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研究平底渐扩式消力池深度的计算方法.分析前人对平底渐扩式消力池共轭水深和自由水跃长度的研究成果,利用动量方程推导渐扩式消力池深度的计算公式.分析认为,吴宇峰和华西列夫提出的水跃长度公式与实际比较吻合,而华西列夫公式偏于安全;侧墙反力用梯形轮廓和1/2抛物线轮廓计算水跃共轭水深与实测结果比较符合,而我国溢洪道设计规范给出的公式计算精度较差,且偏于不安全.得出了渐扩式平底消力池深度的计算方法和共轭水深计算的新公式,通过两个实际工程验证了公式的正确性.
This paper studies the calculation method of the depth of flat-sinking stilling basin.The previous research results on the conjugate depth and the length of free-wicking of flat-bottom expanding stilling pool are analyzed, and the formula of deducing the depth of the expanding- The analysis shows that the formula of hydraulic jump length proposed by Wu Yufeng and Huaxi Liefu is in good agreement with the reality while the Huaxilev formula is biased in safety. The side wall reaction force is calculated by the trapezoidal profile and 1/2 parabolic contour The measured results are in good agreement with each other, and the formula given by China’s spillway design code is poor in accuracy and unsafe.The formulas for calculating the depth of divergent flat-bottom stilling pool and the new formula for calculating the depth of conjugate water are obtained, A practical project to verify the correctness of the formula.