引水系统水力计算.xls
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1、某某电站渠道水力计算( i=1/1000)1:设计基本参数;Q25渠道设计流量;n0.016糙率;m1边坡系数;I0.001底坡;2:水力最优断面尺寸计算;梯形渠道水深计算:hm2.4561水深;bm2.0347vm2.2666清水渠道不淤流速v/=0.30.5m/s;衬砌渠道不存在冲刷流速问题。3:实用经济断面尺寸的计算;底坡采用水力最优断面设计时底坡;a1.01平衡条件01.7278h/hm0.8228不同a值经济断面计算结果。ah/hm=b/hhbvR110.8292.45612.03612.26591.22821.010.8231.7292.02143.4952.2421.21041.
2、020.7612.2221.86914.15312.2211.19241.030.7172.6621.7614.68782.20141.17461.040.6833.081.67755.16672.17751.1584由于某某电站位于山区河流,坡面逗,开挖量大,建议采用窄深式梯形明渠。 3/88/322 4 2 1mnQh mmi QvvC Ri1/61 CRn 221mmbhmm m mmmQ v bmhh 2 2.520mmhhaahh 2 22 1mbammmh h h2/3mmmvRa vR 4:电站渠道采用参数;Q25流量;n0.016糙率;i0.001底坡;m1边坡系数;b2.5底
3、宽 ;h2.4561水深;v2.0538流速;Fb0.6超高;D2动力渠道渠岸宽度一般为23.5m。 5:隧洞断面采用参数;i0.00248b3n0.014h2.456124.9945v3.3929衬砌隧洞段 5/32/32 bhQin bh 某某电站渠道水力计算( i=1/200)1:设计基本参数;Q25渠道设计流量;n0.016糙率;m1边坡系数;I0.0005底坡;2:水力最优断面尺寸计算;梯形渠道水深计算:hm2.797水深;bm2.3171vm1.7477清水渠道不淤流速v/=0.30.5m/s;衬砌渠道不存在冲刷流速问题。3:实用经济断面尺寸的计算;底坡采用水力最优断面设计时底坡;
4、a1.01平衡条件01.7278h/hm0.8228不同a值经济断面计算结果。ah/hm=b/hhbvR110.8292.7972.31871.74721.39871.010.8231.7292.30193.981.72891.37841.020.7612.2222.12854.72951.71271.35791.030.7172.6622.00545.33841.69751.33761.040.6833.081.91045.8841.67891.3192由于某某电站位于山区河流,坡面逗,开挖量大,建议采用窄深式梯形明渠。 3/88/322 4 2 1mnQh mmi QvvC Ri1/61
5、CRn 221mmbhmm m mmmQ v bmhh 2 2.520mmhhaahh 2 22 1mbammmh h h2/3mmmvRa vR 4:电站渠道采用参数;Q25流量;n0.016糙率;i0.0005底坡;m1边坡系数;b2.5底宽 ;h2.797水深;v1.6874流速;Fb0.6超高;D2动力渠道渠岸宽度一般为23.5m。 5:隧洞断面采用参数;i0.00115b3n0.014h2.79720.0038衬砌隧洞段 5/32/32 bhQin bh 渠道设计参数序号点位桩号段长渠型比降底宽水深沿程水头损失局部水头损失水头损失累计损失水面高程渠底高程渠顶高程(m)(m)(m)(m
6、)(m)(m)(m)(m)(m)(m)0渠0+000.000+218.28 218.283.242103.702100.462106.001渠0+218.280+418.28 200.00隧洞0.0013.002.460.2000.20000.20002102.722100.262103.362渠0+418.280+428.2810.00渐变0.0013.002.460.0100.11120.12120.32122102.602100.142103.243渠0+428.280+483.0554.77梯形0.0012.502.460.0550.05500.37622102.542100.0821
7、03.184渠1渠0+483.050+490.507.45梯形0.0012.502.460.0070.00640.01340.38962102.532100.072103.175渠0+490.500+707.79 217.29梯形0.0012.502.460.2170.21700.60662102.312099.852102.956渠2渠0+707.790+728.3620.57梯形0.0012.502.460.0210.01760.03860.64522102.272099.812102.917渠0+728.360+759.5031.14梯形0.0012.502.460.0310.03100
8、.67622102.242099.782102.888渠0+759.500+769.5010.00渐变0.0012.502.460.0100.11120.12120.79742102.122099.662102.769渠3渠0+769.500+781.5512.04矩形0.0013.002.460.0120.04420.05620.85362102.072099.612102.7110渠0+781.550+798.3816.83矩形0.0013.002.460.0170.01700.87062102.052099.592102.6911渠4渠0+798.380+806.918.53矩形0.00
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