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Rock Stability 

GEO5

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Rock - shear resistance criteria

The shear strength is the basic criterion to determine resisting passive forces. The resisting force is given by the following expression:

where: τ - shear strength on the slip surface
l - length of the slip surface

The shear strength for the planar slip surface can be written as:

- Mohr - Coulomb
- Hoek - Brown
- Barton - Bandis



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