Analytical Calculation for slope stability based on the Combination of Horizontal Slice Method and Oblique Slice Method

Abstract

An analytical method for analyzing the stability of the homogeneous slope based on horizontal slice method is presented. A combination model of horizontal slice and oblique slice are used for analysis the inter-slice forces. The analytical expression of factor of safety is obtained with the assumption that the shear strength of soil meets the Mhor-Coublum strength criterion. The position of critical slip surface and its corresponding factor of safety computed by the development of the optimization technique are in good agreement with Bishop’s method. The advantages of presented method are straightforward in analyzing the stability of slope.