Earth
Landslide: water weakens a slope
Increase pore pressure and compare driving stress with friction and cohesion before a slope begins to slide.
Try this
Increase saturation until the factor of safety falls below one. Compare with a steeper slope or weaker cohesion.
The model and its limits
Infinite-slope effective stress followed by a sliding-block model. Displacement and thickness are visually scaled. Not a prediction for a real slope.
Equations used in the module
Equations FS = (c + (sigma_n - u) tan(phi)) / tau
