Volume 6, Issue 1 (March 2008)
IJCE 2008, 6(1): 10-23 |
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Askari F, Farzaneh O. Pore water pressures in three dimensional slope stability analysis. IJCE 2008; 6 (1) :10-23
URL: http://ijce.iust.ac.ir/article-1-204-en.html
URL: http://ijce.iust.ac.ir/article-1-204-en.html
Abstract: (11653 Views)
Although some 3D slope stability algorithms have been proposed in recent three decades, still role
of pore pressures in three dimensional slope stability analyses and considering the effects of pore water
pressure in 3D slope stability studies needs to be investigated. In this paper, a limit analysis formulation for
investigation of role of the pore water pressure in three dimensional slope stability problems is presented. A
rigid-block translational collapse mechanism is used, with energy dissipation taking place along planar
velocity discontinuities. Results are compared with those obtained by others. It was found that water pressure
causes the three-dimensional effects to be more significant, especially in gentle slopes. This may be related to
the larger volume of the failure mass in gentle slopes resulting in more end effects. Dimensionless stability
factors for three dimensional slope stability analyses are presented - including the 3D effect of the pore water
pressure – for different values of the slope angle in cohesive and noncohesive soils.
Type of Study: Research Paper |
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