指示克里格矿产资源量三维估算方法应用研究——以安徽省某斑岩型铜金矿床为例  

Application Research of Indicator Kriging in 3D Mineral Resources Estimation—A Case Study of Porphyry Cu-Au Deposits in Anhui Province

作　　者：马良[1] 江健华 祁轶宏 潘杨 唐敏惠[1] 李晓晖 郑林 李方 MA Liang;JIANG Jianhua;QI Yihong;PAN Yang;TANG Minhui;LI Xiaohui;ZHENG Lin;LI Fang(Anhui Province Public Geoloogical Survey Management Center,Hefei 230051,China;Hefei University of Technology,Hefei 230009,China;Mineral Resources Reserves Evaluation Center of Anhui Province,Hefei 230051,China)

机构地区：[1]安徽省公益性地质调查管理中心,安徽合肥230051 [2]合肥工业大学,安徽合肥230009 [3]安徽省矿产资源储量评审中心,安徽合肥230051

出　　处：《河北地质大学学报》2024年第5期14-20,共7页Journal of Hebei Geo University

基　　金：安徽省自然资源科技项目(2022-K-17)。

摘　　要：文章以安徽省某大型斑岩型铜金矿床为研究对象,基于指示克里格方法对矿床Cu资源量进行估算研究,并将估算结果与传统几何法和普通克里格方法估算结果进行对比分析,以评价指示克里格法的适用性与合理性。研究结果表明:指示克里格估算结果与其他两种方法相比虽有一定偏差,但均在误差范围内,表明指示克里格法适用于斑岩型铜金矿的资源量估算工作;指示克里格法由于考虑了品位数据的空间分布特征及特异值的影响,相比传统几何法、普通克里格法,估算结果中的平均品位和金属量均偏高;指示克里格方法更适用于品位分布连续性较差、特异值具有较高价值和意义的金属矿床。This study focuses on a large-scale porphyry Cu-Au deposit in Anhui province as the research subject.Based on the indicator Kriging method,the study estimates the Cu resources of the deposit and compares the estimation results with those obtained using the traditional geometric method and the ordinary Kriging method to evaluate the applicability and rationality of the indicator Kriging method.The research results indicate that:although there is some deviation in the indicator kriging estimation results compared to the other two methods,they are within the error range,indicating that the indicator kriging method is suitable for resource estimation of porphyry Cu-Au deposits;the indicator Kriging method,considering the spatial distribution characteristics of grade data and the influence of the extra high grade.Compared to the traditional geometric method and the ordinary Kriging method,the average grade and metal content in the estimation results of the indicator Kriging method are both higher;the indicator Kriging method is more suitable for metal deposits with poor grade distribution continuity and significant value of the extra high grade.

关 键 词：指示克里格法 矿产资源估算 地质统计学 斑岩型铜金矿 

分 类 号：P628.2[天文地球—地质矿产勘探]