EPJ Web Conf.
Volume 140, 2017Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Cohesive granular materials|
|Published online||30 June 2017|
Physics of soil erosion at the microscale
1 IRSTEA, UR RECOVER, 3275 route de Cézanne, 13182 Aix-en-Provence, France
2 BAM, Division 7.2 Buildings and Structures, Unter den Eichen 87, 12205 Berlin, Germany
3 UMR IATE, INRA/CIRAD/Montpellier SupAgro, 2 place Pierre Viala, 34060 Montpellier, France
* e-mail: email@example.com
Published online: 30 June 2017
We focus here on the major and always topical issue of soil erosion by fluid flows, and more specifically on the determination of both a critical threshold for erosion occurrence and a kinetics that specifies the rate of eroded matter entrainment. A synthetic state-of-the-art is first proposed with a critical view on the most commonly used methods and erosion models. It is then discussed an alternative strategy, promoting the use of model materials that allow systematic parametric investigations with the purpose of first identifying more precisely the local mechanisms responsible for soil particle erosion and second ultimately quantifying both critical onsets and kinetics, possibly through existing or novel empirical erosion laws. Finally, we present and discuss several examples following this methodology, implemented either by means of experiments or numerical simulations, and coupling erosion tests in several particular hydrodynamical configurations with wisely selected mechanical tests.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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