Seepage field finite element simulation of faced rockfill dam under cases of vertical joints and seal failure

PAN Shao-hua; MAO Xin-ying; BAI Zheng-xiong

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Seepage field finite element simulation of faced rockfill dam under cases of vertical joints and seal failure

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- Seepage field finite element simulation of faced rockfill dam under cases of vertical joints and seal failure
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  武汉大学水利水电学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV223
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
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PAN Shao-hua, MAO Xin-ying, BAI Zheng-xiong. Seepage field finite element simulation of faced rockfill dam under cases of vertical joints and seal failure[J]. 2008, 29(S1).
DOI：

PAN Shao-hua, MAO Xin-ying, BAI Zheng-xiong. Seepage field finite element simulation of faced rockfill dam under cases of vertical joints and seal failure[J]. 2008, 29(S1). DOI：

摘要

以金川面板堆石坝为例，用有限元方法计算了当面板缝及止水局部失效时各种工况下的渗流场，系统分析了大坝在面板垂直缝及止水局部失效后的稳定渗流场的规律和特点。采用无厚度的二维平面单元来模拟面板垂直缝及止水结构周边缝，同时采用理论上严密的Signorini型变分不等式方法进行求解，此方法能对渗流出渗点和浸润线进行准确定位。通过分析计算结果，指出了面板缝及止水结构周边缝的失效位置，失效缝宽对等势线、浸润线以及渗漏量的影响。为面板堆石坝接缝的设计提供参考。

Abstract

The seepage fields and stability of concrete face rockfill dam(CFRD) in Jinchuan Hydropower Station are calculated by FEM

when vertical joints and seal failure x occurred in the face plate. Two-dimensional plane element without thickness simulating the vertical joints and the sealing peripheral fractures is adopted; meanwhile

Signorini’s variational inequality is adopted to solve the problem. This method can locate the frozen points and the saturation line accurately. The results show that the saturation line and equipotential line are affected by the position and the width of the vertical joints and the sealing peripheral joints. Some references will be given for designing the joints of CFRD.

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