合理确定露天矿开采境界,能有效地控制生产剥采比、合理地回收矿石资源、较长地推迟矿山生产规模的衰减,合理地使用国家投资与可靠地得到较好的经济效果。它是一项经济意义大,技术性又较复杂的采矿研究课题。因此曾引起国内外矿山设计研究工作者的重视。确定露天境界的原则较多,常用的有:平均剥采比、境界剥采比、时间剥采比、生产剥采比与初始剥采比之和小于或等于经济合理剥采比等原则。上述确定境界的原则不论在其原则本身以及使用方法上都存在一些问题,使用效果不太好。 Reasonably determine the state of open-pit mining, can effectively control the production stripping ratio, a reasonable recovery of ore resources, a long delay in the decline of mine production scale, the rational use of national investment and reliably get better economic results. It is an economically significant, technical and complex mining research project. Therefore, it has aroused the attention of mine design and research workers at home and abroad. The principle of determining the realm of open air is more commonly used: average stripping ratio, realm stripping ratio, time stripping ratio, the ratio of production stripping ratio and initial stripping ratio is less than or equal to the principle of economic rationality stripping ratio. The above-mentioned principle of determining the realm has some problems in both the principle itself and the using method, and the effect is not very good.