Data/hora: 03/06/2024 19:03:41

Provedor de dados: | 5
País: | France
Título: | Evaluation of the risk of marine slope instability: A pseudo-3D approach for application to large areas
Autores: | Sultan, Nabil; Cochonat, Pierre; Bourillet, Jean-francois; Cayocca, Florence.
Data: | 2001-04
Ano: | 2001
Palavras-chave: | Shear strength; Slope stability; Safety factor; Marine sediment; Finite element; Finite difference; Failure.
Resumo: | This article presents a methodology developed to evaluate the instability of submarine slopes that extend over a large area. Special attention was paid to (1) the complex geometry (bathymetry) and the expanse of the slope, (2) the heterogeneity of the sediment, and (3) the distribution of the pore pressure. The safety factor was considered as a spatially varying quantity. The General Formulation (GLE, Fredlund and Krahn 1977), which fully satisfies equilibrium conditions, was used for evaluating the stability of the marine slope. The submarine slope failure, which occurred on 16 October 1979 during the construction of the new Nice airport, was studied in order to test the developed model. Geotechnical parameters were taken from experimental tests carried out by IFREMER on 19 cores extracted at different depths (from 27 m to 1300 m) (Cochonat, Bourillet and Savoye, 1993; Mulder et al., 1994). Many scenarios were proposed in order to explain the cause of the Nice slope failure (Habib, 1994). In this article, two of those scenarios were tested. Simulation results are presented and discussed.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2001/publication-698.pdf

DOI:10.1080/10641190120611

http://archimer.ifremer.fr/doc/00000/698/

Editor: | Taylor &amp; Francis
Formato: | application/pdf
Fonte: | Marine Georesources and Geotechnology (1064-119X) (Taylor &amp; Francis), 2001-04 , Vol. 19 , N. 2 , P. 107-133

Fonte:

2001 Taylor &amp; Francis

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