Modeling of Rainfall-Induced Shallow Landslides of the Flow-Type

Leonardo Cascini, Sabatino Cuomo, Manuel Pastor, Giuseppe Sorbino
2010 Journal of Geotechnical and Geoenvironmental Engineering  
Landslides of the flow-type are frequently triggered by rainfall as shallow landslides in different types of soils and geo-environmental contexts. When involving open slopes, these landslides often occur in triangular source areas where initial slides turn into avalanches through further failures and/or eventual soil entrainment. Similar phenomena are frequently observed in layered snow deposits and they are also recognised in ashy deposits on Mars. Significant examples are systematically
more » ... ystematically recorded in Southern Italy where pyroclastic deposits overlie carbonate massifs. Particularly, in May 1998, rainfall triggered many destructive triangular shallow landslides of the flow-type along the slopes of Pizzo d'Alvano massif (Sarno-Quindici event). The available data-set allowed their failure and post-failure stages to be modelled. Numerical analyses were performed using limit equilibrium as well as hydro-mechanical coupled and uncoupled stress-strain approaches. The obtained results are discussed in the paper, providing a preliminary framework for this type of slope instability phenomena that is poorly addressed in the current literature.
doi:10.1061/(asce)gt.1943-5606.0000182 fatcat:j6isnj5aszdsfijmkpkoy67sce