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三维地质模型的精细描述是相关三维成矿预测和储量估算的前提和保证,更有利于发挥计算机三维可视化技术和地质统计学等在工程建设领域的作用。以河南省某铝土矿床为例,针对三维地质建模过程中存在的难点问题,在传统建模方法基础上提出了一种基于勘探工程实际空间位置建模方法,在野外勘探工程密度较小的情况下也能准确圈定矿体。首先以地质勘查资料为基础,对建模的过程进行了阐述,构建了三维矿体模型、三维地层模型,然后采用普通克里格法和距离幂次反比法估算了资源储量,并对矿体的品位分布和储量类别进行了表达,最后使用3种不同的验证方法进行了精度检验。实现了资源量类别、资源量品位区间、资源量估算动态可视化管理。通过对该矿区的矿体建模和资源量计算,验证了方法的有效性,对于同类型矿床有一定的借鉴意义。
The detailed description of the three-dimensional geological model is the premise and guarantee of related 3D mineralization prediction and reserves estimation, and more conducive to playing the role of computer 3D visualization technology and geostatistics in the field of engineering construction. Taking a bauxite deposit in Henan Province as an example, aiming at the difficult problems in the process of 3D geological modeling, a method based on the traditional modeling method was proposed based on the actual spatial location modeling of exploration engineering. Small cases can accurately delineate ore bodies. First of all, based on geological prospecting data, the process of modeling is expounded, the three-dimensional ore body model and three-dimensional formation model are constructed, and the resource reserves are estimated by ordinary Kriging method and distance inverse power-law method, The grade distribution and the type of reserves were expressed, and finally the accuracy was tested by three different verification methods. Realized the resources of the type of resources, resources, quality grade interval, resource estimation dynamic visual management. Through the ore body modeling and resource calculation of this mining area, the validity of the method is verified, which has certain reference significance for the same type of deposit.