| 深尾水消力池非完全宽尾墩消能试验研究 |
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| 引用本文： | 周招,王均星,梁砚,张文传.深尾水消力池非完全宽尾墩消能试验研究[J].水科学进展,2017,28(5):729-737. |
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| 作者姓名： | 周招 王均星 梁砚 张文传 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室, 湖北 武汉 430072 |
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| 基金项目： | 国家自然科学基金资助项目（51479145） |
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| 摘 要： | 为解决下游深尾水工程中常规底流式消力池内由于消能紊动不足引起出池水流二次水跃、冲刷下游天然河床等一系列工程难题，结合物理模型和数值模拟对比研究平尾墩、常规宽尾墩以及非完全宽尾墩下游消力池内流场差异。研究结果表明:非完全宽尾墩利用平尾墩闸室与相邻宽尾墩闸室入池水流横向水位落差和纵向流速梯度，迫使雍高射流入池水流呈弧形横向扩散、碰撞，显著增强剪切紊动，促使消力池上游区域形成由底至表不断发展壮大的立轴旋滚，提升消力池内能量紊动耗散、降低出池水流流速，完全解决常规底流式消力池中易出现的二次水跃、消能不充分等问题。
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| 关 键 词： | 宽尾墩 横向扩散 二次水跃 立轴旋滚 深尾水消力池 |
| 收稿时间： | 2017-04-12 |
Study on incompletely flaring gate pier energy dissipation in deep tail water stilling basin |
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| ZHOU Zhao,WANG Junxing,LIANG Yan,ZHANG Wenchuan.Study on incompletely flaring gate pier energy dissipation in deep tail water stilling basin[J].Advances in Water Science,2017,28(5):729-737. |
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| Authors: | ZHOU Zhao WANG Junxing LIANG Yan ZHANG Wenchuan |
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| Institution: | State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430072, China |
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| Abstract: | In order to solve the engineering problems of secondary hydraulic jump and downstream river bed erosion due to insufficient energy dissipation in deep tailwater stilling basin, this paper compares the stilling basin flow fields of flat gate pier, conventional flaring gate pier and incomplete flaring gate pier based on the physical and numerical models. Results show that through increasing velocity gradient and lateral water level gap between adjacent chambers, the incomplete flaring gate pier can promote the lateral diffusion and collision of water jets to form growing vertical vortex from bottom to surface in the upper regions of stilling basin. This would significantly intensify energy dissipation to reduce the outgoing velocity, and completely solve the common hydraulic problems in deep tailwater stilling basin. |
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| Keywords: | flaring gate pier lateral diffusion secondary hydraulic jump vertical axis deep tailwater stilling basin |
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