Abstract: Based on the previous research in the realization and application of Kriging method on the computer, the authors introduce the theory, procedure and key technologies of the application of 3D geosciences modeling technology in creating orebody grade model. The basic procedure is as follows: construct 3D surface model of orebody with actual geological data; generate 3D block model of orebody from tin model; generate 3D grade model of orebody with Kriging method; estimate mine reserves using the grade model. Besides, this paper applies the above method to estimate the reserves of a copper mine in Tibet to provide empirical evidence. Analysis and comparison of the estimation results illustrate the advantages of application of 3D geosciences modeling technology on Kriging method for solid mine reserves estimation.

Key words: orebody grade model, solid mine reserves estimation, 3D Kriging

摘要： 结合Kriging方法在计算机上的实现和应用,介绍了运用三维地学建模技术生成矿体的三维品位模型的原理流程以及关键技术,并在此基础上进行矿产资源储量计算。其基本流程为:根据实际地质勘探数据生成矿体三维实体模型;在实体 tin 模型内部应用块模型方法进行划分,建立矿体块体模型; 利用 Kriging 方法进行插值, 生成矿体的品位模型;在此基础上进行储量计算。以某铜矿为例,对储量计算结果进行了比较和分析,取得了良好效果。

关键词: 品位模型, 储量评价, 三维克立格法