1Optimization research of Hunchun Zijinshuguang Gold and Copper Mine open-pit boundaryJIAN Ximing, ZHENG Guangbin1-3,82Analysis of shovel car matching quantity in Pingshuo East Open-pit MineGUO Yuanchao, ZHAO Jun, XIAO Guoqiang4-83Application of the end slope advance dumping new technology in Yimin Open-pit MineLI Wei9-11,154The exploration and control technology management system of open-pit mine goafZHANG Jiaquan, HE Changbin, XIE Tingkun, CHANG Yonggang, LI Haichao, YUAN Wenjie12-155Practice of high efficiency and safety control blasting under complex environmentCAI Xiangsheng, CAO Xiaokang, LING Yuheng16-18,226Slope stability research of Hunchun Zijin Shuguang gold and copper mine external dumpZHENG Guangbin, LIN Yibin19-227Influence of groundwater on the west deformation area of Ha'erwusu open - pit coal mine dumpLI Fuping23-25,298Application of PVC pipe interval charging in deep hole blastingMA Wanglong26-299Research and implementation of banana screen instead of flip flow screen depth screeningLIU Xiao30-32,4010Study on coal gangue separating and upgrading technologyLIU Kunlun33-36,4011Application research of wireless Mesh network communication technology in open-pit mine dispatching systemLIU Junchang, HE Lin37-4012220 tons mine use dump truck electrical control device cooling system analysis and improvement designCHEN Xiaoyong, LIU Xi, ZHANG Huaming41-4513Design of automatic control system for spiral shearerPAN Hongtao46-49,5314Changing model study for roof support of mine truck caseZHANG Ning50-5315Optimization of belt conveyor feed opening chute structureZOU Guohua, YANG Jianming, QIAN Shaoyou54-56,6016Application of a dump truck tire monitoring management systemZHANG Jun57-6017Problems and solutions in the installation of belt conveyorGUO Mingmin61-6518MT5500 electric wheel dump truck cooling fan power line upgradeZHANG Jing, BAI Litao, JIN Xin, BI Kuiyuan66-68,7119The electrical control and troubleshooting of L1150 front loader steering systemTIAN Zhensheng69-7120Research on ecological harmonious development model of Pingshuo mining areaGE Shanfeng72-75 