堤防软土边坡稳定性分析  

Slope Stability Analysis of Embankment Soft Soil

作　　者：张莉萍 李进 陈勇 王艳波 

机构地区：[1]南京市水利规划设计股份有限公司,江苏南京210022

出　　处：《资源环境与工程》2017年第4期460-462,485,共4页Resources Environment & Engineering

摘　　要：堤防堤基分布的软土是堤防边坡稳定的关键性控制因素,软土具有高含水率、大孔隙比、高压缩性、低强度、低渗透性、高灵敏度、流变性的特点,使得软土边坡的破坏形式也区别于一般粘性土边坡。从工程实例出发,通过软土流变试验研究软土的长期强度衰减特征,并将试验结果引入工程实际计算中,提出堤防工程软土边坡稳定计算过程中强度参数应采用长期强度指标作为边坡稳定计算参数。该研究成果对堤基下分布软土的堤防边坡的稳定分析具有一定的理论指导意义。The soft soil distributed in the embankment foundation is key control factors of embankment slope stability, it has the characteristics of high moisture content,large void ratio,high compressibility, low strength, low permeability,high sensitivity and rheological. Therefore, the failure forms of soft soil slopes are different from those of general cohesive soil slopes. This paper is based on engineering example, long-term strength attenuation characteristics of soft soil are studied by rheological test of soft soil. And the experimental results are introduced into the practical engineering calculation. As a result, long-term strength index should be used as a parameter of slope stability calculation in stability calculation of soft soil slope in embankment project. The results of this study has a certain theoretical guidance significance to the analysis of soft soil distributed in the embankment foundation.

关 键 词：堤防边坡 软土流变 强度衰减 变形特性 

分 类 号：TV871[水利工程—水利水电工程]