Abstract: Due to the heterogeneity, discontinuity and rheology of the rock mass, the strength parameter determination of the layered rock mass for the rock slope evaluation has many uncertainties. The internal friction angle and the cohesion are the two major strength parameters in the rock slope engineering practice. However, they do not have enough representation for the syncline rock slopes. As a result, the appropriate strength reduction is critical to the success of slope stability evaluations. This paper established the finite element meshes using ANASYS and the numerical simulation was performed by FLAC3D using the strength reduction approach.

Key words: ANSYS, FLAC3D, Strength Reduction, Syncline Rock Slopes, Strength Parameters