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• W4313594322 endingPage "106978" @default.
• W4313594322 startingPage "106978" @default.
• W4313594322 abstract "The increase of pore water pressure due to rainfall infiltration or upstream recharge is among the primary triggers of landslides, and soil layering has a significant effect on the hydromechanical behavior of the slope. The failure and post-failure behavior of heterogeneous layered slopes triggered by these phenomena are investigated in this study. In particular, a low permeability layer is embedded in a reference slope with different inclinations, and the impact of different saturation mechanisms on the post-failure behavior is assessed. To this aim, an unsaturated formulation of the Material Point Method (MPM) is used to reproduce the whole deformation process of a layered slope. The results show different failure and post-failure mechanisms and kinematics for both upstream recharge and rainfall infiltration (i.e., bottom-up and top-down saturation processes, respectively). Bottom-up saturation mechanism triggers deep failure mechanisms that barely evolve during the instability process. On the contrary, top-down saturation mechanism induces an anticipated shallow semi-planar failure limited by the location of the low permeable layer. These failures are characterized by high velocities and by a deepening of the slip surface during the post-failure process. Final displacements in both wetting mechanisms are of the same order of magnitude. The subsequent reactivation movements are observed as a result of the continuous injection of water in the system." @default.
• W4313594322 created "2023-01-06" @default.
• W4313594322 creator A5060406002 @default.
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• W4313594322 date "2023-02-01" @default.
• W4313594322 modified "2023-10-16" @default.
• W4313594322 title "Wetting induced instabilities in layered slopes: A Material Point Method analysis" @default.
• W4313594322 cites W1977472888 @default.
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• W4313594322 doi "https://doi.org/10.1016/j.enggeo.2022.106978" @default.
• W4313594322 hasPublicationYear "2023" @default.
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