污水常用管径在最大充满度和最小坡度下的流量表

排水管道设计本项目管径设计参照《河南省农村生活污水治理技术导则》（试行）要求进行设计，具体要求如下：（1）污水收集管网的管径大小根据水量合理计算，避免因管径过小而造成堵塞，也防止因管径过大造成的浪费。

管径设计应考虑农村生活污水间歇性排放的特点，适当增大坡度防止管道堵塞。

（2）污水收集管网流量、流速按照《室外排水设计规范》（GB50014）计算。

（3）污水收集管道粗糙系数、最大设计充满度、最大设计流速、最小设计流速应按照《室外排水设计规范》（GB50014）取值。

最小管径与相应最小设计坡度，可按下表取值。

1、最小管径与最小设计坡度表7.4-1最小管径与相应最小设计坡度注：管道坡度不能满足上述要求时，可酌情增大管径，但应采取防护、清淤措施。

2、管道与最大设计充满度重力流污水管道最大设计充满度可按表8.4-2取值。

表7.4-2管道与最大设计充满度一览表注：在计算污水管道充满度时，不包括短时突然增加的污水量，但当管径小于或等于300mm时应按满流复核。

3、设计流速排水管道流速计算采用曼宁公式：V=1/n×R^(2/3)×I^(1/2)式中 V--流速(m/s)Ｉ—水利坡降n－粗糙系数R--水利半径（m），R=A/PP--湿周（m）A--过水断面面积（m2)一般情况下，农村污水量较小，管内流速较低，管道设计的原则是保证管道内的最小流速，以防止颗粒物质的沉积，污水管道的最小流速为0.6m/s。

4、管径各个村庄根据规模大小，产生的污水量多少，安装适宜管径的污水管道，项目区内农村污水管网通常是由小管径塑料管和PE双壁波纹管构成，本项目接户管采用ϕ110UPVC排水管，支管和主管网采用ϕ225和ϕ315HDPE双壁波纹管作为排水管。

5、管道覆土根据现场实际查看情况，因河南省冬季冻土深度大约为10~20cm，项目区巩义市涉村镇地区的污水管道一般埋深较浅，管内流速较低。

正常条件下，在无车辆通行的路面下铺设管道时，其管顶最小覆土应为人行道下0.6m，在有车辆通行的区域，管顶最小覆土应为车行道下0.7m。

编号 面积(hm2) 编号 面积(hm2) 编号 面积(hm2) 编号 面积(hm2)
1 17.0965 7 8.4433 13 8.7783 19 2.3131
2 5.3427 8 2.8891 14 3.0795 20 6.367
3 4.6837 9(公园) 6.088 15 7.4513 21 4.3527
管内底 上端 下端 14 15 118.700 118.070 118.060 116.960 132.110 131.450 131.450 130.730 130.680 129.900 115.900 115.240 115.240 114.670 132.920 132.290 132.290 131.370 131.330 130.510 130.460 129.940 116.300 115.700 115.700 115.220 115.220 114.630
管段长度 管段编号
设计流量
管道直径
管段编号 1 10～9 9～8 8～7 7～6 6～5 5～4 4～3 3～2 2～11 1～12 12～13 13～14 14～15 15～16
L（m） 2 160 90 240 240 130 230 200 145 140 240 110 100 200 160
水面 下端 11 120.5 120.5 119.6 118.2 118.1 117.3 115.5 134.2 116.3 132.4 118.2 118.5 118.5 119.2 上端 12 118.850 118.220 132.310 131.650 130.920 116.050 115.390 133.100 132.470 131.550 130.700 116.450 115.850 115.370 下端 13 118.220 117.120 131.650 130.930 130.140 115.390 114.820 132.470 131.550 130.730 130.180 115.850 115.370 114.780

