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露天开采矿物的现在方法比地下开采有下列优点:回收率和生产效率指标较高;机械化能力强;检测质量和品级容易;经生和安全性高。从生态学和社会问题观点看,地下开采受到欢迎。为了研究从露天开采向地下开采过渡的最佳化,对两种开采方法的经济利润进行了模型对比。用假设的例子对模型进行了详细分析,有下列一些假设:固定贴现工资率为15%;每年开采两个交会台阶水平;矿柱等于
The current method of surface mining of minerals has the following advantages over underground mining: high recovery and productivity indicators; strong mechanization; easy detection of quality and grade; high hygiene and safety. From the point of view of ecology and social issues, underground mining is welcomed. In order to study the optimization of the transition from open pit to underground mining, the economic profit of the two mining methods was modeled. The hypothetical example is used to conduct a detailed analysis of the model with the following assumptions: a fixed discount rate of 15%; mining each of two rendezvous levels a year; a pillar equal to