| 砂砾土各级颗粒的管涌临界坡降研究 |
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| 引用本文： | 毛昶熙,段祥宝,吴良骥.砂砾土各级颗粒的管涌临界坡降研究[J].岩土力学,2009,30(12):3705-3709. |
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| 作者姓名： | 毛昶熙 段祥宝 吴良骥 |
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| 作者单位： | 南京水利科学研究院水工研究所，南京 210029 |
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| 摘 要： | 基于渗透力概念在管涌问题研究中的具体应用，按照渗透力与土颗粒浮重间的极限平衡推导出能计算管涌土的砂砾土料各级大小土颗粒的管涌临界坡降公式，并经过国内外大量管涌试验资料的验证是合理可信的。
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| 关 键 词： | 渗透力 管涌 各级颗粒 临界坡降 砂砾土 管涌土 颗分曲线 |
| 收稿时间： | 2009-06-08 |
Study of critical gradient of piping for various grain sizes in sandy gravels |
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| MAO Chang-xi,DUAN Xiang-bao,WU Liang-ji.Study of critical gradient of piping for various grain sizes in sandy gravels[J].Rock and Soil Mechanics,2009,30(12):3705-3709. |
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| Authors: | MAO Chang-xi DUAN Xiang-bao WU Liang-ji |
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| Institution: | Nanjing Hydraulic Research Institute, Nanjing 210029, China |
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| Abstract: | The practical application of seepage force concept to the piping problem research is described. According to the limit equilibrium between seepage force and buoyant weight of soil grains, the formulas to compute piping critical gradient for various grain sizes in sandy gravels of piping soil are derived. And then they are verified by many data of piping experiments; it is shown that these formulas are reasonable and responsible. |
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| Keywords: | seepage force piping various grain sizes critical gradient sandy gravels piping soil grain size distribution curve |
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