Stability Analysis of Landslides

Abstract

It seems to be a recent trend to analyze landslides by the Swedish Circular Arc Method, and few engineers are re-examining the problem. Landslides usually occur on infinite slopes.
In this case, factor of safety of “circular arc slide” decreases as the radius of slip surface increases, and the lowest factor of safty is found in “plane surface slide” under the most extreme conditions.
Therefore, most cases of landslides should be analyzed by the Plane Surface Slide Method.
This paper presents, purely from the soil-mechanical point of view, the investigation of slide damage on slopes in order to obtain a more precise factor of safety to apply for design of a countermeasure against landslides.