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http://dx.doi.org/10.7582/GGE.2013.16.4.257

A Study of 3D Ore-Modeling by Integrated Analysis of Borehole and Geophysical Data  

Noh, Myounggun (Dept. of Energy & Resource Engineering Kangwon National University)
Oh, Seokhoon (Dept. of Energy & Resource Engineering Kangwon National University)
Ahn, Taegyu (Research Institute, Geolux. Co., Ltd.)
Publication Information
Geophysics and Geophysical Exploration / v.16, no.4, 2013 , pp. 257-267 More about this Journal
Abstract
3-D ore modeling was performed to understand the configuration of ore bodies by integrated analysis of borehole and geophysical data in iron-mine area. Five representative indices of rocks were designated, which were obtained from geological survey and borehole. The five indices of rocks were geostatistically simulated by Sequential Indicator Simulation method to delineate boundary of the ore bodies. And Ordinary Kriging and Sequential Gaussian Simulation was applied to make secondary information using resistivity data from magnetotellurics and DC resistivity survey, and this information was used for simple kriging with local varying means, one of integrated kriging techniques. From the correlation analysis between each properties, it was found that high grade of ore is characterized by increased density, whereas the electrical resistivity decreases. With the integrated results of geophysical and borehole data, it was also found that the real configuration of ore body was similar to the modeled result and information about ore grade in 3-D space was obtained.
Keywords
borehole data; geophysical data; geostatistical method; ore-modeling; Simple Kriging with Local varying means;
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Times Cited By KSCI : 1  (Citation Analysis)
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