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

被引：28
作者：
Francois, B.
Tacher, L.
Bonnard, Ch.
Laloui, L.
Triguero, V.
机构：
[1] Ecole Polytech Fed Lausanne, Soli Mech Lab, CH-1015 Lausanne, Switzerland
[2] Ecole Polytech Fed Lausanne, Engn & Environm Geol Lab, CH-1015 Lausanne, Switzerland
来源：
CANADIAN GEOTECHNICAL JOURNAL | 2007年 / 44卷 / 07期
关键词：
landslides; slope movement; hydromechanical coupling; elastoplasticity; numerical modelling;
D O I：
10.1139/T07-028
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
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.
引用
收藏
页码：840 / 857
页数：18
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