MAPGIS二次开发在化探元素异常提取中的应用

Geochemical Anomaly Extraction Based on the Fractal Content Area and Software Implementation

地球化学元素的异常下限值确定在矿产勘查中非常重要,本文在MAPGIS二次开发的基础之上采用非线性算法分形含量面积来圈定地球化学元素异常,可以使地球化学空间信息数据和图形进行快捷地转换。其中,通过分形含量面积来确定的异常下限与传统方法对比,得到的异常下限值更加精确。同时,通过MAPGIS二次开发使地球化学元素异常圈定更加自动化和智能化。本文以湖北省铜绿山铜铁矿为例,取得了较好的效果。

The determination of geochemical threshold value in mineral exploration is very important.Based on MAPGIS secondary development ,this paper uses nonlinear algorithm for fractal content area to delineate geochemical anomalies, making the geochemical spatial information data and graphics for quick conversion. Among them, through the comparison between the lower limit of abnormity determined by fractal content area and the traditional method, the abnormal limit is more precise.At the same time, through the MAPGIS secondary development, geochemical anomaly delineation gets more automated and intelligent. This paper takes Qinghai province Dachaidan town as an example, and good result is obtained.