Groundwater modeling for the analysis of active slow-moving landslides / Leonardo Cascini in Journal of geotechnical and geoenvironmental engineering, Vol. 136 N° 9 (Septembre 2010)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 136 N° 9 (Septembre 2010) . - pp. 1220-1230 Titre : Groundwater modeling for the analysis of active slow-moving landslides Type de document : texte imprimé Auteurs : Leonardo Cascini, Auteur ; Michele Calvello, Auteur ; Giuseppe M. Grimaldi, Auteur Année de publication : 2010 Article en page(s) : pp. 1220-1230 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Active slow-moving landslides Groundwater modeling Landslides displacement scenarios Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Active slow-moving landslides in clayey soils exhibit continuous movements generally controlled both in the accelerating and decelerating phases by the pore-water pressure regime that, in turn, is strictly correlated to the net rainfall regime. The paper stresses the importance of a reliable groundwater model to predict these types of movements. To this aim a procedure is proposed to define the transient groundwater regime in the slope on the basis of recorded rainfall and monitoring data; the model is then used to derive the time-dependent shear strength along the main slip surfaces. The displacements at selected points along the slip surface are computed using a phenomenological (i.e., empirical) relationship between the local factor of safety and the displacement rate at those points. The procedure is employed for the analysis of a well-documented case history: the Porta Cassia landslide (central Italy). DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i9/p1220_s1?isAuthorized=no [article] Groundwater modeling for the analysis of active slow-moving landslides [texte imprimé] / Leonardo Cascini, Auteur ; Michele Calvello, Auteur ; Giuseppe M. Grimaldi, Auteur . - 2010 . - pp. 1220-1230. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 9 (Septembre 2010) . - pp. 1220-1230 Mots-clés : Active slow-moving landslides Groundwater modeling Landslides displacement scenarios Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Active slow-moving landslides in clayey soils exhibit continuous movements generally controlled both in the accelerating and decelerating phases by the pore-water pressure regime that, in turn, is strictly correlated to the net rainfall regime. The paper stresses the importance of a reliable groundwater model to predict these types of movements. To this aim a procedure is proposed to define the transient groundwater regime in the slope on the basis of recorded rainfall and monitoring data; the model is then used to derive the time-dependent shear strength along the main slip surfaces. The displacements at selected points along the slip surface are computed using a phenomenological (i.e., empirical) relationship between the local factor of safety and the displacement rate at those points. The procedure is employed for the analysis of a well-documented case history: the Porta Cassia landslide (central Italy). DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i9/p1220_s1?isAuthorized=no

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