基于二维有限元堤坝边坡稳定性模拟分析

Stability Simulation Analysis of Embankment Slope Based on Two-Dimensional Finite Element Method

堤坝边坡的稳定性是保障堤坝安全运行的重要因素之一。堤坝边坡的不稳定可能导致堤坝破坏,从而引发严重灾害,造成人员伤亡和财产损失。因此,保证堤坝边坡的稳定性对于保障人民生命财产安全和维护社会稳定具有重要意义。采用有限元COMSOL对堤坝进行建模,建立大坝边坡受各种载荷的二维有限元分析模型,从而进行研究分析,安全系数(FOS)以及重力和静水压力的影响也是预测堤坝边坡稳定性的必要参数。模拟后给出堤坝中的压力水头、失稳前的等效塑性应变和堤坝失稳前的位移大小以及最大位移与FOS的关系示意图。为了控制地表沉降、变形和滑移等几个重要的影响因素提供了重要的参考依据,对堤坝边坡稳定性的研究开展具有重要意义。

The stability of the embankment slope is one of the important factors to ensure the safe operation of the embankment. The instability of the embankment slope may lead to the failure of the embankment, which will lead to serious disasters, resulting in casualties and property losses. Therefore, it is of great significance to ensure the stability of the embankment slope for the safety of people’s life and property and the maintenance of social stability. The finite element COMSOL is used to model the dam slope, and the two-dimensional finite element analysis model of the dam slope subjected to various loads is established for research and analysis. The safety factor (FOS), the influence of gravity and hydrostatic pressure are also necessary parameters to predict the stability of the dam slope. After the analysis, the pressure head, the equivalent plastic strain before the instability, the displacement before the instability of the dam and the relationship between FOS and the maximum displacement are given. In order to control the surface subsidence, deformation and slip of several important factors to provide an important reference basis for the study of embankment slope stability has great significance.