Numerical Simulations of Borehole Radar Detection for Metal Ore
Numerical Simulations of Borehole Radar Detection for Metal Ore
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DOI：
10.1109/lgrs.2010.2066545
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发表时间：
2011-03
影响因子：
4.8
通讯作者：
Sixin Liu;Junjun Wu;Junfeng Zhou;Z. Zeng
中科院分区：
文献类型：
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作者：
Sixin Liu;Junjun Wu;Junfeng Zhou;Z. Zeng
对钻孔雷达探测金属矿进行了时域有限差分数值模拟。矿体模型为加拿大萨德伯里岩浆存款型Ni-Cu-Pt矿床模型。我们沿垂直于地层地质走向的横截面沿着设计了三个钻孔，地层由覆盖层、矿带、铁矿层、橄榄岩、花岗片麻岩和沉积物组成。通过对模拟井中雷达剖面的分析，发现某些界面是可以探测到的。矿带对电磁波有很强的吸收性。通过对多个钻孔资料的联合解释，可以利用一些先验地质信息克服钻孔雷达的方位模糊性，从而清晰地圈定地质构造。
We perform a finite-difference time-domain numerical simulation for metal ore detection by borehole radar. The ore-body model is a practical Ni-Cu-Pt one which is a magmatic deposit located in Sudbury, Canada. We design three boreholes along a cross section perpendicular to the geological strike of the formation which is composed of overburden, ore zone, iron formation, peridotite, granite gneiss, and sediments. We analyze the simulated borehole radar profiles and find that some interfaces could be detected. The ore zone is very absorptive to electromagnetic wave. By combined interpretation of the data from several boreholes, the azimuth ambiguity of the borehole radar could be overcome with some a priori geological information, and the geological structure could be delineated clearly.