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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。
By using 3D geological software, the 3D geological model of Dazuji molybdenum ore body is established. Combined with the geostatistics, the reserves of the orebody are estimated to provide favorable theoretical guidance for the next exploration and exploitation of the mine. With the help of MicroMine software, the geological database, surface DTM, ore body model and grade model of Mo ore deposit in Dacushang, Inner Mongolia were established to realize the 3D data of borehole data in the mining area and to more objectively and truly demonstrate the spatial location and morphological characteristics of the ore body. Based on the principle of geostatistics, the samples in the borehole were combined and the samples were statistically analyzed. The semi-variograms of the ore body orientation, orientation and vertical direction were established, and the mathematical model of the deposit was established. The ordinary Kriging method is used to estimate the grade of the ore body and estimate the ore body reserves. Compared with the traditional block method and the actual mining situation, the results show that the calculation of reserves by 3D geological software is more reliable and can provide the basis for the future dynamic management of resources in mines.