2035.7
2239.3
2442.9
2646.5
2850.0
3053.6
水在水平的平面上运动，当阻力可以忽略时，水的压力p与水的流速V关系如下：
p + ρV^2/2 = C式中C为常数
式中：p——压强；ρ————水密度；V——流速。
100
11.3
17.0
22.6
28.3
33.9
39.6
45.2
50.9
56.5
62.2
67.9
73.5
79.2
84.8
1251Biblioteka .726.535.3
44.2
53.0
61.9
70.7
79.5
88.4
97.2
106.0
114.9
123.7
132.5
150
25.4
38.2
50.9
63.6
76.3
89.1
101.8
831.3
900.5
969.8
1039.1
400
181.0
271.4
361.9
452.4
542.9
633.3
723.8
814.3
904.8
995.3
1085.7
1176.2
1266.7
1357.2
450
229.0
343.5
458.0
572.6
687.1
801.6
916.1
1030.6
1145.1
1259.6
管径流速流量管径流速流量对照表流量流速管径计算软件管径流速流量计算公式管径压力流速对照表流速与管径的关系已知压力管径求流速管径与流速对照表管径流速管径流速对照表

管径 流量流速0.10.110.180.290.450.71 1.19 1.81 2.83 4.42 6.3611.3117.6725.4534.6445.2457.2670.69101.790.20.230.350.580.90 1.41 2.39 3.62 5.658.8412.7222.6235.3450.8969.2790.48114.51141.37203.580.30.340.530.87 1.36 2.12 3.58 5.438.4813.2519.0933.9353.0176.34103.91135.72171.77212.06305.360.40.450.71 1.16 1.81 2.83 4.787.2411.3117.6725.4545.2470.69101.79138.54180.96229.02282.74407.150.50.570.88 1.45 2.26 3.53 5.979.0514.1422.0931.8156.5588.36127.23173.18226.19286.28353.43508.940.60.68 1.06 1.74 2.71 4.247.1710.8616.9626.5138.1767.86106.03152.68207.82271.43343.53424.12610.730.70.79 1.24 2.03 3.17 4.958.3612.6719.7930.9344.5379.17123.70178.13242.45316.67400.79494.80712.510.80.90 1.41 2.32 3.62 5.659.5614.4822.6235.3450.8990.48141.37203.58277.09361.91458.04565.49814.300.9 1.02 1.59 2.61 4.07 6.3610.7516.2925.4539.7657.26101.79159.04229.02311.72407.15515.30636.17916.091 1.13 1.77 2.90 4.527.0711.9518.1028.2744.1863.62113.09176.71254.47346.36452.39572.56706.861017.881.1 1.24 1.94 3.18 4.987.7813.1419.9131.1048.6069.98124.41194.39279.92381.00497.63629.81777.541119.661.2 1.36 2.12 3.47 5.438.4814.3421.7133.9353.0176.34135.72212.06305.36415.63542.87687.07848.231221.451.30 1.47 2.30 3.76 5.889.1915.5323.5236.7657.4382.70147.03229.73330.81450.27588.11744.32918.921323.241.40 1.58 2.47 4.05 6.339.9016.7225.3339.5861.8589.06158.34247.40356.26484.90633.35801.58989.601425.031.50 1.70 2.65 4.34 6.7910.6017.9227.1442.4166.2795.43169.65265.07381.70519.54678.58858.831060.291526.811.60 1.81 2.83 4.637.2411.3119.1128.9545.2470.69101.79180.96282.74407.15554.18723.82916.091130.971628.601.70 1.92 3.00 4.927.6912.0220.3130.7648.0775.10108.15192.27300.41432.60588.81769.06973.341201.661730.391.80 2.04 3.18 5.218.1412.7221.5032.5750.8979.52114.51203.58318.09458.04623.45814.301030.601272.351832.181.90 2.15 3.36 5.508.6013.4322.7034.3853.7283.94120.87214.88335.76483.49658.09859.541087.851343.031933.962.00 2.26 3.53 5.799.0514.1423.8936.1956.5588.36127.23226.19353.43508.94692.72904.781145.111413.722035.752.10 2.38 3.71 6.089.5014.8425.0938.0059.3892.78133.60237.50371.10534.38727.36950.021202.371484.402137.542.20 2.49 3.89 6.379.9515.5526.2839.8162.2097.19139.96248.81388.77559.83761.99995.261259.621555.092239.332.30 2.60 4.06 6.6610.4016.2627.4841.6265.03101.61146.32260.12406.44585.28796.631040.501316.881625.772341.112.402.714.246.9510.8616.9628.6743.4367.86106.03152.68271.43424.12610.73831.271085.731374.131696.462442.905006004004503003502501501006532402025管径/流速/流量对照表1 