| 二维无压稳定渗流分析的改进方法 |
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| 引用本文： | 谢国海,章广成.二维无压稳定渗流分析的改进方法[J].地球与环境,2005,33(Z1):52-56. |
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| 作者姓名： | 谢国海 章广成 |
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| 作者单位： | 中国地质大学工程学院,湖北,武汉,430074 |
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| 摘 要： | 人类发展演变过程中,经历了各种各样的地质作用所造成的灾害,其中大部分地质灾害的形成都有地下水的参与,因而确定地质体稳定性时不能忽略地下水。无压渗流是比较复杂的非线性问题,难点在于如何求自由面, 尤其是对溢出点的求解一直没有很好的解决。本文提出了求解无压渗流自由面的一种新方法,在采用等效渗透系数法搜索到自由面后,通过反复移动溢出点再次搜索自由面,最终达到准确求解自由面的目的。实例证明该方法是简单准确有效的。本方法对解决工程问题具有一定的实际意义。
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| 关 键 词： | 无压稳定渗流 等效渗透系数 整体渗透矩阵 自由面 溢出点 有限元 |
| 文章编号： | 1672-9250(2005)增-0052-05 |
| 修稿时间： | 2005年5月17日 |
THE MODIFIED METHOD FOR 2D UNCONFINED SEEPAGE ANALYSIS |
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| XIE Guo-hai,ZHANG Guang-cheng.THE MODIFIED METHOD FOR 2D UNCONFINED SEEPAGE ANALYSIS[J].Earth and Environment,2005,33(Z1):52-56. |
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| Authors: | XIE Guo-hai ZHANG Guang-cheng |
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| Institution: | XIE Guo-hai,ZHANG Guang-cheng China University of Geosciences,Wuhan,430074 |
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| Abstract: | During the history of human development, we have suffered so many kinds of hazard caused by geological process, and most of hazards have something to do with the interaction of the underground water, so it needs to know water table when we calculate the stability of the geology. Unconfined seepage is a complicated nonlinear problem, which is difficult of solving free surface; especially spill point always is not solved statistically. Aim at the problem, after searching free surface by equivalent permeability coefficient, we search it again through move the spill point again and again until solve free surface. The fact proves the method is simple, accurate and valid. The method has some practical meaning to some engineering. |
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| Keywords: | unconfined seepage equivalent permeability coefficient integer permeability matrix free surface spill point finite element method |
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