2017 Volume 32 Pages 147-
A slope stability analysis method has a long history and various stability method have been proposed since the Fellenius method proposed in the 1930s. In practice, a circular slip surface has been generally used to calculate a safety factor, however, for evaluating the stability of reinforced slopes that have complex strata with weak layers, the safety factors obtained by using this method are not always the minimum values. In this study, a calculation method of the safety factor with a noncircular slip surface in unreinforced and reinforced slopes is proposed using a limit equilibrium of Spencer's method. To validate the proposed method, the calculated safety factor by the proposed method compares with the previously presented results.
