突扩式水跃跃后水深的分析与计算

发布时间：2018-03-13 10:28

本文选题：突扩式水跃　切入点：边墙反力　出处：《长江科学院院报》2017年05期 　论文类型：期刊论文

【摘要】：突扩式消力池常见于多孔水闸和泵闸结合的水利枢纽,其水跃跃后水深的计算是一个无法回避的问题。由于突扩式水跃水流的复杂性,对其跃后水深的理论研究尚不成熟与完善。根据已有文献的试验资料,对前人常用研究方法所得的突扩式水跃跃后水深成果进行了定量分析与比较。结果表明,当边墙反力对应的压强水头等于跃前水深和跃后水深的平均值时,其计算的跃后水深与实际更加相符。通过建立绕流阻力新模型,结合已有文献的实测资料,给出了突扩式水跃绕流阻力系数的计算公式,提出了突扩式水跃跃后水深计算的新方法,并对其准确性和通用性进行了验证。
[Abstract]:The sudden expansion stilling pool is often used in the hydraulic project where the porous sluice and pump sluice are combined. The calculation of the water depth after the water jump is an unavoidable problem, because of the complexity of the sudden expansion water jump flow. The theoretical study on the water depth after the jump is not mature and perfect. According to the experimental data of the existing literature, the results of the research on the water depth after the sudden expansion of the jump are quantitatively analyzed and compared. The results show that, When the pressure head corresponding to the reaction force of the side wall is equal to the average of the water depth before the jump and the depth after the jump, the calculated water depth after the jump is more consistent with the actual situation. By establishing a new model of flow resistance around the wall, combining with the measured data of the existing literature, A formula for calculating the resistance coefficient of a sudden expansion type water jump is given, and a new method for calculating the water depth after a sudden expansion type water jump is put forward, and its accuracy and generality are verified.
【作者单位】：浙江省水利水电勘测设计院;
【分类号】：TV135.2

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