| 引黄灌渠复式断面输水输沙特性研究 |
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| 引用本文： | 周宗军,王延贵. 引黄灌渠复式断面输水输沙特性研究[J]. 泥沙研究, 2008, 0(5) |
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| 作者姓名： | 周宗军 王延贵 |
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| 作者单位： | 国际泥沙研究培训中心,北京,100044 |
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| 基金项目： | 科技部科研院所社会公益研究专向项目 ， 国家自然科学基金项目 |
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| 摘 要： | 探讨了复式断面渠道的输水输沙特性,比较了梯形断面与复式断面的输水输沙能力,典型算例计算结果表明复式断面形态具有小水过小断面、大水过大断面的特点:小流量引水时复式断面水流归槽,提高了水流挟沙力,能够减轻渠道泥沙淤积;同时也能够满足大流量的要求。结合黄河下游灌区实际情况,对于长期引水流量达不到设计流量的灌区,考虑采用复式断面。
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| 关 键 词： | 引黄灌渠 复式断面 输水输沙 |
Study on the characteristics of flow and sediment transport in compound canal of the irrigation district in the lower Yellow River |
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| ZHOU Zong-jun,WANG Yan-gui. Study on the characteristics of flow and sediment transport in compound canal of the irrigation district in the lower Yellow River[J]. Journal of Sediment Research, 2008, 0(5) |
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| Authors: | ZHOU Zong-jun WANG Yan-gui |
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| Abstract: | The characteristics of water and sediment transporting in a compound canal is discussed and there is also a comparison of sediment transport capacity between trapezoid canal and compound canal.The calculated result of a typical example demonstrates that the compound canal has such characteristics that low discharge flows a small cross section and high discharge flows a large cross section.Compound canal can be applied to the trapezoid canal in the irrigation district of lower Yellow River when the intake discharge is smaller. |
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| Keywords: | irrigation canal compound cross section water and sediment transporting |
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