Slope Stability Analysis by Bishop Analysis Using MATLAB Program Based on Particle Swarm Optimization Technique

Abstract

This paper deals with slope stability analysis by Bishop analysis using MATLAB program based upon particle swarm optimization (PSO) technique. The technique utilizes method of slices using limit equilibrium analysis based upon static equilibrium of model in order to calculate critical slip surface and minimum factor of safety for calculating the stability of a slope. The study utilizes Slope/W software. In Slope/W software, four limit equilibrium methods are used for analysis of slopes, which are, Bishop, Morgenstern-Price, Janbu and Spencer method. Among these methods, Bishop’s method of slices was applied by utilizing particle swarm optimization technique in MATLAB program. The soil properties used in this analysis were determined by laboratory investigations of soil samples collected from the field. Subsequently, results are compared with the existing software, Geo Studio which uses Monte-Carlo simulations for optimizing the solution. This comparison demonstrates the efficiency and capability of PSO method for slope stability analysis problems.