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1、某市一工业区拟采用合流排水系统，其管渠的布置如图1所示，各设计管段 的管长、排水面积、各管段的工业废水设计流量见表2。其他原始资料如下:(1)设计雨水量的计算公式及参数：暴雨强度公式为:10020(1 + 0.56lg P) q =t + 36L/ (s.ha)；设计暴雨重现期P=1a；地面集水时间t =10min,折减系数m=2；管段编号管道长度L (m)排水面积(ha)本段工业废水流量(L/s)面积编号本段面积1285I1.202023128II1.79103459m0.836045138W1.93056165.5V2.1235该设计区域综合径流系数为寸= 0.45。图1合流制排(2) 设
2、计人口密度为300cap/ha,生活污水量标准:(3) 截流干管的截流倍数n0采用3。试计算：各设计管段的设计流量，并进行水若在5点设置溢流井，则56管段E为多少？(25分)注：流量计算精确到小数点后两位，设计流量的 流流量。计算用钢筋混凝土圆管(满流)、n=0.013白设计管道输水能力Q 在提供的水力计算表中选取与设计总流量值相等或稍大的最接近一档的流量值。写出在5点设置溢流井后，56管段的设计流量及5点的溢流量的计算步骤。表2截流式合流干管水力计算表管段编号管道长度L （m）排水面积（ha）管内流行时间（min）设计流量（L/s）管径(mm)设计坡度（%。）本段转输总计，2 = V雨水生活
3、污水工业废水溢流井转输水量总计1234567891011121314124502360034600457005680056700附表3 钢筋混凝土圆管水力计算表（满流） n=0.013450600v (m/s)i(%o)v (m/s)i(%o)v (m/s)1240.781.8920.440.4080.32700i(%o)0.179800v (m/s)0.25i(%o)0.088126128132136140竺1481522840.791.9530.450.4210.82.0160.450.832.1440.470.862.2750.480.882.4110.50.912.5510.510.9
4、32.6950.520.962.8420.542923003083163243964004084164244320.330.1850.250.0910.4350.4620.4910.520.550.5810.6131.799.92312.1391.841.891.941.992.042.492.522.572.622.672.7210.48911.07211.6712.28512.91419.29219.68420.47921.2922.11722.9591.031.061.091.121.151.41.411.441.471.51.532.2622.3872.5162.6492.7844.1
5、594.2444.4154.594.7684.950.330.340.350.360.370.380.390.740.760.780.80.820.841.031.041.061.081.11.120.1910.2030.2160.2280.2420.2550.2690.940.9941.0491.1061.1641.2241.8281.8651.9412.0172.0962.1760.250.260.270.280.290.290.30.570.580.60.610.630.640.790.80.810.830.840.860.0940.10.1060.1120.1190.1250.1320
6、.4610.4880.5150.5430.5710.60.8970.9150.9520.991.0281.067附表3 钢筋混凝土圆管水力计算表（满流） n=0.013(mm)Q (L/s)v (m/s)5503.465603.525703.585803.655903.716003.776103.846203.96303.966504.096704.216904.347104.467304.597504.727704.84450600700800i(%o)37.21538.5839.9741.38542.82444.28845.77747.2948.82851.97755.22558.5716
7、2.01665.55969.20172.94v (m/s)i(%o)v (m/s)i(%)v (m/s)i(%o)1.951.982.022.052.092.122.162.192.232.32.372.442.512.582.652.728.0248.3188.6188.9239.2339.5499.8710.19610.52811.20711.90712.62813.37114.13514.9215.7261.431.461.481.511.531.561.591.611.641.691.741.791.841.91.953.5263.6563.7873.9224.0584.1974.3384.4814.6274.9255.2335.555.8766.2126.5576.9121.091.731.111.131.151.171.191.211.231.251.291.331.371.411.451.491.531.7931.8581.9241.9912.0592.1282.1982.272.4162.5672.7232.8833.0483.2173.391
合流排水管道计算
