加权中位数法的基本理论、方法及其应用

Basic Theory,Methodology and Application of the Weighting Median Method

物化探及其他地学数据常呈现非正态分布特征,例如数据中存在特异值或在研究区有几种矿化类型时,致使数据呈现出长尾巴分布。为了提高数据处理的质量和矿石储量计算的精度,本文介绍一种地质统计学方法——加权中位数法。文中讨论了方法的理论,重点研究了方法步骤,包括距离权、丛集权和综合权的计算方法,最后给出一个计算金矿床矿石储量的实例。

Geological(including geophysical and geochemical)data usually have a non-normal distribution withtheir distribution curves charac erized by a long tail.Such a distortion is frequently caused the presenceof outliers in the data,a diversified mineralization types,or some other factors.In order to improve thequality of data processing and raise the precision of ore reserves calculation,a geostatistical method,theweighting median method,is presented.In this paper the basic theory and the computing methods of di-stance weighing,cluster weighing and sythetic weighing are introduced,and an example of ore-reservecalcula ion for a fold deposit is cited for illustration.