| 黄河下游堤防非饱和土边坡渗流分析 |
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| 引用本文： | 刘海宁,王俊梅,王思敬,刘汉东,胡波.黄河下游堤防非饱和土边坡渗流分析[J].岩土力学,2006,27(10):1835-1840. |
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| 作者姓名： | 刘海宁 王俊梅 王思敬 刘汉东 胡波 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所 工程地质力学重点实验室，北京 100029；2. 华北水利水电学院 岩土工程系，郑州 450008 |
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| 基金项目： | 河南省高校杰出科研创新人才工程项目 |
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| 摘 要： | 根据室内非饱和土的渗透试验得出的非饱和土的渗透参数，针对黄河下游堤防典型的非饱和土边坡，采用有限单元法系统地分析了堤防非饱和土边坡在降雨和洪水作用下的非饱和渗流场特征，并得出降雨与洪水对非饱和粉质黏土边坡渗流场的改变范围，该范围的大小为浸润线移动前方2 m之内。进一步分析了降雨与洪水共同作用对黄河下游堤防边坡非饱和渗流场的影响，分析结果表明降雨程度的大小和持续时间的长短直接影响着洪水对非饱和渗流场改变的难易程度。
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| 关 键 词： | 非饱和土 边坡 非饱和渗透性 有限单元法 |
| 文章编号： | 1000-7598-（2006）10-1835-06 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-08-03 |
Seepage analysis of unsaturated soil levee slopes in lower reaches of Yellow River |
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| LIU Hai-ning,WANG Jun-mei,WANG Si-jing,LIU Han-dong,HU Bo.Seepage analysis of unsaturated soil levee slopes in lower reaches of Yellow River[J].Rock and Soil Mechanics,2006,27(10):1835-1840. |
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| Authors: | LIU Hai-ning WANG Jun-mei WANG Si-jing LIU Han-dong HU Bo |
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| Institution: | 1. Key Laboratory of Engineering Geomechanics; Institute of Geology and Geophysics; Chinese Academy of Sciences, Beijing 100029, China; 2. Department of Geotechnical Engineering, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450008, China |
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| Abstract: | The permeability coefficient of the unsaturated soil can be got from the seepage test with the triaxial test instrument for unsaturated soils controlled by stress and strain in the laboratory. Based on this, under the environment of rain and flood we analyze the variability of the seepage field of unsaturated levee slopes in the lower reaches of Yellow River with the finite element method. From this we get the extent influenced by rain or flood infiltration in front of the saturation curve. The extent is about 2 meters. We analyze the co-operated influence of rain and flood infiltration and get that whether the flood infiltration can easily change the seepage field or not is determined by the rainfall intensity and rainfall duration. |
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| Keywords: | unsaturated soil slope permeability of unsaturated soil finite element method |
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