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Hydro-Mechanical Modelling of a Natural Slope Affected by a Multiple Slip Surface Failure Mechanism
Ferrari A, Laloui L, Bonnard Ch
Type of Publication:
Reviewed Journal Article
Cmes Computer Modeling in Engineering Sciences, 2009, V52, N3, NOV, pp 217-235.
A coupled hydro-mechanical formulation is presented for the analysis of landslide motion during crisis episodes. The mathematical formulation is used to model a natural slope affected by a multiple slip surface failure mechanism, in which pore water pressure evolution was identified as the main cause for movement accelerations. An elasto-plastic constitutive model is adopted for the behaviour of slip surfaces. Material parameters are obtained by combining the available laboratory tests and the back analysis of some crisis episodes. After being calibrated and validated, the model is applied to improve the understanding of the physical processes involved and to predict the landslide behaviour under different possible scenarios.
1.3 Soil and Lithosphere
Geomorphology , Pedology , Hydrology , Modelling
unsaturated soils; effective stress; landslide; behavior
landslide; hydro mechanical coupling; multiple slip surfaces; unsaturated soil mechanics
L Laloui, Ecole Polytech Fed Lausanne, Soil Mech Lab Lms, Lausanne, Switzerland ; Research Address: A ; Ferrari, L ; Laloui, CH ; Bonnard: Ecole Polytech Fed Lausanne, Soil Mech Lab Lms, Lausanne, Switzerland ; Email: Lyesse.laloui@EPFL.ch
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