Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese
Prediction of landslide hazard risk at hill slope induced by intense rainfall requires the appropriate modeling of the interactions between soil and weather phenomena, leading to failure as well as a reliable prediction of post-failure dynamics. In the peculiar case of fast shallow landslides behavi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-09-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/12/9/2555 |
| _version_ | 1797553797443092480 |
|---|---|
| author | Sauro Manenti Andrea Amicarelli Nunziarita Palazzolo Massimiliano Bordoni Enrico Creaco Claudia Meisina |
| author_facet | Sauro Manenti Andrea Amicarelli Nunziarita Palazzolo Massimiliano Bordoni Enrico Creaco Claudia Meisina |
| author_sort | Sauro Manenti |
| collection | DOAJ |
| description | Prediction of landslide hazard risk at hill slope induced by intense rainfall requires the appropriate modeling of the interactions between soil and weather phenomena, leading to failure as well as a reliable prediction of post-failure dynamics. In the peculiar case of fast shallow landslides behaving like dense granular flows, a suitable modeling approach for large and rapid deformations is necessary to estimate potential related damage. The impact force exerted by the leading edge of the earth-flow on the downstream structure should be estimated for both damage prediction and design of effective protection measures. In this paper, a free open source 3D research code based on standard weakly compressible smoothed particle hydrodynamics (WCSPH) method is validated by modeling a full-scale rainfall-induced shallow landslide which occurred in Oltrepò Pavese (Northern Italy). The code allows resolving the vertical velocity gradients, potentially providing a more reliable representation of the landslide dynamics and impact force. Mechanical parameters are consistent with average soil characteristics, avoiding calibration analysis. The final landslide profile is compared with an experimental survey for model validation, showing good fit. Influence of uncertainties of geotechnical parameters on the landslide front velocity and impact force on the downstream wall is evaluated. |
| first_indexed | 2024-03-10T16:22:42Z |
| format | Article |
| id | doaj.art-9f8dfa86365245df9a4fe507bd3ab81d |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T16:22:42Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-9f8dfa86365245df9a4fe507bd3ab81d2023-11-20T13:34:11ZengMDPI AGWater2073-44412020-09-01129255510.3390/w12092555Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò PaveseSauro Manenti0Andrea Amicarelli1Nunziarita Palazzolo2Massimiliano Bordoni3Enrico Creaco4Claudia Meisina5Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, 27100 Pavia, ItalyRicerca sul Sistema Energetico-RSE SpA, Department SFE, via Rubattino, 54, 20134 Milan, ItalyDepartment of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, 27100 Pavia, ItalyDepartment of Earth and Environmental Sciences, University of Pavia, Via Ferrata 1, 27100 Pavia, ItalyDepartment of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, 27100 Pavia, ItalyInterdepartmental Centre for Water Research, University of Pavia, via Ferrata 3, 27100 Pavia, ItalyPrediction of landslide hazard risk at hill slope induced by intense rainfall requires the appropriate modeling of the interactions between soil and weather phenomena, leading to failure as well as a reliable prediction of post-failure dynamics. In the peculiar case of fast shallow landslides behaving like dense granular flows, a suitable modeling approach for large and rapid deformations is necessary to estimate potential related damage. The impact force exerted by the leading edge of the earth-flow on the downstream structure should be estimated for both damage prediction and design of effective protection measures. In this paper, a free open source 3D research code based on standard weakly compressible smoothed particle hydrodynamics (WCSPH) method is validated by modeling a full-scale rainfall-induced shallow landslide which occurred in Oltrepò Pavese (Northern Italy). The code allows resolving the vertical velocity gradients, potentially providing a more reliable representation of the landslide dynamics and impact force. Mechanical parameters are consistent with average soil characteristics, avoiding calibration analysis. The final landslide profile is compared with an experimental survey for model validation, showing good fit. Influence of uncertainties of geotechnical parameters on the landslide front velocity and impact force on the downstream wall is evaluated.https://www.mdpi.com/2073-4441/12/9/2555rainfall-induced shallow landslidepost failure dynamicssoil-water interactionvalidationnon-Newtonian fluidWCSPH |
| spellingShingle | Sauro Manenti Andrea Amicarelli Nunziarita Palazzolo Massimiliano Bordoni Enrico Creaco Claudia Meisina Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese Water rainfall-induced shallow landslide post failure dynamics soil-water interaction validation non-Newtonian fluid WCSPH |
| title | Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese |
| title_full | Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese |
| title_fullStr | Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese |
| title_full_unstemmed | Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese |
| title_short | Post-Failure Dynamics of Rainfall-Induced Landslide in Oltrepò Pavese |
| title_sort | post failure dynamics of rainfall induced landslide in oltrepo pavese |
| topic | rainfall-induced shallow landslide post failure dynamics soil-water interaction validation non-Newtonian fluid WCSPH |
| url | https://www.mdpi.com/2073-4441/12/9/2555 |
| work_keys_str_mv | AT sauromanenti postfailuredynamicsofrainfallinducedlandslideinoltrepopavese AT andreaamicarelli postfailuredynamicsofrainfallinducedlandslideinoltrepopavese AT nunziaritapalazzolo postfailuredynamicsofrainfallinducedlandslideinoltrepopavese AT massimilianobordoni postfailuredynamicsofrainfallinducedlandslideinoltrepopavese AT enricocreaco postfailuredynamicsofrainfallinducedlandslideinoltrepopavese AT claudiameisina postfailuredynamicsofrainfallinducedlandslideinoltrepopavese |