推土机—铲运机露天开采砂金矿床的实践

Practice of the bulldozer-scraper mining method in China's qold glacer mining

The bulldozer-scraper mining nethod has begun to apply in China's gold placer mines.To mine the No.5 deposit in Huma county,Heilong jiang province,this method was adopted.Here, the mining procedure and the results of the application in Huma as well as the features and the adaptability analysis of this method are described. The application shows that the bulldozer-scraper mining method is very suitable to the placer deposits that loaded in permafrost area, also it is adaptable to apply this method in rich but small gold deposits that are not available in dredging mining. The mining efficiency of this method has been proved to be nearly as high as that of the dredging method,but it's production cost is slight higher.