| 不透水地基上均质土坝渗流自由面的有限元计算 |
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| 引用本文： | 牛文杰,叶为民.不透水地基上均质土坝渗流自由面的有限元计算[J].岩土力学,2007,28(Z1):375-378. |
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| 作者姓名： | 牛文杰 叶为民 |
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| 作者单位： | 1. 同济大学 地下建筑与工程系，上海 200092；2. 同济大学 岩土及地下工程教育部重点实验室，上海 200092 |
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| 摘 要： | 为了保证土坝安全，水利工程中需要对土坝进行渗流计算，首先需要确定自由面。根据达西定律和渗流连续方程，以及水头和流量边界条件，建立了不透水地基上的均质土坝渗流的计算模型。利用Geoslope软件，采用有限元离散的方法计算了土坝的渗流自由面，并分析了土坝在不同的渗透系数情况下的自由面位置的差异。最后，解析解计算的自由面结果验证了有限元计算自由面方法是正确的。
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| 关 键 词： | 不透水地基上的均质堤坝 浸润面 分段法 二维有限元法 |
| 收稿时间： | 2007-03-22 |
The finite element method for the free surface of the seepage in homogeneous earth dam on imperviousness groundwork |
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| NIU Wen-jie,YE Wei-min.The finite element method for the free surface of the seepage in homogeneous earth dam on imperviousness groundwork[J].Rock and Soil Mechanics,2007,28(Z1):375-378. |
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| Authors: | NIU Wen-jie YE Wei-min |
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| Institution: | 1. Department of Geotechnical Engineering,Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China |
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| Abstract: | In order to keep the safety of the earth dam, the seepage characters of the earth dam should be analyzed in the hydraulic engineering and the free surface should be determined firstly. According to Darcy’s law, seepage constitutive equations, water head and flux boundary condition, a model is established for the seepage in the in homogeneous earth dam on imperviousness groundwork. By the Geoslope software, the free surface of the earth dam is calculated using the finite element method, and the change of the free surface is analyzed when the permeability of the earth dam is changing. At last, the numerical simulation of the free surface is verified by an analytical solution. |
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| Keywords: | homogeneous earth dam on imperviousness groundwork free surface dividing segments method two dimensional finite element method |
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