段村水利枢纽课程设计说明书[1]

水力学课程设计

下游河槽中的流速 v?q6.47??3.536m/s>3.0m/s ht1.83估算水深d= hc''- ht=3.901-1.83=2.071m

E0'?E0?d=11.14+2.071=13.211m,带入下式：

E0?hc?q22g?h22c

6.4722.6367 13.211=hc? ?h?c2'2'22?9.8?0.9?hchc' hc'?2.6367 '13.211?hc用迭代逼近法可得：hc'=0.4546m

hc'8q20.45468?6.472hc?(1??1)?(1??1)?4.1136m22ghc'39.8?0.45463''

q2q26.4726.472?Z?????0.6729m2g?2ht22g(?hc'')219.6?0.92?1.83219.6?(1.05?4.1136)2 有d. hc'' ht ?Z带入式：

hT=d??Z?ht=2.071+0.6729+1.83=4.5739

??hT4.5739??1.112?1.10 hc''4.1136故所设池深不满足要求，再设d=1.79m得E0'=12.93m

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水力学课程设计

hc'=0.4598m hc''=4.087m ?Z=0.6714m hT=4.2612m

?=1.0501,满足要求，则消力池池深为1.79m.

2.计算消力池的长度LK

水跃长度按LJ?6.9(h''c?hc)式计算，带入数

Lj?6.9?h?c??hc??6.9??4.078?0.4598??25.027m 消力池长度：

Lk??0.7?0.8?Lj?0.75?25.725?18.77m

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