摘要
通过建立水工物理模型,合理的确定堰顶高程,在设计、校核水位下,有效的增加下泄流量2.2%和3.2%;调整环形掺气坎起坡点高程及坡度,水流流态稳定,水流掺气效果较好;增加挑流坎、掺气孔可有效的降低堰面负压值,使负压值满足规范设计要求。
By establishing the physical model for a hydraulic structure to conform reasonably the crest elevation,discharge was increased effectively by 2.2% and 3.2% under water design and check levels. The elevation and gradient of the initial sloping spot in circle air mixing bucket were adjusted to appear that the flow regime was stable, and the effect of water flow mixing was better. To increase the bucket and mixing air hole may reduce effectively the negative pressure value of weir surface for the negative value to meet the demands of specification design.
出处
《黑龙江水利科技》
2016年第4期163-165,共3页
Heilongjiang Hydraulic Science and Technology
关键词
水工模型
溢洪洞
掺气坎
挑流坎
流态稳定
hydraulicmodel
spillway
air mixing bucket
trajectory bucket
fluid stability
