U型输水渠道横断面计算

加大流量半径r/m渠道水深/m

0.6960.820

0.249

0.305

加大流量

<0.50.5~1.0 1.0~1010~30a10.1~0.150.15~0.20.2~0.350.35~0.5a 0.2~0.30.3~0.40.4~0.60.6~0.8

由加大流量计算结果

U形渠道衬砌超高a1和渠堤超高a

()1/4

3/8

2

1°2sin cos 290a a r N N tg παααα=

????-+-+ ???

????

??

)sin 1(=-+=ααN r h m

r h ??)sin 1(1=-=αm

h h h ??12=-=??

)tan cos 2(]2sin )901([22202=++--=ααααπh r h r A s

m A Q v /??/==Ri

AC Q =设计