation near-region in arched tunnelCHENG Lingfei, WANG Lichao, GAO Pengfei854-85718Simulation on trajectory tracking based on the fuzzy PID control for piezoelectric dispensing machineWANG Dongsheng, WANG Ying, WANG Geng, ZHAO Yanru, LI Changyou858-86119Key frames extraction of motion video based on prior knowledgePANG Yajun862-86820Analysis of crack propagation of holed-flattened Brazilian disc with particle flow codeDENG Qinghai, GONG Linxian, XUE Yongqiang, GENG Xuke, HU Shanxiang869-875 