Accéder directement au contenu Accéder directement à la navigation
Communication dans un congrès

A novel approach to integrate effects of vegetation changes on slope stability

Rosalie Vandromme 1 Nicolas Desramaut 1 Christophe Garnier 2 Séverine Bernardie 1
1 DRP/RIG
BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
2 AQI
BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
Abstract : Global changes would have direct impacts on landslide activities through the modifications of triggering events with the evolutions of climate forcing. Howev-er, some predisposing factors would also evolve. Indeed, forests are likely to be modified, either by anthropogenic interventions, natural ageing or adaptation to climate change. This evolution is likely to result in changes of slopes susceptibili-ties to landslides. In order to propose adequate solutions for current and future for-estry management, it is therefore necessary to properly estimate the influences of the vegetation on slope stabilities. In the present study, we develop a complementary module to our large-scale slope stability assessment tool to take into account the effects of vegetation on the mechanical soil properties (cohesion and over-load), but also on the slope hydrol-ogy (change in interceptions, run-off, and infiltration). Hence the proposed meth-od combines a mechanical stability model (using finite slope analysis), a hydro-logical model, and a vegetation module which interfere with both aspects. All these elements are interfaced within a GIS-based solution. Uncertainties on input data are propagated in the models through distributions laws. The method has first been applied to a Pyrenean Valley, a site which is part of the Observatoire Pyré-néen du Changement Climatique (OPCC). A second application is being under-taken on another Pyrenean Valley, for the ANR Project SAMCO.
Type de document :
Communication dans un congrès
Liste complète des métadonnées

https://hal-brgm.archives-ouvertes.fr/hal-00988268
Contributeur : Nicolas Desramaut <>
Soumis le : mercredi 7 mai 2014 - 16:56:27
Dernière modification le : lundi 22 juin 2020 - 11:50:03

Identifiants

  • HAL Id : hal-00988268, version 1

Collections

Citation

Rosalie Vandromme, Nicolas Desramaut, Christophe Garnier, Séverine Bernardie. A novel approach to integrate effects of vegetation changes on slope stability. XII International IAEG Congress : International Association for Engineering Geology and the Environment, Sep 2014, Turin, Italy. ⟨hal-00988268⟩

Partager

Métriques

Consultations de la notice

109