地质统计学在矿山储量估算中的应用:以内蒙古大苏计钼矿为例

 运用矿山地质三维软件，建立大苏计钼矿体三维地质模型，并结合地质统计学，对矿体进行储量估算，为矿山的下一步勘探及开采提供有利的理论指导。利用MicroMine软件，建立内蒙古大苏计Mo矿床地质数据库、地表DTM、矿体模型及品位模型，实现矿区钻孔数据信息三维化，更加客观真实地展示矿体的空间位置及形态特征。基于地质统计学原理，对钻孔内样品进行组合，对组合后的样品进行统计分析，分别建立矿体走向、倾向、垂向3个方向的实验半变异函数，确立矿床的数学模型。利用普通克里格法，对矿体内部进行品位估值，对矿体储量进行估算。与传统地质块段法及矿山实际开采情况进行对比，结果表明，运用三维地质软件进行的储量计算较为可靠，可为今后矿山的资源动态管理提供依据。

A CASE STUDY ON DASUJI MOLYBDENUM DEPOSIT IN INNER MONGOLIA: APPLICATION OF GEOSTATISTICS IN ESTIMATING MINE RESERVES

 This paper uses mine 3D software to establish the 3D geological model of Dasuji Molybdenum deposit, and applies geostatistics to estimate the reserve and resource, offering references for next exploration and mining. MicroMine is used to set up geological database of Dasuji molybdenum deposit, topographical DTM, ore body model and grade model, 3D of drilling database, also shows the spatial position of morphology of ore bodies in reality. Based on geostatistics, drilling samples are composited and statistically analyzed. Grade and reserve is estimated on the basis of ordinary krigging. Compared to the traditional block and mine's production, this 3D software gives reliable estimation, which provides references for dynamic management of mine's resource.