普通克里格法在桃山罗布里南部地区铀矿储量估算中的应用

Application of Ordinary Kriging Method in Uranium Reserves Estimation in the South of Luobuli Area,Taoshan

为提高矿产资源量估算的可靠度,对普通克里格法进行应用探索。基于3Dmine建模平台和前人研究成果,以钻孔、勘探线剖面等资料为依据,初步建立了桃山罗布里南部地区的地质数据库和三维地质模型。基于Visualstat地质统计模块,通过数据分析、实验变异函数验证与模拟确定变异函数参数。最后,利用普通克里格法对块体单元赋值,实现了资源量的快速计算。结果表明,普通克里格法不仅估值结果准确可靠,而且可设置多个高程区间、不同品位值对资源量进行动态分析,为矿山部署及下一步地质勘查工作提供新思路。

In order to improve the reliability of mineral resources estimation,the application of ordi⁃nary Kriging method is explored.Based on the 3Dmine modeling platform and previous research results,this study preliminarily established the geological database and 3D geological model of the southern Luobu⁃li area of Taoshan based on the data of drilling and exploration line profile.Based on Visualstat geological statistics module,the variation function parameters are determined by data analysis,experimental varia⁃tion function verification and simulation.Finally,the ordinary Kriging method is used to assign the block element,and the rapid calculation of resource quantity is realized.The results show that the ordinary Krig⁃ing method is not only accurate and reliable,but also can set multiple elevation intervals and different grade values for dynamic analysis of resource quantity,which provide new ideas for mine deployment and next geological exploration.