| 降雨入渗对土坡稳定性影响分析 |
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| 引用本文： | 刘小文,耿小牧. 降雨入渗对土坡稳定性影响分析[J]. 水文地质工程地质, 2006, 33(6): 40-42,47 |
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| 作者姓名： | 刘小文 耿小牧 |
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| 作者单位： | 南昌大学建筑工程学院,南昌,330029 |
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| 基金项目： | 科技部社会公益研究项目 |
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| 摘 要： | 在饱和-非饱和渗流理论基础上,从降雨强度、前期降雨总量、不同的土坡坡度以及是否考虑植被护坡等方面对大气降雨条件下土坡的稳定性进行了探讨.分析结果表明,在土体饱和渗透系数一定的条件下,强降雨对土坡稳定系数影响显著;土坡越陡,降雨强度大小对土坡安全性影响就俞显突出;土坡表层植物根系的存在影响非饱和区渗流场分布,可以延缓非饱和区含水量的增大,土坡稳定系数得到提高.
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| 关 键 词： | 降雨 入渗 非饱和土渗流 土坡 |
| 文章编号： | 1000-3665（2006）06-0040-03 |
| 收稿时间： | 2006-03-24 |
| 修稿时间： | 2006-03-242006-05-08 |
Stability analysis of soil slope under rainfall seepage influence |
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| LIU Xiao-wen,GENG Xiao-mu. Stability analysis of soil slope under rainfall seepage influence[J]. Hydrogeology and Engineering Geology, 2006, 33(6): 40-42,47 |
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| Authors: | LIU Xiao-wen GENG Xiao-mu |
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| Affiliation: | School of Architecture Engineering, Nanehang University, Nanehang 330029, China |
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| Abstract: | Slope stability is analyzed according to rainfall intensities,prophase total rainfall,different soil slope gradients and vegetation by saturated-unsaturated seepage theory.Study shows that great rainfall influences soil slope safety factor markedly,magnitude of rainfall intensity has a great influence on slope safety factor for steep slope under certain coefficient of saturated conductivity,the surface plant roots affect unsaturated zone seepage field distribution and postpone unsaturated zone moisture content's increase,so the soil slope safety factor is enhanced finally. |
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| Keywords: | rainfall seepage unsaturated seepage soil slope |
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