管道水头损失计算方法公式

mbm3/hm3/s1经验公式一管道的糙率n值表0.01237.440.010402哈森•威廉斯公式常用管材的C值表13037.440.010403经验公式二f、m、b值表1.855.0456500037.440.01040塑料硬管,玻璃钢管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5.65*1051.855.04旧钢管、旧铸铁管6.25*1051.95.1管道种类玻璃钢管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取值（n）（C）（f）塑料管石棉水泥管新钢管、新（光滑）铸铁管常用管材的C值表f、m、b值表3/16222****16*35.6dLQnhf852.1871.49)(**10*13.1CQdLhfbmfdfLQh/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铝合金管、镀锌钢管、锦塑软管半旧钢管、铸铁管使用多年的旧钢管、铸铁管、离心浇筑砼管普通砼管管长L沿程水头损失hfmmmmm120001000.100414.51120001000.100244.94120001000.100459.09Cn1600.0131500.0131400.0141300.012管道种类玻璃钢管管道沿程水头损失计算表管径d塑料管石棉水泥管新钢管、新（光滑）铸铁管管道的糙率n值表常用管材的C值表管道种类缸瓦管（带釉）混凝土和钢筋混凝土管（雨水管）混凝土和钢筋混凝土管（污水管）石棉水泥管1200.0131100.0121000.008490钢管玻璃钢管铝合金管、镀锌钢管、锦塑软管半旧钢管、铸铁管使用多年的旧钢管、铸铁管、离心浇筑砼管普通砼管铸铁管管道种类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流量Ｑ损失扬程(ｍ)止回阀水管及管路附件损失扬程表水管口径Ｄ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损失扬程(ｍ)止回阀水管进口弯管大小头水管及管路附件损失扬程表