According to the condition of ore body, selected mining method and proportion of each mining method, and through calculation, the mining loss rate is 12% and the impoverishment rate is 15%.
根据矿体赋存条件和所选用的采矿方法，各种采矿方法所占的比例，计算采矿综合法损失率为12%、贫化率为15%。
It also points out that the necessity of the process in decreasing mining loss and dilution rate, and proposes some concrete ways for further modification.
指出该联合工艺对降低采矿损失贫化的必要性和改进的具体途径。
Caving method is a high efficiency mining method widely used in underground metal mines. While it is a characteristic of the method that the loss rate and dilution rate is high.
崩落采矿法是金属矿山地下开采应用较多的一种高效采矿方法，覆岩下底部放矿损失贫化大是该采矿法的一个特点。
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