摘要
分洪隧洞进口水力条件对工程发挥效益起决定性作用。以缙云分洪隧洞为例,采用1:50正态物理模型,对隧洞进口过渡段2种收缩角度方案进口水力特性开展试验研究。结果表明:在开口宽度相同的情况下,减小上游侧导墙收缩角时水流进流流态更佳,水面线更为平顺,进口水头损失减小,有利于分洪隧洞更好地发挥效益。
The inlet hydraulic condition of flood diversion tunnel plays a decisive role in the project.Taking Jinyun flood diversion tunnel as an example,the 1:50 normal physical model is adopted to carry out experimental research on the flow patterns of inlet water with two shrinkage angle schemes.The results show that with the same opening width,the inflow flow pattern is better,the water surface line is smoother and the inlet head loss is reduced,which is conducive to the better performance of the flood diversion tunnel.
作者
杨坚玲
韩晓维
YANG Jianling;HAN Xiaowei(Jinyun County Water Investment Co.,Ltd.,Jinyun 321400,Zhejiang,China;Zhejiang Institute of Hydraulics&Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310017,Zhejiang,China;Zhejiang Provincial Key Laboratory of Estuary and Coast,Hangzhou 310017,Zhejiang,China)
出处
《浙江水利科技》
2022年第6期87-91,共5页
Zhejiang Hydrotechnics
关键词
分洪隧洞
进口过渡段
收缩角
流态
水面线
水头损失
diversion tunnel
inlet transition section
contraction angle
flow pattern
surface line
head loss
