| 摘要: |
| 根据大朝山水电站表孔减压模型试验资料，结合原型观测有关资料，对台阶溢流坝掺气减蚀的有关问题进行了分析研究。结果表明，利用堰面带小挑坎的宽尾墩过流形式，可以解决台阶面大单宽过流掺气减蚀问题；同时也发现，由于缩尺效应问题的影响，现有减压试验方法和理论已不适应小比尺掺气水流的减蚀问题研究。 |
| 关键词: 台阶溢流坝 掺气浓度 掺气减蚀 空化 频谱 |
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| 基金项目:西北农林科技大学青年专项基金“台阶过水面大单宽过流空化破坏与保护研究” |
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| Study on the flow aeration to prevent caviation of stepped spillway for Dachaoshan Hydroelectric Station |
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| Abstract: |
| Based on the data of the spillway depression model and the prototype for Daochaoshan Hydroelectric Station,this paper analyses the problem of flow aeration to prevent cavitation on stepped spillway.The results show that large flow aeration to prevent cavitation on stepped spillway can be solved by flaring gate pier with a small deflector.In the meantime,the present theory and method are not applicable for the study of small scale spillway depression model on account of scale effect. |
| Key words: stepped spillway air concentration flow aeration to prevent cavitation cavitation spectrum |
