The Comparative Analysis of Two-Dimensional and Three-Dimensional Limit Equilibrium for Dike Security and Stability

From The shape of the project landslide,It is more three-dimensional features. So three-dimensional slope stability analysis method may be more accurate. Currently, slope stability analysis has been developed from two-dimensional to three- dimensional and achieved positive results. However, It has few studies on the gap between the two calculation results. It also prevent the application of three-dimensional calculation results. Because specification security and stability limits is based on the premise of two-dimensional calculation. This paper uses the analysis of embankment reinforcement in Qin Huai River as research subject. And two analysis methods were used for comparison and analysis. The result shows that for security and stability factor, the calculation value of two- dimensional is slightly lower than the three- dimensional , about 10~20%.