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准确地计算损失率和贫化率,是矿山地质测量人员的重要工作之一。但是目前由于一些水力开采砂矿的矿山,对于这个问题尚未引起足够的重视,因此造成巨大的损失和贫化。下面先分析一下造成损失及贫化的原因,然后再谈谈如何正确地计算损失率和贫化率等问题。造成损失的原因(一)永久性损失1.由于水力截割含矿层,矿浆飞洒在采场帮壁岩石的节理或裂缝内,以及卡斯特地形发达的细小空洞中。2.含矿层遗留在极不平坦和层理发达的底岩上,因而不能采出。
Accurately calculate the loss rate and the depletion rate, is one of the important work of mine geological surveyors. However, due to the fact that some mines for hydropower mined sand have not given enough attention to this issue, they have caused huge losses and depletion. Let us first analyze the causes of loss and depletion, and then talk about how to correctly calculate the loss rate and the rate of dilution. Causes of loss (a) of the permanent loss 1. Due to the hydraulic cutting of ore-bearing layer, the slurry splashed in the stope to help the wall rock joints or cracks, as well as Custer special terrain developed small holes. 2. The ore-bearing strata left on the extremely uneven and bedding developed rock, and therefore can not be produced.