| 连续降雨作用下非饱和土边坡的稳定性分析 |
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| 引用本文： | 崔溦,杨建,刘丽.连续降雨作用下非饱和土边坡的稳定性分析[J].水文地质工程地质,2007,34(3):55-58. |
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| 作者姓名： | 崔溦 杨建 刘丽 |
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| 作者单位： | 1. 天津大学建工学院,天津,300072
2. 北京城建十建设工程有限公司,北京,100029 |
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| 基金项目： | 天津大学校科研和教改项目 |
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| 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。
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| 关 键 词： | 环境条件 非饱和土 吸力 边坡稳定 |
| 文章编号： | 1000-3665（2007）03-0055-04 |
| 收稿时间： | 2006-07-27 |
| 修稿时间： | 2006-09-04 |
Analysis of continuous rainfall conditions on stability of unsaturated soil slope |
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| CUI Wei,YANG Jian,LIU Li.Analysis of continuous rainfall conditions on stability of unsaturated soil slope[J].Hydrogeology and Engineering Geology,2007,34(3):55-58. |
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| Authors: | CUI Wei YANG Jian LIU Li |
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| Institution: | 1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; Beijing Urban Construction Engineering Tenth CO. LTD, Beijing 100029, China |
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| Abstract: | 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. |
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| Keywords: | environmental conditions unsaturated soil suction slope stability |
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