| 灌渠闭闸期闸前段流场特征及泥沙淤积速率分析 |
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| 引用本文： | 张芳芳,张耀哲,粟晓玲.灌渠闭闸期闸前段流场特征及泥沙淤积速率分析[J].农业工程学报,2016,32(2):111-118. |
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| 作者姓名： | 张芳芳 张耀哲 粟晓玲 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院,杨凌,712100 |
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| 基金项目： | 水利部公益性行业专项经费项目（201301016-01） |
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| 摘 要： | 为研究灌渠闭闸期闸前段流场特征及泥沙淤积速率,基于南亚某河流待建引水明渠建立水流数学模型,并借助Flow-3D软件对高水位、中水位和低水位3种特征工况下,闭闸期闸前段流场进行模拟分析。依据盲肠水流泥沙运动的研究思路,提出闭闸期闸前明渠段泥沙淤积速率的估算方法,并结合同期明渠段悬移质泥沙模型试验资料,率定得出闸前段泥沙淤积速率求解公式。结果表明,闭闸期闸前段出现围绕竖轴近似呈椭圆型的回流现象,平面流速呈交替增减、水位呈中心低周界高的水力特征;泥沙淤积速率较大,灌渠将呈现累积性淤积特征。最终得出,闭闸期闸前明渠段与港池内盲肠水流运动相类似,闸前渠段淤积严重,引水明渠的口门初步设计方案有待充分论证的结论。
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| 关 键 词： | 灌渠 流场 泥沙 灌溉渠系 闸前段 泥沙淤积 |
| 收稿时间： | 2015/7/24 0:00:00 |
| 修稿时间： | 2015/11/1 0:00:00 |
Analysis of flow field characteristics and sediment deposition rate in irrigation canal in front of sluice during gate closing |
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| Zhang Fangfang,Zhang Yaozhe and Su Xiaoling.Analysis of flow field characteristics and sediment deposition rate in irrigation canal in front of sluice during gate closing[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(2):111-118. |
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| Authors: | Zhang Fangfang Zhang Yaozhe and Su Xiaoling |
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| Institution: | College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China,College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China and College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China |
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| Abstract: | |
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| Keywords: | canals flow fields sediment irrigation canal canal before sluice sediment deposition |
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