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1、图1合流制排水管道的平面布置10020(1 +0.56 lg P)暴雨强度公式为：q -L/ (s?ha)；t+36设计暴雨重现期 P=1a;地面集水时间t = 10min,折减系数 m=2;该设计区域综合径流系数为少=0.45。管段 编p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1285I1.202023128n1.79103459m0.836045138w1.93056165.5V2.1235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
2、数：(2)设计人口密度为 300cap/ha,生活污水量标准按 100L/ (cap?d)计。(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，并进行水力计算，结果填入表2中；若在5点设置溢流井，则 56管段的设计流量及 5点的溢流量各为多少？(25分)注：流量计算精确到小数点后两位，设计流量的总计(表 2中的第12项)不得忽略旱流流量计算用钢筋混凝土圆管(满流)、n= 0.013的水力计算表见附表 3。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
3、流式合流干管水力计算表管段 编R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D(mm)设计 坡度 （%。）设计 流速（m/s）设计管 道输水 能力Q' （L/s）备注本段转输总计£ t2 =£ L vt2 =L v雨水生活污水工业废水溢流井 转输水量总计123456789101112131415161712450不设溢流井23600346004570056800567005#设溢流井附表3 钢筋混凝土圆管水力计算表（满流）n=0.013D (mm)Q (L/s、450600700800v (m/s)i( %o)v (m/s)i(
4、%o)v ( m/s)i( %o)v (m/s)i（ %。）1240.781.8920.440.4080.320.1790.250.0881260.791.9530.450.4210.330.1850.250.0911280.82.0160.450.4350.330.1910.250.0941320.832.1440.470.4620.340.2030.260.11360.862.2750.480.4910.350.2160.270.1061400.882.4110.50.520.360.2280.280.1121440.912.5510.510.550.370.2420.290.119148
5、0.932.6950.520.5810.380.2550.290.1251520.962.8420.540.6130.390.2690.30.1322841.799.92312.1390.740.940.570.4612921.8410.4891.032.2620.760.9940.580.4883001.8911.0721.062.3870.781.0490.60.5153081.9411.671.092.5160.81.1060.610.5433161.9912.2851.122.6490.821.1640.630.5713242.0412.9141.152.7840.841.2240.6
6、40.63962.4919.2921.44.1591.031.8280.790.8974002.5219.6841.414.2441.041.8650.80.9154082.5720.4791.444.4151.061.9410.810.9524162.6221.291.474.591.082.0170.830.994242.6722.1171.54.7681.12.0960.841.0284322.7222.9591.534.951.122.1760.861.067“f、D (mm)Q (Us、.、450600700800v (m/s)i( %o)v (m/s)i( %o)v (m/s)i（
7、 %。）v (m/s)i( %o)5503.4637.2151.958.0241.433.5261.091.735603.5238.581.988.3181.463.6561.111.7935703.5839.972.028.6181.483.7871.131.8585803.6541.3852.058.9231.513.9221.151.9245903.7142.8242.099.2331.534.0581.171.9916003.7744.2882.129.5491.564.1971.192.0596103.8445.7772.169.871.594.3381.212.1286203.94
8、7.292.1910.1961.614.4811.232.1986303.9648.8282.2310.5281.644.6271.252.276504.0951.9772.311.2071.694.9251.292.4166704.2155.2252.3711.9071.745.2331.332.5676904.3458.5712.4412.6281.795.551.372.7237104.4662.0162.5113.3711.845.8761.412.8837304.5965.5592.5814.1351.96.2121.453.0487504.7269.2012.6514.921.956.5571.493.2177704.8472.942.7215.72626.9121.533.3917904.9776.7792.7916.5542.057.2751.573.569