1Slope stability analysis based on limit equilibrium method in open-pit mineWANG Hai, WANG Moshu, LI Wei, DONG Junting, MA Jiwei1-3,82Necessity of ground production system extension and reconstruction in Shengli West No.1 Open-pit MineLIU Chao4-83Analysis and development trend of mining technology influencing factors in Open-pit Coal MineWANG Zhigang, CHEN Xingping9-12,164Study on floodway transference in Weijiamao Open-pit MineHAN Yichao, ZHANG Yonggui13-165Mining boundary and mining process adjustment in Anjialing Open-pit MineZHANG Gen17-20,246Analysis on mining technology program in Thar Open-pit Coal MineCAI Zhongchao21-247Research on mining continuous process and key equipments of scraper in Open-Pit MineLIANG Yuanyuan, SONG Bo25-27,318Research on mining process in Yimin No.3 Open-pit MineYANG Honghai, JIANG Wen, SI Guobin, GAO Nan28-319Optimization on dumping way and process of dumping machine in Baiyinhua No.3 Open-pit MineLV Kuan, LI Jingguo, WANG Shubing32-34,3710Research on bench delamination and mining method under the affect of residual waterLI Zhiqiang35-3711Multiple free surface delay subsection differential vibration reduction blasting techniqueGUO Qingchuan, WANG Jianxin38-40,4512Economic analysis of leaving ditch height between mining areas in adjacent open-pit minesZHANG Ding, LUO Huaiting, LIU Yu, XU Kun41-4513Construction method optimization in the landslide treatment of open-pit coal mineXU Guiwa46-48,5214Selection of first mining area and initial slotting position in oil shale open-pit mineSUN Xin49-5215Calculation research on skirt board length of belt conveyorZHOU Qi53-5516Application of lubricating grease test in the fault diagnosis of mining equipmentZHANG Jing56-58,6217Discussion on water supply system information transformation design schemeBIAN Mingming, LI Jiajian, GUO Xiuping59-6218Application of multi thread technology in data acquisition of truck dispatching systemHE Shuai63-65,6819Research on maintenance and control mode of mining truck hydraulic system pollutionBIAN Yuan, LI Yuan, ZHANG Zhijun66-6820Technology and application of electric wheel dump truck localization wheel edge reducerWANG Feng69-72 