摘要
在边坡稳定性研究中,吸力的影响经常被忽略。基于非饱和土的渗流理论,利用数值分析方法研究了一个由于连续降雨导致的非饱和土边坡失稳的工程实例。研究结果表明:非饱和土的吸力对于维持边坡稳定具有重要影响,而吸力与降雨频率、降雨量、降雨时间、蒸发量等密切相关。对于工程实践而言,吸力的监测对于维持土坡稳定具有重要意义。
The effect of negative pore-water pressure （suction） is often ignored in slope stability studies. Based on the theory of infiltration and seepage through an unsaturated soil system,transient numerical analyses for an engineering case of slope instability caused by the loss of soil suction under the condition of continuous rainfall were conducted. The results of the analysis showed that the unsaturated soil suction has an important effect on the stability of unsaturated soil slope. The suction profile depends on the magnitude of the flux, frequency, duration of rainfall and evapotranspiration. For engineering practice,monitor of the soil suction is of great importance in maintaining slope stability.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2007年第3期55-58,共4页
Hydrogeology & Engineering Geology
基金
天津大学青年教师基金资助项目(20060157)
关键词
环境条件
非饱和土
吸力
边坡稳定
environmental conditions
unsaturated soil
suction
slope stability
