Reliability and Fuzzy Logic Concepts as Applied to Slope Stability Analysis – A Review

Considerable uncertainty exist with regard to stability of slopes due to several factors and recognition of these\ud uncertainties has made designees to introduce factor of safety. Several studies, during recent years on analytical\ud methods using soil properties have improved understanding the several uncertainties. The reliability analysis of\ud slopes can be used to represent uncertainty in mathematical models, which can be assumed to follow the\ud characteristic of random uncertainty. The distribution uncertain variable, which is unknown, makes its\ud estimation difficult. Hence, the concepts of fuzzy set theory appear to be quite reliable when limited\ud information is available. This paper attempts to review the slope stability problem and deals with the intricacies\ud of the concept of reliability and fuzzy logic as applied to stability analysis of slope. It has been suggested that the\ud FOSM algorithm provides a general agreement among the different slope stability solutions