Slope Stability Example - Non-homogeneous Stratigraphy
This example presents a slope stability analyis for a slope with non-homogeneous stratigraphy (three layer slope). The factor of safety and its corresponding critical circular failure surface is required.
Table 1: Material Properties
c΄ (kN/m2) | φ΄ (deg.) | γ (kN/m3) | |
Soil 1 | 0.0 | 38.0 | 19.5 |
Soil 2 | 5.3 | 23.0 | 19.5 |
Soil 3 | 7.2 | 20.0 | 19.0 |
Figure 1- Model of the problem
Method: GLE | Factor of Safety |
Normal model | 1.378 |
Reversed model | 1.384 |
Note : Referee Factor of Safety = 1.39 [Giam]
Mean Bishop FOS (16 samples) = 1.406
Mean FOS (31 samples) = 1.381
Figure 2 – General Limit Equilibrium - Normal model solution
Figure 3 – General Limit Equilibrium – Reversed model solution
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