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1、 目录资料：2(一) 计算测槽长度L.3（二）计算测槽末端水深。3（三）确定控制断面坎高。4（四）计算各断面流量。5(五)测槽水面曲线计算。6（六）泄槽计算。13（七）泄槽横断面布置15（八）消能防冲设计16资料：某大（2）型水库，正常蓄水位为30m,设计洪水位为32m(相应泄流量为150m3/s),校核洪水位33.43m,（相应泄流量为210m3/s)。该地区最大风速的多年平均值为16.9m/s,坝肩山头较高，岸坡较陡。布置溢洪道泄槽处山坡坡度约为1:4，泄槽水平投影长约65m,泄槽宽8m。该地区地震基本烈度为度。地表为全风化粉砂岩，基岩为寒武系八村组粉粉砂岩强风化层。强风化层地基承载力标准
2、值可取500Kpa。由坝肩山头较高，岸坡较陡可以知道，设计该溢洪道为侧槽式溢洪道。 堰顶高程取30m.(1)计算测槽长度L.L=采取设计洪水位计算，式中Q溢洪道最大泄流量取150 m3/s，采取宽顶堰，则堰顶水头H0=32-30=2m。流量系数m=0.35.测槽底坡i=0.1.代入数据：L=34.21m。（2）计算测槽末端水深。由设计地形(泄槽宽8m)可知, 测槽末端宽度bL=8m。起始断面宽度与测槽末端宽度b0/bL采用0.5值，则起始断面宽度b0=4m。测槽末端水深hL=(1.2-1.5)控制断面水深hk。hk=q=/(s.m)1代入数据得hk= =3.4m.又查资料可知道bL/bO=5时
3、hL= 1.5 hk。bL/bO=1时hL= 1.2hk。而本设计中bL/bO=2，用内插法求得hL= 1.275 hk。hL= 1.275 hk。=1.275*3.4=4.3m。（三）确定控制断面坎高。控制断面坎高d=(hL-hk)+(1+()hL=4.3m。 hk=3.4m.vL=3.44m/s。vk=代入数据得d=(4.3-3.4)+(1+() =-0.226m。由于d0,故不设坎。注测槽断面采用梯形设计。m1=m2=0.5.（四）计算各断面流量。将测槽沿程划分若干计算段，从起始段断面起骗号（1,2,3,4,5,6）计算各断面流量Qi=q*i.i=L/6=34.21/5=6.842m。q
4、=Q/L=150/34.21=4.38m3/(s.m)则Q1=0m/sQ2=4.38*6.842=29.9592m/sQ3=4.38*(6.842*2)=59.9184m/sQ4=4.38*(6.842*3)=89.8776m/sQ5=4.38*(6.842*4)=119.8368m/sQ6=4.38*(6.842*5)=149.796m/s(五)测槽水面曲线计算。根据公式:hi=hi+1+y-i0Xi y=（V2-V1）+JX分别算出6个断面的底宽。已知b1=4m，b6=8m。采用内插法算出b2 b3 b4 b5 。算出b2。=4.8m. b3 =5.6m, b4=6.4m, b5 =7.2
5、m.以第六和第五断面为分析。由上解知道vL=3.44m/s。则v6=3.44m/s。V5=h5=h6+y-0.1*6.842先假设y=1。可以算出h5值来。再把h5值代入公式 y=（V2-V1）+JX中来验算y值。改动y=1值，使验算y值和假设假设y值相同接近，查看得h5=3.9058m.试算表格如下：5-6断面h5b5A5X5R5Q5V53.90587.235.749415.933632.243644119.83683.3521353.91587.235.860515.955992.247463119.83683.3417493.94587.236.1944316.023082.258894
6、119.83683.3109183.97587.236.5292516.090162.270285119.83683.2805713.95587.236.3059416.045442.262695119.83683.300749h6b6A6X6R6Q6V64.3843.64517.615092.477705149.7963.4321464.3843.64517.615092.477705149.7963.4321464.3843.64517.615092.477705149.7963.4321464.3843.64517.615092.477705149.7963.4321464.3843.6
7、4517.615092.477705149.7963.432146(v5+v6)/2gv5+v6v6-v5Q6-Q5Q6+Q5V（56平均）R（56平均）J0.345783926.7842810.08001129.9592269.63283.39214032.3606742410.0010580.345254566.7738950.09039729.9592269.63283.3869472752.3625838240.0010540.343683196.7430640.12122729.9592269.63283.3715320562.3682993190.0010410.342136426
8、.7127170.15157529.9592269.63283.3563582592.3739951230.0010280.343164896.7328950.13139629.9592269.63283.3664475722.3702000960.001036yy(验证）0.290.295560.30.2982760.330.3062810.360.3140780.340.3089034-5断面h4b4A4X4R4Q4V43.63166.429.836514.52052.05478489.87763.0123373.92166.432.7877115.168962.161589.87762.
9、7411983.52166.428.7390714.274542.0133189.87763.1273663.62166.429.7362314.498142.05103789.87763.0224943.57166.429.236414.386342.03223489.87763.074167h5b5A5X5R5Q5V53.90587.235.749415.933632.243644119.83683.3521353.90587.235.749415.933632.243644119.83683.3521353.90587.235.749415.933632.243644119.83683.
10、3521353.90587.235.749415.933632.243644119.83683.3521353.90587.235.749415.933632.243644119.83683.352135(v4+v5)/2gv4+v5v5-v4Q5-Q4Q5+Q4V（45平均）R（45平均）J0.324386966.3644720.33979829.9592209.71443.1822360952.1492137720.0010550.31056746.0933320.61093729.9592209.71443.0466662252.2025717140.0009360.330249796.
11、4795010.22476929.9592209.71443.2397504282.1284769880.0011080.324904656.3746290.3296429.9592209.71443.1873146642.1473404420.001060.327538356.4263020.27796729.9592209.71443.2131511762.137938570.001083yy(验证）0.410.4123810.70.4664830.30.3875030.40.4102310.350.3991523-4断面h3b3A3X3R3Q3V33.41745.624.9767513.
12、241541.88624259.91842.3989673.34745.624.3479813.085011.86075359.91842.4609183.44745.625.2477213.308621.89709559.91842.373223.54745.626.1574613.532231.93297559.91842.2906813.64745.627.077213.755831.96841659.91842.212873h4b4A4X4R4Q4V43.63166.429.836514.52052.05478489.87763.0123373.63166.429.836514.520
13、52.05478489.87763.0123373.63166.429.836514.52052.05478489.87763.0123373.63166.429.836514.52052.05478489.87763.0123373.63166.429.836514.52052.05478489.87763.012337(v3+v4)/2gv3+v4v4-v3Q4-Q3Q4+Q3V（34平均）R（34平均）J0.275805525.4113040.6133729.9592149.7962.7056521091.9705131530.0008560.278963085.4732560.55141929.9592149.7962.7366278491.9577686360.0
