1Feasibility study on underground mining to open-pit mining in Rujigou MineJIANG Wenping1-3,62Application of backfilling technique in slope deformation treatmentWANG Xiaoliang, ZHANG Tuo, HAN Meng4-63Study on north slope dynamic mining scheme in Pingshuo East Open-pit MineXU Jun, CAI Guangqi, DUAN Lishi7-10,144Scheme research on covering slope of east slope in Xinling South Open-pit MineLI Xiaojun11-145Study on realm adjustment and mining optimization in Pingshuo mining areaWU Mao15-17,216Footwall slope stability analysis in Xinqiao Open-pit Mine deep miningLI Xiaoqing, GU Yucheng18-217Blasting scheme of small structural zone in Funshun West Open-pit Mine north slopeLIU Tao, XING Zhen22-258Practice of bunch-holes and down pressure blasting disposing goafLIU Tian, LU Changwei26-28,329Analysis of influencing factors of electric shovel efficiency in Yimin Open-pit MineLIU Jinqiang, ZHANG Bo, ZHENG Shukun29-3210Coal powder elimination transformation optimization design in coal preparation plantGUO Yongfeng, SHI Lingjie, JIA Huiting33-35,3811Application of TBS centralized control system in Xiqu coal preparation plantWANG Yongcheng, YANG Haifeng36-3812Design transformation of heating system of long distance belt conveyor in the mining areaYANG Jing39-42,4613Research on swinging ladder and its locking device of electricity shovelTANG Na, WANG Zhengtao, ZHOU Hang43-4614Design of monitoring system in mining and stripping machine electric maintenance competition in open-pit mineSU Liangbi47-49,5215Contract management system based on WEB technologyWANG Shijun50-5216Integrated dispatching system based on TD- LTE wireless broadband clusterLIU Qiang53-5717Study on low radiation structure of coaxial cableLIU Yiping58-60,6318Analysis on starting and braking of large belt conveyorZHOU Qi61-6319Welding technology of WK-55 shovel lifting roller shaft seatJIAO Ruijun, Butegeleqi64-66,7020Construction of safety risk pre-control management system in open - pit coal mineHONG Haifeng, YANG Jianguo67-70 