| 摘要: |
| 在总结国内外加糙消力池水力特性研究的基础上，给出密排加糙消力池的共轭水深和水跃长度的计算方法.根据W-S-Hughes等对密排加糙消力池共轭水深和水跃长度的试验资料，利用量纲和谐原理研究密排加糙消力池的水跃方程和水跃长度随弗劳德数、跃前断面水深、跃后断面水深和壁面粗糙度的变化规律.结果表明：密排加糙消力池的共轭水深随着跃前断面弗劳德数的增大而增大，随着壁面粗糙度的增大而减小；水跃长度也是跃前和跃后断面水深、跃前断面弗劳德数和壁面粗糙度的函数；水跃区的消能率随着壁面粗糙度的增加而增加.提出了密排加糙消力池共轭水深和水跃长度的计算式，并用其他学者已有试验资料验证了计算式的可靠性. |
| 关键词: 密排加糙消力池 共轭水深 水跃长度 |
| DOI： |
| 分类号:TV135.2+1 |
| 基金项目: |
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| Test analysis of conjugate depth and hydraulic jump length of roughened stilling basin |
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ZHANG Zhi-chang, FU Ming-huan, LI Ruo-bing, ZHAO Ying
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Xi′an University of Technology
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| Abstract: |
| Calculation methods of conjugate depth and hydraulic jump length of the roughened stilling basin with uniform gravel bed are proposed in this study. According to the test data given by Hughes on the conjugate depth and hydraulic jump length of the roughened stilling basin with the gravel bed， hydraulic jump equation and the change law of hudraulic jump length with the upstream Froude number， upstream supercritical flow depth， downstream subcritical flow depth and roughness height are analized through the dimension concordant principle. The conjugate depth is increasing with the increasing in Froude number and decreasing with increasing in the roughness height. The hydraulic jump length is also the function of the upstream Froude number， upstream supercritical flow depth， downstream subcritical flow depth and roughness height. Meanwhile， energy dissipation ratio in the hydraulic jump region is increasing with increasing in the roughness height. Calculation formulas of the conjugate depth and the hydraulic jump length of the roughened stilling basin with uniform gravel bed, verified by the test results of FGCarollo, are put forward. |
| Key words: roughened stilling basin with uniform gravel bed conjugate depth hydraulic jump length |
