Electrical-resistivity characterization of an industrial site using long electrodes
Electrical-resistivity characterization of an industrial site using long electrodes
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DOI：
10.1190/1.3464806
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发表时间：
2010-07
期刊：
影响因子：
3.3
通讯作者：
D. Rucker;Meng H. Loke;M. T. Levitt;G. Noonan
中科院分区：
文献类型：
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作者：
D. Rucker;Meng H. Loke;M. T. Levitt;G. Noonan
在美国华盛顿州汉福德核电站的T油罐区完成了电阻率测量。测量的目的是确定油罐区及其周围渗流区中废物羽流的横向范围。T罐区由历史上曾发生泄漏的单壳储罐和许多液体废物处理设施组成，这些设施为电阻率测绘提供了良好的目标。鉴于该场址高度工业化，近地表的金属基础设施可能掩盖任何可解释的废物羽流，因此有必要将场址周围的许多威尔斯井用作长电极。为了适应长电极和模拟线性导体的影响，电阻率反演代码进行了修改，以分配低电阻率值的井的位置。电阻率代码内的正演模型进行了基准测试的准确性对一个解析解，和逆模型进行了测试，其能力，以重建图像的一个假设的目标…
An electrical-resistivity survey was completed at the T tank farm at the Hanford nuclear site in Washington State, U.S.A. The purpose of the survey was to define the lateral extent of waste plumes in the vadose zone in and around the tank farm. The T tank farm consists of single-shell tanks that historically have leaked and many liquid-waste-disposal facilities that provide a good target for resistivity mapping. Given that the site is highly industrialized with near-surface metallic infrastructure that potentially could mask any interpretable waste plume, it was necessary to use the many wells around the site as long electrodes. To accommodate the long electrodes and to simulate the effects of a linear conductor, the resistivity inversion code was modified to assign low-resistivity values to the well’s location. The forward model within the resistivity code was benchmarked for accuracy against an analytic solution, and the inverse model was tested for its ability to recreate images of a hypothetical targe...