流量计算 雨水污水流量计算方法

日处理量： 27040d /m 3 33327040270400.313312.96/243600

Q m d m m s L s ====⨯ 3112600/145.83/Q m d L s ==

3214440/167.13/Q m d L s ==

因为总变化系数:

0.110.11

2.7 2.7 1.56145.83z K Q === 所以设计最大流量:

max 12 1.56145.83167.13394.62/z Q K Q Q L s =⨯+=⨯+=

远期：3198002464044440/514.35/Q m d L s '=+==

3119800/229.17/Q m d L d '==

3224640/285.19/Q m d L s '==

0.110.11

2.7 2.7 1.49229.17z K Q '=== max 12 1.49229.17285.19626.65/z Q K Q Q L s =⨯+=⨯+=

栅条间隙数：设栅前水深0.4m ，过栅流速0.9/v m s =，栅条间隙宽度0.06m ，格栅倾角 060

20.221n ===≈个 栅槽宽度:设栅条宽度S 0.01m =

()10.01200.0621 1.46B S n bn m =-+=⨯+⨯= 进水渠道渐宽部分的长度：1101 1.460.65 1.112tan 2tan 20

B B l m α--=== 12 1.110.5622

l l m ===

442233

010.010.9sin 2.42sin 6030.0220.0619.6S v h K m b g βα⎛⎫⎛⎫==⨯⨯⨯⨯= ⎪ ⎪⎝⎭⎝⎭ 120.40.020.30.72H h h h m =++=++=

1120

0.40.30.5 1.0 1.110.560.5 1.0 3.57tan tan 60H L l l m α+=++++=++++= 33max 1864000.3860.02864000.67/0.2/10001000

z Q w W m d m d K ⨯⨯===>⨯

max 143.51440.0080.40.6

Q n bhv ===≈⨯⨯个 ()10.011430.008144 2.58B S n bn m =-+=⨯+⨯=

1101 2.580.65 2.652tan 2tan 20B B l m α--=

== 12 2.65 1.3322

l l m === 4

4

2233010.010.6sin 2.42sin 6030.1520.00819.6

S v h K m b g βα⎛⎫⎛⎫==⨯⨯⨯⨯= ⎪ ⎪⎝⎭⎝⎭ 120.40.150.30.85H h h h m =++=++=

1120

0.40.30.5 1.0 2.65 1.330.5 1.0 5.88tan tan 60H L l l m α+=++++=++++= 33max 1864000.2350.1086400 2.03/0.2/10001000

z Q w W m d m d K ⨯⨯===>⨯