管道水头损失三种计算方法

mbm3/hm3/s1经验公式一管道的糙率n值表0.0084125.000.034722哈森---威廉斯公式常用管材的C值表150125.000.034723经验公式二f、m、b值表1.774.7794800125.000.03472管道种类fmb塑料硬管,玻璃钢管0.948*1051.774.77铝管、铝合金管0.861*1051.744.77管道种类玻璃钢管f、m、b值表管道沿程水头损失计算表公式名称序号公式管道种类流量Q糙率nCf常用管材的C值表3/16222****16*35.6dLQnhf852.1871.49)(**10*13.1CQdLhfbmfdfLQh/石棉水泥管1.455*1051.854.89新钢管、新铸铁管5.65*1051.855.04旧钢管、旧铸铁管6.25*1051.95.1当地材料管n=？7.76n2*1092.05.33钢筋砼管n=0.0131.312*1062.05.33钢筋砼管n=0.0141.516*1062.05.33钢筋砼管n=0.0151.749*1062.05.33钢筋砼管n=0.0172.24*1062.05.33使用多年的旧钢管、铸铁管、离心浇筑砼管普通砼管铝合金管、镀锌钢管、锦塑软管半旧钢管、铸铁管塑料管石棉水泥管新钢管、新（光滑）铸铁管管长L沿程水头损失hfmmmmm16312000.2007.6316312000.2008.1416312000.2008.41nC0.0131600.013管道的糙率n值表管道种类缸瓦管（带釉）管道种类玻璃钢管混凝土和钢筋混凝土管（雨水管）管道沿程水头损失计算表管径d常用管材的C值表1500.0141400.0121300.0131200.0121100.008410090使用多年的旧钢管、铸铁管、离心浇筑砼管普通砼管铝合金管、镀锌钢管、锦塑软管半旧钢管、铸铁管钢管玻璃钢管塑料管石棉水泥管新钢管、新（光滑）铸铁管混凝土和钢筋混凝土管（污水管）石棉水泥管铸铁管管道种类n缸瓦管（带釉）0.013混凝土和钢筋混凝土管（雨水管）0.013混凝土和钢筋混凝土管（污水管）0.014石棉水泥管0.012铸铁管0.013钢管0.012玻璃钢管0.0084管道的糙率n值表管道种类C玻璃钢管160塑料管150石棉水泥管140新钢管、新（光滑）铸铁管130铝合金管、镀锌钢管、锦塑软管120半旧钢管、铸铁管110使用多年的旧钢管、铸铁管、离心浇筑砼管100普通砼管90常用管材的C值表管道种类fmb塑料硬管0.948*1051.774.77铝管、铝合金管0.861*1051.744.77石棉水泥管1.455*1051.854.89新钢管、新铸铁管5.25*1051.855.04旧钢管、旧铸铁管6.25*1051.95.1当地材料管n=？7.76n2*1092.05.33钢筋砼管n=0.0131.312*1062.05.33钢筋砼管n=0.0141.516*1062.05.33钢筋砼管n=0.0151.749*1062.05.33钢筋砼管n=0.0172.24*1062.05.33f、m、b值表表五流速Ｖ水底闸阀管阀(全开)mm口寸m3/hL/sm/s(每米)ξ=5ξ=0.1ξ=1.7502″205.52.80.37820.040.68753″4512.52.820.2272.030.040.691004″8022.22.80.15720.040.681255″10027.72.270.0751.30.0260.441506″15041.72.360.0641.40.0280.472008″28077.82.450.0481.50.030.5125010″4861352.750.0441.90.0380.6530012″7922203.110.0442.50.050.8535014″12603503.640.0491.350.0671.1340016″14404003.180.0311.030.050.8550020″20165602.850.010.830.040.68止回阀水管口径Ｄ水管及管路附件损失扬程表流量Ｑ损失扬程(ｍ)出口(淹没出流)ξ=0.5ξ=0.2ξ=0.5ξ=0.2ξ=0.1ξ=0.1ξ=0.25ξ=1.00.20.080.20.080.040.040.10.40.20.080.20.080.040.040.10.4050.20.080.20.080.040.040.10.40.130.0520.130.0520.0260.0260.0650.2630.140.0560.140.0560.0280.0280.070.2840.150.060.150.060.030.030.0750.3060.190.0760.190.0760.0380.0380.0960.3850.250.10.250.10.050.050.1250.4930.340.0670.340.0670.0670.0670.170.6750.260.050.260.050.050.050.1250.5150.210.040.210.040.040.040.1050.414止回阀水管进口弯管大小头损失扬程(ｍ)