https://doi.org/10.1051/epjconf/201714009038
Erosion of cohesive soil layers above underground conduits
1 IRSTEA, UR RECOVER, 3275 route de Cézanne, 13182 Aix-en-Provence, France.
2 BRGM, DRP (Direction Risques et Prévention), 3 Av. Claude Guillemin, BP 36009, 45060 Orléans Cedex 2
3 BRGM, D3E (Direction Eau, Environnement, Ecotechnologies), 3 Av. Claude Guillemin, BP 36009, 45060 Orléans Cedex 2
* e-mail: li-hua.luu@irstea.fr
Published online: 30 June 2017
Using a recently developed 2D numerical modelling that combines Discrete Element (DEM) and Lattice Boltzmann methods (LBM), we simulate the destabilisation by an hydraulic gradient of a cohesive granular soil clogging the top of an underground conduit. We aim to perform a multi-scale study that relates the grain scale behavior to the macroscopic erosion process. In particular, we study the influence of the flow conditions and the inter-particle contact forces intensity on the erosion kinetic.
© 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.
