摘要
溢洪道下游出口设置了窄缝式挑坎之后,增大了其挑射水流的消能率,可明显减轻对下游河床的冲刷。在简要地分析溢洪道窄缝式挑坎体型布置的基础上,根据溢洪道窄缝式挑坎下游河床冲刷的水力模型试验资料,提出了其下游河床冲刷深度的计算式,并给出了相应的算例。本文成果可供类似工程设计和运行参考。
After the slit-type bucket is installed at the downstream outlet of the spillway, the energy dissipation rate of the jets is increased , and the erosion of the downstream riverbed can be obviously reduced. Based on the brief analysis of body layout of the slit-type bucket, and according to the hydraulic model test data of downstream riverbed scouring of slit-type bucket in spillway, the calculation formula of scour depth of downstream riverbed is put forward, and the corresponding calculation example. The results of this paper can be used for similar engineering design and operation reference.
出处
《广东水利水电》
2016年第11期1-4,共4页
Guangdong Water Resources and Hydropower
关键词
溢洪道
窄缝式挑坎
冲刷深度
模型试验
计算
spillway
slit-type bucket
depth of erosion
model test
calculation
