In the mining program,the classical linear geostatistics such as ordinary kriging will induce biased estimate for the local recoverable ore reserves and metal and grade over smoothing, due to lack of the available sample data. In order to solve the a certain bias for the high smoothing effect when estimating the grade of a very small mining selectivity using the classic linear classic geostatistics,based on a gold deposit for instance, the non-linear techniques for example disjunctive kriging are considered acceptable for estimating the recoverable reserve of local mining selectivity and prediction of grade histogram at the different cutoffs in the panel,which may have an indicative arrangement on the mining plan.%采矿过程中,在处理局部可回采的资源量和金属量估算时,由于一些样本数据无法获得,经典的线性地质统计学方法,比如普通克里格方法,无法进行无偏估算和品位具有高平滑作用.为了解决线性地质统计学在对采矿过程中较小的块段任意边界品位下的平均品位及储量估算时,由于高平滑作用导致计算结果与真实值存在一定的偏差的问题,本文以某大型金矿为例,采用非线性地质统计学中的析取克里格法,预测了盘区内开采矿块的品位频率分布,估计出每个盘区内的可回采储量,这样将有利于对该矿下一步编排远景采矿计划時起到很好的指示作用.
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