Prediction of Slow-Moving Landslide Mobility Due to Rainfall Using a Two-Wedges Model

In the present study, the landslides cyclically reactivated by water-table oscillations due to rainfall are dealt with. The principal kind of motion that usually characterizes such landslides is a slide with rather small velocity. As another feature, soil deformations are substantially accumulated i...

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Bibliographic Details
Published inWater (Basel) Vol. 13; no. 15; p. 2030
Main Authors Troncone, Antonello, Pugliese, Luigi, Parise, Andrea, Conte, Enrico
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2021
Subjects
Exact solutions
Groundwater
landslide movements
Landslides
Landslides & mudslides
Mobility
Oscillations
Rain
Rainfall
Shear strength
Shear zone
Soil analysis
two-wedges model
Viscosity
Water table
water table oscillations
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Summary:In the present study, the landslides cyclically reactivated by water-table oscillations due to rainfall are dealt with. The principal kind of motion that usually characterizes such landslides is a slide with rather small velocity. As another feature, soil deformations are substantially accumulated inside a narrow shear zone situated below the landslide body so that the latter approximately slides rigidly. Within this framework, a new approach is developed in this paper to predict the mobility of this type of landslides due to rainfall. To this end, a two-wedges model is used to schematize the moving soil mass. Some analytical solutions are derived to link rain recordings with water-table fluctuations and in turn to landslide displacements. A well-documented landslide frequently activated by rainfall is studied to check the forecasting capacity of the proposed method.
ISSN:2073-4441
2073-4441
DOI:10.3390/w13152030