青岛奥特斯机电系统工程有限公司管径单位：DN 流速单位：m/s 流量单位：m 3/h 圆周率（π）：3.1415926管 道 管 径 规 格 大 小（DN）5080125200管径 流量流速2.50 2.83 4.427.2411.3117.6729.8645.2470.69110.45159.04282.74441.79636.17865.901130.971431.391767.152544.692.60 2.94 4.597.5311.7618.3831.0647.0573.51114.86165.40294.05459.46661.62900.541176.211488.641837.832646.482.70 3.05 4.777.8212.2119.0932.2548.8676.34119.28171.77305.36477.13687.07935.171221.451545.901908.522748.272.80 3.17 4.958.1112.6719.7933.4550.6779.17123.70178.13316.67494.80712.51969.811266.691603.151979.202850.052.90 3.28 5.128.4013.1220.5034.6452.4882.00128.12184.49327.98512.47737.961004.451311.931660.412049.892951.843.00 3.39 5.308.6913.5721.2135.8454.2984.82132.54190.85339.29530.14763.411039.081357.171717.672120.583053.633.1 3.51 5.488.9814.0221.9137.0356.1087.65136.95197.21350.60547.82788.851073.721402.411774.922191.263155.423.2 3.62 5.659.2614.4822.6238.2357.9190.48141.37203.58361.91565.49814.301108.351447.651832.182261.953257.203.3 3.73 5.839.5514.9323.3339.4259.7293.31145.79209.94373.22583.16839.751142.991492.881889.432332.633358.993.4 3.85 6.019.8415.3824.0340.6261.5296.13150.21216.30384.53600.83865.191177.631538.121946.692403.323460.783.5 3.96 6.1910.1315.8324.7441.8163.3398.96154.63222.66395.84618.50890.641212.261583.362003.942474.003562.573.6 4.07 6.3610.4216.2925.4543.0165.14101.79159.04229.02407.15636.17916.091246.901628.602061.202544.693664.353.7 4.18 6.5410.7116.7426.1544.2066.95104.62163.46235.38418.46653.84941.541281.531673.842118.452615.383766.143.8 4.30 6.7211.0017.1926.8645.3968.76107.44167.88241.75429.77671.52966.981316.171719.082175.712686.063867.933.9 4.41 6.8911.2917.6427.5746.5970.57110.27172.30248.11441.08689.19992.431350.811764.322232.972756.753969.724 4.527.0711.5818.1028.2747.7872.38113.10176.71254.47452.39706.861017.881385.441809.562290.222827.434071.504.1 4.647.2511.8718.5528.9848.9874.19115.92181.13260.83463.70724.531043.321420.081854.802347.482898.124173.294.2 4.757.4212.1619.0029.6950.1776.00118.75185.55267.19475.01742.201068.771454.711900.042404.732968.814275.084.3 4.867.6012.4519.4530.3951.3777.81121.58189.97273.55486.32759.871094.221489.351945.272461.993039.494376.874.4 4.987.7812.7419.9131.1052.5679.62124.41194.39279.92497.63777.541119.661523.991990.512519.243110.184478.654.5 5.097.9513.0320.3631.8153.7681.43127.23198.80286.28508.94795.221145.111558.622035.752576.503180.864580.444.6 5.208.1313.3220.8132.5254.9583.24130.06203.22292.64520.25812.891170.561593.262080.992633.753251.554682.234.7 5.328.3113.6121.2633.2256.1585.05132.89207.64299.00531.56830.561196.001627.892126.232691.013322.234784.024.85.438.4813.9021.7133.9357.3486.86135.72212.06305.36542.87848.231221.451662.532171.472748.273392.924885.8050060040045030035020025015080100125506532402025管径/流速/流量对照表2 青岛奥特斯机电系统工程有限公司管径单位：DN 流速单位：m/s 流量单位：m 3/h 圆周率（π）：3.1415926管 道 管 径 规 格 大 小（DN）管径 流量流速4.95.548.6614.1922.1734.6458.5388.67138.54216.48311.72554.18865.901246.901697.172216.712805.523463.614987.595 