Assessment of slope stabilization techniques through a probabilistic approach

Abstract

Stabilization of slopes that are unstable, or that do not possess a sufficient safety margin, is a major challenge faced by geotechnical engineers. Different techniques are adopted for the stabilization purpose. In central Sri Lanka where a number of slope failure are reported in periods of heavy rain, provision of effective surface and sub surface drainage would be the main method for stabilization. In slopes where some movements have already taken place and strength values are somewhat reduced towards the residual values, other means of support in the form of soil nailing, or the use of retaining structures may also be needed.