| 摘要: |
| 某水电站河床狭窄，来流含沙量较大，选择冲沙效果好、布置合理的排沙建筑物非常重要。首先结合枢纽建筑物和整体水工模型试验冲沙效果，优选在进水口下方布置排沙廊道和左侧布置冲沙底孔相结合的排沙建筑物，然后采用水力学数值计算确定廊道过流断面和岔管型式、采用大比尺水工模型试验选择水力学条件较好正方形交叉断面的岔管、掺气效果较好的差动式掺气坎，并调整廊道底坡。该研究成果可供类似工程参考。 |
| 关键词: 冲沙建筑物、排沙廊道、冲沙底孔、掺气坎、差动式 |
| DOI： |
| 分类号:TV74 |
| 基金项目: |
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| Design of a sediment discharge gallery for a hydropower station |
|
Yangrong, Shenming
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Huadong Engineering Corporation Limited of PowerChina
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| Abstract: |
| The riverbed of a hydropower station is narrow, and the sediment concentration of the incoming flow is large.It is very important to choose a sediment discharge building with good sand discharge effect and reasonable layout. First of all, with the layout of the project and the overall hydraulic model test of the sand discharge effect, the sediment discharge gallery under the inlet and the sediment discharge bottom outlet on the left are optimized. Then, The hydraulic flow calculation is used to determine the flow cross-section and bifurcated pipe type of the gallery, and the large scale hydraulic model test is used to select the bifurcated pipe and aeration effect of the square cross-section with better hydraulic conditions Better differential aerator and adjust the bottom slope of gallery. The research results can be used as reference for similar projects. |
| Key words: sediment discharge building, sediment discharge gallery,sediment discharge bottom outlet, aerator, differential type |