5.658.8414.4822.6235.3459.7390.48141.37220.89318.09565.49883.571272.351731.802261.952862.783534.295089.385.1 5.779.0114.7723.0736.0560.9292.29144.20225.31324.45576.80901.241297.791766.442307.192920.033604.985191.175.2 5.889.1915.0623.5236.7662.1294.10147.03229.73330.81588.11918.921323.241801.082352.422977.293675.665292.965.3 5.999.3715.3523.9837.4663.3195.91149.85234.15337.17599.42936.591348.691835.712397.663034.543746.355394.745.4 6.119.5415.6324.4338.1764.5197.72152.68238.56343.53610.73954.261374.131870.352442.903091.803817.045496.535.5 6.229.7215.9224.8838.8865.7099.53155.51242.98349.89622.04971.931399.581904.982488.143149.053887.725598.325.6 6.339.9016.2125.3339.5866.90101.34158.34247.40356.26633.35989.601425.031939.622533.383206.313958.415700.115.7 6.4510.0716.5025.7940.2968.09103.14161.16251.82362.62644.651007.271450.471974.262578.623263.564029.095801.895.8 6.5610.2516.7926.2441.0069.29104.95163.99256.24368.98655.961024.941475.922008.892623.863320.824099.785903.685.9 6.6710.4317.0826.6941.7070.48106.76166.82260.65375.34667.271042.621501.372043.532669.103378.084170.466005.476 6.7910.6017.3727.1442.4171.68108.57169.65265.07381.70678.581060.291526.812078.162714.343435.334241.156107.266.1 6.9010.7817.6627.6043.1272.87110.38172.47269.49388.07689.891077.961552.262112.802759.573492.594311.846209.046.27.0110.9617.9528.0543.8374.06112.19175.30273.91394.43701.201095.631577.712147.442804.813549.844382.526310.836.37.1311.1318.2428.5044.5375.26114.00178.13278.33400.79712.511113.301603.152182.072850.053607.104453.216412.626.47.2411.3118.5328.9545.2476.45115.81180.96282.74407.15723.821130.971628.602216.712895.293664.354523.896514.416.57.3511.4918.8229.4145.9577.65117.62183.78287.16413.51735.131148.641654.052251.342940.533721.614594.586616.196.67.4611.6619.1129.8646.6578.84119.43186.61291.58419.87746.441166.321679.502285.982985.773778.864665.276717.986.77.5811.8419.4030.3147.3680.04121.24189.44296.00426.24757.751183.991704.942320.623031.013836.124735.956819.776.87.6912.0219.6930.7648.0781.23123.05192.27300.41432.60769.061201.661730.392355.253076.253893.384806.646921.566.97.8012.1919.9831.2148.7782.43124.86195.09304.83438.96780.371219.331755.842389.893121.493950.634877.327023.3477.9212.3720.2731.6749.4883.62126.67197.92309.25445.32791.681237.001781.282424.523166.734007.894948.017125.137.18.0312.5520.5632.1250.1984.82128.48200.75313.67451.68802.991254.671806.732459.163211.964065.145018.697226.927.28.1412.7220.8532.5750.8986.01130.29203.58318.09458.04814.301272.351832.182493.803257.204122.405089.387328.71500600400450300350200250125150801005065管径单位：DN 流速单位：m/s 流量单位：m 3/h 圆周率（π）：3.1415926管 道 管 径 规 格 大 小（DN）3240管径/流速/流量对照表3 青岛奥特斯机电系统工程有限公司2025管径 