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Titre :
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Groundwater modeling for the analysis of active slow-moving landslides (2010)
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Auteurs :
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Leonardo Cascini, Auteur ;
Michele Calvello, Auteur ;
Giuseppe M. Grimaldi, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of geotechnical and geoenvironmental engineering (Vol. 136 N° 9, Septembre 2010)
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Article en page(s) :
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pp. 1220-1230
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Note générale :
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Géotechnique
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Langues :
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Anglais
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Index. décimale :
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624.1 (Infrastructures.Ouvrages en terre. Fondations. Tunnels)
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Tags :
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Active slow-moving landslides Groundwater modeling Landslides displacement scenarios
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Résumé :
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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).
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DEWEY :
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624.1
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ISSN :
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1090-0241
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En ligne :
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http://ascelibrary.org/gto/resource/1/jggefk/v136/i9/p1220_s1?isAuthorized=no
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