Numerical modelling of the hydrogeological and geomechanical behaviour of a large slope movement: The Triesenberg landslide (Liechtenstein).

François, Bertrand; Tacher, Laurent; Bonnard, Christophe; Laloui, Lyesse; Triguero, Véronique

doi:10.1139/T07-028

Article (Scientific journals)

Numerical modelling of the hydrogeological and geomechanical behaviour of a large slope movement: The Triesenberg landslide (Liechtenstein).

François, Bertrand; Tacher, Laurent; Bonnard, Christophe et al.

2007 • In Canadian Geotechnical Journal, 44 (7), p. 840-857

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/26913

DOI
10.1139/T07-028

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Keywords :

Landslide; slope movement; hydromechanical coupling; elasto-plasticity; numerical modelling

Abstract :

[en] Using advanced hydrogeological and geomechanical finite element modelling, it has been possible to model the mechanical behaviour of a large slope movement, the Triesenberg landslide. This slope is located along the Rhine valley in the Principality of Liechtenstein and covers an area of around 5 km(2), which includes two villages. Pore-water pressure fields calculated by the hydrogeological model were used as input for the geomechanical model. The results obtained through numerical simulation agree fairly well with field measurements of peak velocity, spatial and temporal distribution of velocity, and total displacements. Such results were obtained using a modified Cam-Clay elastoplastic constitutive model for which the required material parameters were obtained through careful geotechnical tests. These finite element models were carried out in two and three dimensions to gradually improve the understanding of the physical phenomena governing the hydrogeological conditions and the movements of the slope.

Disciplines :

Civil engineering

Author, co-author :

François, Bertrand ; Ecole Polytechnique Fédérale de Lausanne - EPFL > Soil Mechanics Laboratory

Tacher, Laurent

Bonnard, Christophe

Laloui, Lyesse

Triguero, Véronique

Language :

English

Title :

Numerical modelling of the hydrogeological and geomechanical behaviour of a large slope movement: The Triesenberg landslide (Liechtenstein).

Publication date :

2007

Journal title :

Canadian Geotechnical Journal

ISSN :

0008-3674

eISSN :

1208-6010

Publisher :

NRC Research Press, Ottawa, Canada

Volume :

Issue :

Pages :

840-857

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 27 October 2009

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