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Slope Stability
Bishop
The simplified Bishop method assumes zero Xi forces between blocks. The method is based on satisfying the moment equation of equilibrium and the vertical force equation of equilibrium.
The factor of safety FS is found through a successive iteration of the following expression:
| where: | ui | - | pore pressure within block |
| ci, φi | - | effective values of soil parameters | |
| Wi | - | block weight | |
| αi | - | inclination of the segment of the slip surface | |
| bi | - | horizontal width of the block |
Literature:
Bishop, A.W. (1955) "The Use of the Slip Circle in the Stability Analysis of Slopes", Geotechnique, Great Britain, Vol. 5, No. 1, Mar., pp. 7-17
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