露天开采矿体的价值评估对境界的影响研究

Influence of Value Estimation of Surface Mining Ore on Pit Limit

为研究露天采矿中如何进行低品位矿体估值,通过对低品位矿体估值方法的对比研究,最终确定了适用于不连续低品位矿体的布尔差集二次估值方法。研究结果揭示了利用已知钻孔数据对特定低品位矿体插值方法进行分析选择的重要性。采用布尔差集二次估值方法获得了矿体低品位段的分布数据,并通过实验对比,论证了估值方法对露天开采境界合理确定的重要影响。

The low-grade ore valuation methods were compared and the Boolean difference set secondary valuation method suitable for the discontinuous low-grade ore body was determined. The results showed that on the basis of borehole data,the importance of choosing the specific low-grade ore body in the inter polation method was verified. In the Boolean difference set secondary valuation method, the distribution data of low-grade sections of the ore body were obtained,and the influence of the valuation method on the determination of the reasonable pit limit of surface mining was discussed.