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Abstract

Summary

Levee assessment recognized methodologies imply setting up investigation campaigns, including geophysical and geotechnical investigation methods. A major issue is to combine the geotechnical and geophysical data, taking into consideration their respective levels of uncertainties, inaccuracies and incompleteness as well as spatial distributions. In this work we propose the results of a fusion methodology based on the use of Belief Functions and two combination rules, to merge geotechnical (cone penetrometer and grain size distribution) and geophysical (electrical resistivity) data, acquired on a real fluvial levee. We display an enhancement of the results obtained in previous work, considering a new way of assigning geophysical belief masses, a different classification index for the penetrometer test data (Ic) and an additional combination rule (Proportional Conflict Rule n°6). We highlight the ability of this fusion methodology to discriminate the constitutive sets of geological materials inside an earthen levee with an associated confidence level. We also demonstrate the relevance of the improvements in the methodology comparatively with the past results.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202020016
2020-12-07
2024-04-28

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References

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Levee Characterization by Means of Geophysical and Geotechnical Data Fusion: Improvements in Methodology
Conference Proceedings 2020, 1 (2020); https://doi.org/10.3997/2214-4609.202020016
/content/papers/10.3997/2214-4609.202020016
/content/papers/10.3997/2214-4609.202020016
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