Application status and prospect of blast casting-dragline stripping technology in open pit coal mine in China
The blast casting-dragline stripping technology can reduce the number of equipment,improve the production capacity,and reduce the stripping cost of the open pit coal mine.Compared with the tra-ditional single bucket truck technology,it has significant technical and economic advantages.In order to further promote the popularization and application of this technology in China,the development process of this technology was elaborated in detail;the application of Heidaigou open pit coal mine and the ex-perience of Haerwusu open pit coal mine in using the throwing blasting technology to deal with the goaf were systematically summarized;the problems faced by the application of this technology in China was analyzed emphatically;the geological resource conditions of open pit coal mines at home and abroad were comparatively analyzed.The results show that blast casting-dragline stripping technology has a-chieved good application effect in China.In the next step,it is necessary to focus on optimizing the technology parameters to improve the production efficiency of the system.Similar to the characteristics of deposits mined by dragline stripping technology in foreign countries,the coal seams mined in open-pit coal mines in China are mostly over 25m thick,with the main coal seams mostly between 1～3 and the dip angle of the coal seams mostly below 10.The roof of the coal seam is mostly composed of medi-um hard rocks such as mudstone and sandstone,and the Proctor series of the roof rocks is mostly be-tween 1～4.A considerable number of open-pit coal mines in China have favorable conditions for ap-plying the throwing blasting shovel dumping technology a considerable number of domestic open-pit mines have favorable conditions for the application of blast casting-dragline stripping technology.This technology,especially the blast casting,has broad application prospects in China.
open pit coal mineblast castingdraglinestripping technologyapplication prospect
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维普
