大屯锡矿应用DIMINE软件进行储量计算的误差分析

Error Analysis of Reserve Calculation by DIMINE Software in Datun Tin Mine

分析统计了云锡大屯锡矿167个矿体,分别通过传统几何法和DIMINE软件进行储量计算的结果,通过分析认为结果的差异来源于体积和品位差异.体积差异产生原因是传统几何法存在系统性误差;对于品位差异,当样品过少时两种方法均误差较大,样品多时距离幂反比法估算结果相对可信,当样品足够时,使用克里格法进行估值三种方法中误差在最小.

167 orebodies in Yunxi Datun Tin Mine are analyzed and counted. The results of reserve calculation by traditional geometry method and DIMINE software are respectively analyzed. It is considered that the difference of the results comes from the difference of volume and grade. Volume difference is caused by systematic errors in traditional geometric methods. For grade difference, when the sample is too small, the errors of both methods are large, and the estimation results of power inverse ratio method for multi\|time distance of samples are relatively credible. When the sample is enough, the errors of the three methods of Kriging method are the smallest.