以某边坡加固工程为例，应用基于强度折减法的三维有限元，对该边坡天然状态下的稳定性进行了分析，确定了边坡危险区域及最危险滑动面，据此提出了贴坡和抗滑桩两种加固方案，并对两种加固方案下的边坡稳定性进行了分析。研究表明，基于强度折减法的三维有限元对存在软弱夹层、地质条件复杂的三维边坡进行稳定性分析是可靠的；在选择边坡加固方案时，进行三维有限元数值模拟是十分必要的。

The 3D finite element method based on strength reduction method was used to analyze the slope stability of a slope reinforcement project under natural conditions. The dangerous zone and most dangerous sliding surface of the slope were determined. On the basis, two reinforcement schemes were proposed, including the fitting-slope reinforcement and anti-slide pile reinforcement. The slope stability was analyzed under the two reinforcement schemes. The results showed that the 3D finite element method based on strength reduction method can provide reliable analysis of slope stability for the three-dimensional slopes with weak interlining and complex geological conditions. The three-dimensional finite element numerical simulation is necessary in the selection of slope reinforcement scheme.