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目前我国铁路运输露天矿的剥岩台阶宽度较大,工作帮坡角一般为10°～12°,造成矿山初期剥采比大,剥岩量多,最终矿石成本高,存在着利润少甚至亏损现象。陡帮开采是以较陡的工作帮坡角剥岩,降低初期剥采比,推迟部分剥岩,这从动态观点进行经济分析,可使矿山在整个开采期间获得较大的利润。 汽车运输陡帮开采在国外已广泛应用,在国内也有少数露天矿成功地使用了这一新
At present, the width of pebble stripping of railway open-pit mines is large, and the working slope angle is generally 10 ° ~ 12 °, resulting in the large ratio of stripping and mining in the early stage of mines, the large amount of stripping rocks, the high cost of final mines, the low profit or even loss phenomenon. Steep rock mining is a steep work to help slope angle rock stripping, reducing the initial stripping ratio, postponed part of the stripping rock, which from a dynamic point of view of economic analysis, the mine can make greater profits throughout the mining period. Automobile transport steep to help the mining has been widely used abroad, there are a few opencast mines in China have successfully used this new