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露天开采境界的合理与否,直接影响着露天矿的各项技术经济指标。露天开采境界的圈定是设计中工作量较大和较复杂的一道工序,特别是对大型的、埋藏条件和地形地表条件复杂的矿体,需要做各种各样的境界方案,不仅要花费很多人力和时间,而且由于人工计算上的简单粗造,而不能找到经济上最优的境界。例如,过去用产品价格法圈定境界时,先用全矿平均的矿石品位,求算出一个经济合理剥采比
Whether the realm of open-pit mining is reasonable or not will directly affect various technical and economic indicators of open-pit mines. The delineation of open pit mining is a heavy workload and complicated process in design. Especially for large-scale ore bodies with complicated burial conditions and topographic and surface conditions, a variety of realm plans need to be implemented, which not only takes a lot of manpower And time, but also because of the simple calculation of artificial calculation, and can not find the most economically optimal realm. For example, in the past when the product price method was used to delineate the realm, the average ore grade in the whole mine was used to calculate an economically reasonable stripping ratio