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Slope Stability Example - Non-Homogeneous Stratigraphy

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


xslopestex9.jpg__1170x0_q85_subsampling-2_upscale.jpg.pagespeed.ic.dZ96igJny_.webp

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


xslopestex10.jpg__1170x0_q85_subsampling-2_upscale.jpg.pagespeed.ic.l-5DytIPTU.webp

Figure 2 – General Limit Equilibrium - Normal model solution


xslopestex11.jpg__1170x0_q85_subsampling-2_upscale.jpg.pagespeed.ic.uCRF5Gs1Tz.webp

Figure 3 – General Limit Equilibrium – Reversed model solution



 

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