Abstract: In order to study the impact of excavation and grading construction process on the slope stability of a high cut slope, and to assess the risks caused by improper construction to the slope stability, finite element analysis were performed using PHASE2 software. This paper presents the actual cut slope stability numerical simulation results. The construction loadings and their distributions on the stability were investigated and excessive slope cut on the construction risk was also evaluated. The main conclusions of this paper are as follows: the exposure of the specific rock-soil interface in the slope will form a shear zone and reduce the stability of the slope; if the excavation softens the slope of the crude oil slope, it will help to increase the stability of the slope.

Key words: Slope Stability, Construction, Finite Element Analysis, Risk Analysis