| 悬挂式防渗墙控制管涌发展的试验研究 |
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| 引用本文： | 毛昶熙,段祥宝,蔡金傍,茹建辉.悬挂式防渗墙控制管涌发展的试验研究[J].水利学报,2005,36(1):0042-0050. |
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| 作者姓名： | 毛昶熙 段祥宝 蔡金傍 茹建辉 |
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| 作者单位： | 1. 南京水利科学研究院水工水力学研究所,江苏南京,210029
2. 广东省水利厅,广东广州,510150 |
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| 摘 要： | 在试验室水槽中进行了有悬挂式防渗墙的砂质堤基的渗流模型管涌试验，取得了不同贯入度悬挂防渗墙防止管涌效果的系列试验成果，论证了悬挂式防渗墙对覆盖土层下粉细砂地基发生管涌时有截断通道、控制管涌发展的显著功效。根据试验资料确定了悬挂式防渗墙及其前后水平段的渗流临界坡降，给出了管涌险情是否会影响大堤安全的估算公式。
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| 关 键 词： | 堤防 管涌 悬挂式墙 砂模型试验 临界坡降 |
| 文章编号： | 0559-9350(2005)01-0042-09 |
| 修稿时间： | 2003年9月5日 |
Experimental study on piping development control by means of suspended cut-off wall |
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| MAO Chang-xi,DUAN Xiang-bao,CAI Jin-bang,RU Jian-hui.Experimental study on piping development control by means of suspended cut-off wall[J].Journal of Hydraulic Engineering,2005,36(1):0042-0050. |
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| Authors: | MAO Chang-xi DUAN Xiang-bao CAI Jin-bang RU Jian-hui |
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| Institution: | 1.Nanjing Hydraulic Research Institute, Nanjing 210029, China; 2.Water Resources Bureau of Guangdong Province, guangzhou 510150, China |
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| Abstract: | The model test on effect of suspended cut-off wall on controlling the piping in sandy foundation of levee was carried out in a flume. The experimental results for different suspension depths were obtained. It is found that the cut-off wall can effectively block the piping passage in silt-sandy layer and control the development of piping. The critical seepage gradients of the cut-off walls are obtained according to the experimental data. The formula for assessing the influence of piping on safety of levee is proposed. |
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| Keywords: | levee piping suspended cut-off wall model test critical seepage gradient |
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