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Abstract

Summary

In this paper, we presented an approach on how to consider the electrode effect on micro-electrical resistivity tomography data. The case study is set on an underground quarry wall under a fire. The used dispositive is made up of 24 rode-like electrodes that reach a depth of about half the electrode spacing. We demonstrate that at such a small scale, with a spacing of 4cm and for a homogeneous model, the effect is diminished with the presence of a superficial conductive layer. We suggested here a methods to do so: by modelling the half-space with complete electrode and by searching for an equivalent EEP depth. Such depth can then be implemented on the real data field for the inversion. We demonstrate here that the electrode effect is also lowered in case of a first conductive layer on field. We also showed that the fire created a first conductive layer and an intermediate layer from 3 to 15 cm that is more resistive than before the fire, where we had a two layers medium (conductive over resistive layer).

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/content/papers/10.3997/2214-4609.201702072
2017-09-03
2024-04-24

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201702072
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Electrode Influence on Micro-ERT Field Dataset Subjected to Fire
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201702072
/content/papers/10.3997/2214-4609.201702072
/content/papers/10.3997/2214-4609.201702072
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