基于矿体三维地质建模的云浮高棖矿区储量计算  

Reserves Estimation for Yunfu Gaochang Deposit Based on 3D Geological Modeling of Ore-body

作　　者：张焱[1,2,3] 周永章[1,3] 李文胜[1,2] 王正海[1,3] 侯卫生[1,3] 王林峰[1,3] 

机构地区：[1]中山大学 [2]广东省地质调查院 [3]广东省地质过程与矿产资源国家重点实验室

出　　处：《金属矿山》2011年第1期93-97,共5页Metal Mine

摘　　要：在三维可视化环境下可快速实现矿体品位和储量的高精度计算。首先根据矿床地质勘探资料用三维可视化软件建立地质数据库及相应的矿体三维实体模型,用以模拟矿体形态;其次,建立矿体块体模型,应用块模型方法对矿体内部进行划分,进而采用地质统计学方法对矿体内部特性数据进行赋值估算,从而获得矿体内部所有块的特性数据;最后完成矿床品位和储量的统计分析计算。借助大型三维可视化矿山软件Micromine,在建立云浮高棖矿区某金属矿床的地质数据库和矿体三维实体模型的基础上,建立了矿体的块体模型,分别采用普通克里格法和距离幂次反比法,根据金属的实际边界品位对该矿床的品位和储量进行分析和估算,并将矿山生产实际获得的储量与计算获得的储量结果进行了对比分析。结果表明,可视化方法不但效率高且结果可靠。In 3D visualization environment, the grade and reserves of ore-body can be estimated rapidly and precisely. First, the geological database and related 3D solid model are built based on the geological exploration data by 3D visualization software to simulate the shape of the ore-body. Next, the block model of ore-body is formed to divide the internal ore-body, and then the internal specialty data of ore-body blocks are evaluated by geo-statistics method to get all specialty data of ore-body blocks. At last, the paper accomplished the analysis and estimation on the grade and reserves of ore-body. With the help of large 3D visualization mine software Micromine, the ore-body block model is established based on the geological database and 3D solid model for a metal mine in Yunfu Gaochang deposit. The ordinary Kriging method and the distance power inverse ratio method are used to analyze and estimate the ore-body grade and reserves according to the actual boundary grade of metal resources. Then, the estimated results above are compared with the reserves obtained from actual production. It is proved that the visualization method is effective and reliable.

关 键 词：Micromine 普通克里格 距离幂次反比 储量估算 

分 类 号：P208[天文地球—地图制图学与地理信息工程]