| 河床下切深度对二元堤基渗透变形的影响 |
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| 引用本文： | 刘光磊,王保田,李守德.河床下切深度对二元堤基渗透变形的影响[J].河海大学学报(自然科学版),2010,38(4):378-381. |
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| 作者姓名： | 刘光磊 王保田 李守德 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,江苏,南京,210098;河海大学岩土工程科学研究所,江苏,南京,210098 |
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| 摘 要： | 通过室内砂槽试验模拟二元堤基不同河床下切深度条件下渗透变形的发生和发展过程,测得了不同河床下切深度条件下研究区域内的临界水头、破坏水头、渗流量和渗透变形.试验结果表明:随着河床下切深度的增加,渗流场会呈规律性变化,临界水头和破坏水头均有所降低,渗流量有所增加,但降低和增加幅度均会逐渐减小;当河床下切到一定深度后,河床下切对二元堤基渗透变形的影响将趋于稳定.
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| 关 键 词： | 河床下切 二元堤基 渗透变形 临界水力梯度 模型试验 |
| 修稿时间： | 2010/9/3 0:00:00 |
Influences of different depths of riverbed entrenchment on seepage deformation of two-layer foundation of levees |
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| LIU Guang-lei,WANG Bao-tian,LI Shou-de.Influences of different depths of riverbed entrenchment on seepage deformation of two-layer foundation of levees[J].Journal of Hohai University (Natural Sciences ),2010,38(4):378-381. |
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| Authors: | LIU Guang-lei WANG Bao-tian LI Shou-de |
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| Institution: | LIU Guang-lei1,2,WANG Bao-tian1,LI Shou-de1,2(1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China,2. Geotechnical Research Institute,China) |
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| Abstract: | The laboratory flume model tests were carried out to simulate the generation and development of seepage deformation in two-layer foundation of levees with different depths of riverbed entrenchment. The critical head,failure head,seepage discharge and seepage deformation in the study under different depths of riverbed entrenchment were obtained. The test results indicate that with the increasing depths of the riverbed entrenchment,the seepage field regularly changes,the critical head and failure head both ha... |
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| Keywords: | riverbed entrenchment two-layer foundation of levees seepage deformation critical hydraulic gradient model test |
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