Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steady State Seepage Pore Water Pressures' Influence in the Slope Stability Analysis of Levees
The geotechnical practice has long known and recognized that increases in pore water pressures associated with the development of the steady state seepage condition result in an associated decrease in effective stress in the soil. This decrease in effective stresses results in a reduction of the available effective strength of the soil. When artesian conditions develop in the field, the large pore water pressures trapped below a low permeability soil layer can lead to essentially zero effective strength. Under these conditions, the calculated slope stability factor of safety can be reduced to much less than half. Conditions that lead to artesian pore water pressures are commonly encountered in areas protected by levees, where a relatively thin, low permeability blanket overlays a permeable aquifer. This paper analyzes the influence of the pore water pressures in the calculated factor of safety for a wide range of conditions commonly encountered in the field.
Steady State Seepage Pore Water Pressures' Influence in the Slope Stability Analysis of Levees
The geotechnical practice has long known and recognized that increases in pore water pressures associated with the development of the steady state seepage condition result in an associated decrease in effective stress in the soil. This decrease in effective stresses results in a reduction of the available effective strength of the soil. When artesian conditions develop in the field, the large pore water pressures trapped below a low permeability soil layer can lead to essentially zero effective strength. Under these conditions, the calculated slope stability factor of safety can be reduced to much less than half. Conditions that lead to artesian pore water pressures are commonly encountered in areas protected by levees, where a relatively thin, low permeability blanket overlays a permeable aquifer. This paper analyzes the influence of the pore water pressures in the calculated factor of safety for a wide range of conditions commonly encountered in the field.
Steady State Seepage Pore Water Pressures' Influence in the Slope Stability Analysis of Levees
Perri, J. F. (Autor:in) / Shewbridge, S. E. (Autor:in) / Cobos-Roa, D. A. (Autor:in) / Green, R. K. (Autor:in)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 604-613
29.03.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Steady State Seepage Pore Water Pressures' Influence in the Slope Stability Analysis of Levees
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