Foam is to be used as a blocking agent for confining a pollutant source zone and avoid spreading in an aquifer. To this end, it is necessary to determine where injected foam flows and stays inside a porous medium. This study examines the use of electrical resistivity tomography for this purpose. Foam is injected in a large-scale 3D heterogeneous porous medium (0.84 × 0.84 × 0.84 m). During the injection, electrical resistivity tomography measurements are performed. We show that combining a large number of measurements with inversion techniques allows for the monitoring of a foam front in 3D during the injection process.

中文翻译：

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在 3D 异质多孔介质中跟踪泡沫前沿

泡沫将用作封闭剂以限制污染源区并避免在含水层中扩散。为此，有必要确定注入的泡沫在哪里流动并停留在多孔介质内。本研究检查了电阻率断层扫描为此目的的使用。泡沫被注入大型 3D 非均质多孔介质 (0.84 × 0.84 × 0.84 m)。在注射过程中，进行电阻率断层扫描测量。我们表明，将大量测量与反演技术相结合，可以在注射过程中以 3D 形式监测泡沫前沿。