| 大比降河道均匀沙起动流速研究 |
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| 引用本文： | 侯极.大比降河道均匀沙起动流速研究[J].四川大学学报(工程科学版),2013,45(Z2):32-35. |
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| 作者姓名： | 侯极 |
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| 作者单位： | 四川大学水力学与山区河流开发保护国家重点实验室 |
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| 基金项目： | 973 计划资助(2011CB409903) 国家自然科学基金资助项目(51279116) |
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| 摘 要： | 在讨论床面均匀沙颗粒起动标准的基础上，引入休止角的表达式和随机性理论推导出不同底坡下均匀沙起动概率，进而导出泥沙起动流速；通过已有的研究成果验证本公式的合理性，结果表明：本文公式适用于大比降河道，而且对普通河道的适用性也较强；同时文章初步分析了典型无粘性均匀沙起动公式差异性的原因。
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| 关 键 词： | 大比降 均匀沙 起动概率 起动流速 |
| 收稿时间： | 2012/12/18 0:00:00 |
| 修稿时间： | 2013/2/15 0:00:00 |
The Study on Incipient Velocity of Steep Channels |
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| Hou Ji.The Study on Incipient Velocity of Steep Channels[J].Journal of Sichuan University (Engineering Science Edition),2013,45(Z2):32-35. |
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| Authors: | Hou Ji |
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| Abstract: | Based on the standard of incipient motion of uniform sediment, the incipient probability was deduced by the concept of sediment angle of repose and the random theory,we can alse obtain the incipient velocity of uniform on different bed slopes. Through the comparison with the former research, the result shows that this formula can be not only used in large gradient channels,but also used in the common chnnels.At the same time,this study peliminary analysis the difference of the typical incipient formulas of uniform sediment. |
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| Keywords: | large gradient uniform sediment incipient probalility incipient velocity |
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