黄河下游堤防稳定性分析方法适应性研究

Study on Adaptability of Slope Stability Analysis of Embankments on the Lower Yellow River

简介了几种常用的土质边坡稳定性分析方法,如利用极限平衡理论的各种方法及有限元法。利用这些方法,对黄河下游某段堤防采用极限平衡法和有限元法进行了稳定性分析,结果表明:极限平衡分析各方法计算得到的滑坡稳定系数大致相同,安全系数差别不大;有限元法可以更客观地反映坡体的应力场,并能揭示坡体的变形特性。在实际工程中,应根据边坡工程的具体特点及使用目的,尽量利用多种分析方法进行综合分析、验证,力求得出一个客观、可靠、合理的评价结果。

The paper briefly introduces some methods of soil slope stability analysis most in use, such as various methods by utilizing ultimate equilibrium theory and method of finite element. The paper also conducts stability analysis on embankment at a certain section of the lower Yellow River by utilizing these methods. The results show that the stability factors of landslide calculated by methods of ultimate equilibrium analysis more or less the same, the difference of safety factors is small and the method of finite element can more objectively reflect the stress fields of the slope and promulgate the characteristics of slope deformation. In the actual project, it should try to use various kinds of methods to analyze and verify for having a reliable and reasonable result based on the specific feature and purpose of slopes.