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我国在冶金矿山设计中,经济合理剥采比一般都是用矿石成本法计算,或按有关规定及参考资料中选取,由于它未能考虑矿床开采深度、矿岩硬度和矿石品位等因素的影响,所以,按此经济合理剥采比确定的露天开采境界,不是合理的开采境界。(一)露天矿开采深度对开采成本的影响一个露天矿在开采过程中,随着开采深度的增加,其运输距离亦随之变化,在一般情况下,若台阶高度等于12米,当采用标准轨距铁路运输开拓时,每延深一个水平约增
In the design of metallurgical mine in our country, the economic and reasonable stripping ratio is generally calculated by the ore cost method, or according to the relevant provisions and reference materials, because it can not consider the depth of ore deposit, the hardness of ore rock and ore grade and other factors Therefore, it is not reasonable for them to exploit the economic and rational exploitation more than the determined level of open-pit mining. (A) the impact of the mining depth of open pit mining costs An open pit mine in the mining process, with the mining depth increases, the transport distance also changes, under normal circumstances, if the step height is equal to 12 meters, when using the standard When rail gauge railway is opened up, it will increase by about one level every time