关键词: 强度折减, 安全系数, 等效Mohr-Coloumb准则, 广义Hoek-Brown准则, 边坡稳定

Abstract: The traditional Strength Reduction Technique (SRT) was based on the linear Mohr-Coloumb criterion, and the analysis result is reliable for the general soil materials. However, to the rock material whose stress-strain characteristic is nonlinear, the Generalized Hoek-Brown criterion is much more accurate. In this paper, the Equivalent Mohr-Coloumb criterion was adopted, and it takes the advantage of Generalized H-B and M-C criterion into consideration. And in combination with Golden Section Search Algorithm to calculate the Safety Factor of an open pit slope, the slide surface was also searched automatically, and the possible failure mode analysis was carried out based on the stress-strain relation. All of these works provided a basis for the following slope reinforcing design.

Key words: Strength reduction, Factor of safety, Equivalent Mohr-Coloumb criteria, Generalized Hoek-Brown criteria, Slope stability