Abstract:

This paper makes an optimization of stripping system of Donglutian Open-pit based on its mining conditions. According to the conditions of topography, geology, rock, coal seam and climate in the pit, this paper proposes several stripping plans for different levels including the upper layer of loess, rock layer above the No.4coal seam, rock layer between coal seams. And analyzes these plans qualitatively and quantitatively, determines the possible stripping methods for different levels. Based on the combination of these plans, a set of feasible plans for operations in Donglutian Open-pit is obtained. By analyzing economic indicators about the open pit mine, the combined semi-continuous system is selected for the mine at last , details as: the loose layer of peel is outsourced, 3 sets of self-moving crusher are used in 4th coal roof above 30m, and single bucket - truck intermittent process is used for the rest

Key words: open pit, stripping, combined mining system, self-moving crusher