坦桑尼亚纳钦圭阿石墨矿三维矿体建模及资源量估算对比  

3D Model Construction and Resource Estimation Comparison of Nachingwea Graphite Mine in Tanzania

作　　者：杜菊民 景永波 陈诚 陈春生 孙晨 周傲 DU Jumin;JING Yongbo;CHEN Cheng;CHEN Chunsheng;SUN Chen;ZHOU Ao(Jiangsu Geology&Engineering Co.,Ltd.;Jiangsu Institute of Geology and Mineral Resources Survey)

机构地区：[1]江苏省地质工程有限公司,江苏省南京市210018 [2]江苏省地质矿产调查研究所

出　　处：《现代矿业》2021年第9期31-34,67,共5页Modern Mining

基　　金：江苏省地质勘查专项(编号:苏财建[2018]96号);江苏省省外、国外矿产资源风险勘查专项(编号:苏矿地发[2019]139号)。

摘　　要：纳钦圭阿石墨矿是坦桑尼亚新发现的大型晶质石墨矿之一。为更好地研究矿体空间三维形态、准确估算资源量,系统整理了矿区测量、地质、探槽和钻孔数据,基于3DMine三维地质软件平台,建立了矿区的三维地表模型、地层模型、矿体模型、块体模型及钻孔数据库。通过距离幂次反比法进行了资源量估算,并对I1号主矿体进行不同估算方法对比研究。结果表明,采用距离幂次反比法、传统垂直断面法及基于三维软件的垂直断面法,相对误差均小于5%,资源量估算结果较为可靠。纳钦圭阿石墨矿三维模型的建立,将为后期开采设计、资源量动态管理、矿山数字化建设提供基础。Nachingwea Graphite Mine is one of the newly discovered large-scale crystalline graphitemines in Tanzania.In order to better study the three-dimensional shape of the ore body and accurately esti-mate the amount of resources,the mining area measurement,geology,exploration trench and borehole datahave been systematically sorted out.Based on the 3 DMine three-dimensional geological software platform,athree-dimensional surface model,stratigraphic model,and the mine area have been established.Body mod-el,block model and drilling database. The resource estimation is carried out by the inverse power ratiomethod of the distance,and a comparative study of different estimation methods is carried out on the Ⅰ1 main orebody.The results show that the relative error of the traditional vertical section method and the verti-cal section method based on three-dimensional software are(distance power inverse ratio method),and theresource estimation result is more reliable. The establishment of the three-dimensional model of the Nachin-gwea Graphite Mine will provide the basis for later mining design,dynamic resource managementand digitalconstruction of the mine.

关 键 词：三维地质模型 实体模型 块体模型 距离幂次反比 晶质石墨 

分 类 号：P619.252[天文地球—矿床学]