摘要
本文分析了影响池式戽冲刷坑形态的各项因素,应用防冲比,得到了冲刷坑的无因次函数式。然后,采用反演冲刷结果的方法,对试验与原型观测资料进行分析整理,获得了池式戽防冲与选型的计算式,并提出了以控制冲刷坑深度为条件的戽型优化设计方法。文中对冲刷坑水深计算式采用正交分析计算表明,戽内水平长度与河床抗冲能力是控制冲刷坑水深的主要因素,在应用时需过细论证,才可获得满意的防冲效果。
The new concept of anti-erosion ratio and the permissible erosion depth are used in this paper. A computation method for local scour hole behind bucket and optimization of configuration is presented. The orthogonal analyses show that level length in bucket and the anti-erosion power of river bed are important factors for controlling scour hole depth.
