The purpose of stability analysis is to determine the factor of safety of a potential failure surface. The factor of safety is defined as a ratio between the resisting force and the driving force, both applied along the failure surface. When the driving force due to weight is equal to the resisting force due to shear strength, the factor of safety is equal to 1 and failure is imminent. Figure 2.1 shows several types of failure surfaces.
KeywordsShear Strength Pore Pressure Slip Surface Failure Surface Failure Plane
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