心墙坝坝坡稳定性对于邓肯E-B模型参数的敏感性研究  

Sensitivity Analysis of E-B Model Parameters Effecting on Dam Slope Stability in Core Dam

作　　者：海燕[1] 王瑞骏[2] 朱岳明[1] 

机构地区：[1]河海大学水利水电学院,南京210098 [2]西安理工大学水利水电学院,西安710048

出　　处：《三峡大学学报（自然科学版）》2008年第3期13-17,共5页Journal of China Three Gorges University：Natural Sciences

摘　　要：针对目前包括心墙坝在内的土石坝坝坡稳定敏感性研究存在的不足,从稳定和变形密切相关的角度出发,将对坝体变形较为敏感的模型参数考虑到稳定分析当中去,提出了一种新的研究思路.同时结合心墙坝工程实例,研究其上、下游坝壳及心墙土石料E-B模型参数对于坝体应力应变及坝坡稳定的敏感性.结果表明,不同部位、不同的模型参数对于坝体应力应变与坝坡稳定的敏感程度是不同的,对坝体应力应变较为敏感的模型参数对坝坡稳定同样具有较显著的敏感性.A new research method for sensitivity analysis is presented from the view of closed relationship between stability and deformation, which takes the E-B model parameters effecting on dam deformation into analysis of dam slope stability, to solve some problems existed in the sensitivity analysis of dam slope stability for embankment dam including core dam. Meanwhile, to combine an actual core dam, the research about E-B model parameters sensitivity of upper and lower dam shell and core wall to stress and strain and dam slope stability is carried out. The results show that it has different sensitivity degree for different model parameters and different locations of them; that it is sensitive for the model parameters having great sensitivity to the stress and strain, to dam slope stability.

关 键 词：稳定 变形 心墙坝 有限元法 E—B模型参数 敏感性 

分 类 号：TV641[水利工程—水利水电工程]