地电提取原始数据的综合处理方法——以金川硫化铜镍矿Ⅱ矿区为例

Integrated Treatment of Original Data in Geo-Electrochemical Extraction——a Case from Ore DistrictⅡof Jinchuan Sulfide Copper-Nickel Deposit

根据矿区指示元素与主成矿元素的相关性,运用数据标准化和相关分析等多元统计方法,提出了6种将地电提取各单元素异常进行叠加整合的方法,以强化找矿信息。结果显示:"全累加"异常显著但不平稳;"正累加"剔除了负相关元素的影响;"大累加"进一步剔除了低度相关元素的影响;"全关加"受相关性较小或负相关元素的影响较大,甚至出现负异常;"正关加"异常显著平稳;"大关加"进一步剔除了低度相关元素的影响,对矿体的指示作用更直观、清晰、有效。

Based on the correlation coefficient of the indicator elements with the main ore-forming element（R） in mining area,data standardization,correlation analysis and other multivariate statistics methods are used.Six methods are proposed to superimpose and integrate in geo-electrochemical extraction single-element anomaly,which would strengthen the prospecting information.It shows that＂all accumulation of ESV＂ anomaly is clear but not stable.The impact of negatively correlated elements are excluded by ＂accumulation of ESV（the elements with R〉0）＂.＂Accumulation of ESV（the elements at α=0.01）＂ nomaly further excludes the impact of low-level-correlation elements.＂All accumulation of the product of ESV and R＂ is greatly influenced by elements whose correlation coefficients are less or negative.＂Accumulation of the product of ESV and R（the elements with R〉0）＂anomaly is clear and stable.The impact of low-level-correlation elements is further excluded and therefore the ore body could be indicated more intuitively,and clearly by ＂accumulation of the product of ESV and R（the elements at α=0.01）＂.