标题:
基于三维地质模型的控矿因素提取—以金川铜镍矿床II-1号矿体为例Extraction of Ore-Controlling Factors Based on Three-Dimensional Geological Model—A Case Study of Jinchuan Cu-Ni Deposit II-1 Orebody
作者:
朱佳玮, 毛先成, 赵莹, 邓浩, 刘占坤, 张苗苗
关键字:
金川铜镍矿床, 三维地质模型, 断层距离场, 岩浆通道距离场, 顶底板相对距离Jinchuan Cu-Ni Deposit II-1 Orebody, Three-Dimensional Geological Model, Euclidean Distance Field of Fault, Euclidean Distance Field of Magma Channel Central Line, Relative Distance between Rock’s Roof and Floor
期刊名称:
《Advances in Geosciences》, Vol.5 No.6, 2015-12-31
摘要:
本文基于金川铜镍矿床II-1号矿体的三维地质模型，结合地质资料以及勘探数据，利用三维空间分析方法对II-1号矿体的控矿因素进行定量提取，提取了岩浆通道骨架中心线距离场，断层距离场以及顶底板相对距离三个控矿因素。分析发现II-1号矿体的铜镍品位与提取的三个控矿因素存在较强相关性，因此可对控矿因素进行线性变换或非线性变换转变成找矿信息指标。此提取方法可应用于整个金川铜镍矿床，对金川铜镍矿床隐伏矿体三维可视化预测有重要意义。
Based on the three-dimension geological model of Jinchuan Cu-Ni sulfide deposit II-1 orebody, com-bined with geology materials and exploration data, this study uses three-dimensional spatial analysis method quantitatively extracted three ore-controlling factors of Jinchuan Cu-Ni sulfide deposit II-1 orebody. Relative distance between rock’s roof and floor and Euclidean distance field of magma channel central line and fault are generated. Analysis shows that there is a certain correlation between Cu and Ni grade of orebodies and ore-controlling factors extracted, thus linear transformation or non-linear transformation can be applied to these ore-controlling factors to construct ore-pros- pecting factors. It has a significant value to the further three-dimensional prediction of hidden orebodies in Jinchuan Cu-Ni sulfide deposit that the method is appropriate for the whole deposit.