| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Evaluation of the risk of marine slope instability: A pseudo-3D approach for application to large areas
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| Autores: |
Sultan, Nabil
Cochonat, Pierre
Bourillet, Jean-francois
Cayocca, Florence
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| Data: |
2001-04
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| Ano: |
2001
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| Palavras-chave: |
Shear strength
Slope stability
Safety factor
Marine sediment
Finite element
Finite difference
Failure
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| 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.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2001/publication-698.pdf
DOI:10.1080/10641190120611
http://archimer.ifremer.fr/doc/00000/698/
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| Editor: |
Taylor & Francis
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| Formato: |
application/pdf
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| Fonte: |
Marine Georesources and Geotechnology (1064-119X) (Taylor & Francis), 2001-04 , Vol. 19 , N. 2 , P. 107-133
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| Direitos: |
2001 Taylor & Francis
info:eu-repo/semantics/openAccess
restricted use
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