论文部分内容阅读
一、概述对于来流佛汝德数低于4.5的水跃型消力池,由于其形成的水跃弱且不稳定,因此,设计短而有效的消力池就比较困难。美国垦务局1957年推荐了带有陡槽消力墩(趾墩)和倾斜式尾坎的Ⅳ型消力池,池长等于没有消能工时水平床上形成的水跃长。垦务局已经建议将SAF型消力池应用于佛汝德数大于1.7的小型建筑物中,消力池长度可减小70％以上。对低佛汝德数来流,印度标准研究所1969年采用带有消力块、陡槽消力墩和消力栏的消力池即IS、型,这种消力池的池长大约为四倍跃后水深。1975年N·G布豪米柯使用不同斜度
I. Overview For the water diversion basin whose inflow is less than 4.5, it is more difficult to design a short and effective stilling basin due to its weak and unstable water formation. The United States Bureau of Reclamation in 1957 recommended a type IV trough with a chute trough pier (toe pier) and a sloping tail ridge with a pool length equal to the length of water formed on a horizontal bed without energy dissipation. The Bureau of Reclamation has proposed to apply the SAF-type sink to small buildings with a Frudge number greater than 1.7, reducing the length of the sink by more than 70%. On the low number of Buddhas, the Indian Institute of Standards used a tank of IS, type, with a dissipative mass, a chute pier and a ballast bar in 1969. The pool length of this pool was about Four times after the water depth. 1975 N.G. Buhmitch uses different slopes