1Study of the method of mixed drainage in the fourth system coal bearing aquifer of open-pit coal mineZHAO Yajun, BAI Le1-3,102Slope stability analysis and parameter optimization of inner dump in Yuanbaoshan Open-pit Coal MineBAI Yu, GAO Qiuping4-6,103Discussion on technical measures of control large lump rate in Limestone Open-pit MineHU Shishi, WU Lele, YUAN Feihu7-104Feasibility study on south slope descending in Buzhaoba Open-pit MineLUO Dajun, LU Xiang, HAN Liu11-145Research on the key technology of throwing blasting in high bench dragline casting strippingMA Zhanyi15-186Research on the efficiency of WK - 10B shovel in 16# coal seam selection of Yimin Open - pit MineCAI Baojia, LIU Qingxun19-227Feasibility study on the application of vehicle mounted mobile measurement system in open-pit mineYAN Huaimin23-258Determine of reasonable transportation distance of dump truck in Huolinhe North Open-pit MineZOU Tianxu, CHEN Yongxiang26-299Study on slope stability in the internal dump of open-pit mineZHANG Chunfeng, CAO Fangzhi30-32,3910The ways to improve the recovery rate of oil shale ore in East Open-pit MineXIA Shouliang, LI Dongsheng33-35,3911Discussion on walking path of dumping machine in Pingshuo East Open-pit MineLIU Guo, WANG Zhongjie36-3912Application of carbon dioxide fracturing for blasting technology in Buzhaoba Open-pit MineWANG Gangbo, PENG Jiyang, XU Zhenyao40-4213Study on 7# and 8# coal seam admissibility in Weijiamao Open-pit Coal MineZHANG Yonggui, LIU Hongyu, SHI Xiaodong, YE Yongxiang43-4614Belt conveyor system based on frequency conversion controlLI Tao47-49,5215Fault causes and repair scheme of WK-55 electric shovel hoisting drumLU Yunfeng50-5216Optimization of limit device of PL-2400 dumping machine supporting vehicleYANG Wankun, PU Weilin53-55,5917Discuss on repairing technology of PH2800XPB electric shovel hoisting drumLI Yawu, CHEN Zejian, HE Dong, MENG Ping56-5918The way of realizing green mining in Open-pit Coal MineYAO Yong60-61,6419Research on safety process control modeJIANG Nanyang62-6420Safety technical measures in goaf of open-pit coal mineLYU Yang, XING Zhen, LIU Tao65-66,70 