流量流速7.38.2612.9021.1433.0251.6087.21132.10206.40322.50464.41825.611290.021857.622528.433302.444179.655160.077430.497.48.3713.0821.4333.4852.3188.40133.91209.23326.92470.77836.921307.691883.072563.073347.684236.915230.757532.287.58.4813.2521.7133.9353.0189.59135.72212.06331.34477.13848.231325.361908.522597.703392.924294.165301.447634.077.68.6013.4322.0034.3853.7290.79137.53214.88335.76483.49859.541343.031933.962632.343438.164351.425372.127735.867.78.7113.6122.2934.8354.4391.98139.34217.71340.18489.85870.851360.701959.412666.983483.404408.685442.817837.657.88.8213.7822.5835.2955.1393.18141.15220.54344.59496.21882.161378.371984.862701.613528.644465.935513.507939.437.98.9313.9622.8735.7455.8494.37142.96223.37349.01502.58893.471396.052010.312736.253573.884523.195584.188041.2289.0514.1423.1636.1956.5595.57144.76226.19353.43508.94904.781413.722035.752770.883619.114580.445654.878143.018.19.1614.3123.4536.6457.2696.76146.57229.02357.85515.30916.091431.392061.202805.523664.354637.705725.558244.808.29.2714.4923.7437.1057.9697.96148.38231.85362.26521.66927.401449.062086.652840.163709.594694.955796.248346.588.39.3914.6724.0337.5558.6799.15150.19234.68366.68528.02938.711466.732112.092874.793754.834752.215866.928448.378.49.5014.8424.3238.0059.38100.35152.00237.50371.10534.38950.021484.402137.542909.433800.074809.465937.618550.168.59.6115.0224.6138.4560.08101.54153.81240.33375.52540.75961.331502.072162.992944.063845.314866.726008.308651.958.69.7315.2024.9038.9160.79102.73155.62243.16379.94547.11972.641519.752188.432978.703890.554923.986078.988753.738.79.8415.3725.1939.3661.50103.93157.43245.99384.35553.47983.951537.422213.883013.343935.794981.236149.678855.528.89.9515.5525.4839.8162.20105.12159.24248.81388.77559.83995.261555.092239.333047.973981.035038.496220.358957.318.910.0715.7325.7740.2662.91106.32161.05251.64393.19566.191006.571572.762264.773082.614026.275095.746291.049059.10910.1815.9026.0640.7263.62107.51162.86254.47397.61572.561017.881590.432290.223117.254071.505153.006361.739160.889.110.2916.0826.3541.1764.32108.71164.67257.30402.03578.921029.191608.102315.673151.884116.745210.256432.419262.679.210.4016.2626.6441.6265.03109.90166.48260.12406.44585.281040.501625.772341.113186.524161.985267.516503.109364.469.310.5216.4326.9342.0765.74111.10168.29262.95410.86591.641051.811643.452366.563221.154207.225324.766573.789466.259.410.6316.6127.2242.5266.44112.29170.10265.78415.28598.001063.111661.122392.013255.794252.465382.026644.479568.039.510.7416.7927.5142.9867.15113.49171.91268.61419.70604.361074.421678.792417.463290.434297.705439.276715.159669.829.610.8616.9627.7943.4367.86114.68173.72271.43424.12610.731085.731696.462442.903325.064342.945496.536785.849771.619.710.9717.1428.0843.8868.57115.88175.53274.26428.53617.091097.041714.132468.353359.704388.185553.796856.539873.409.811.0817.3228.3744.3369.27117.07177.34277.09432.95623.451108.351731.802493.803394.334433.425611.046927.219975.189.911.2017.4928.6644.7969.98118.26179.15279.92437.37629.811119.661749.472519.243428.974478.655668.306997.9010077.01011.3117.6728.9545.2470.69119.46180.96282.74441.79636.171130.971767.152544.693463.614523.895725.557068.5810178.820253240506580100125150200250300350400闭式系统0.5-0.60.6-0.70.7-0.90.8-10.9-1.2 1.1-1.4 1.2-1.6 1.3-1.8 1.5-2.0 1.6-2.2 1.8-2.5 1.8-2.6 1.9-2.9 1.6-2.5 1.8-2.6开式系统0.4-0.50.5-0.60.6-0.80.7-0.90.8-1.00.9-1.2 1.1-1.4 1.2-1.6 1.4-1.8 1.5-2.01.6-2.31.7-2.41.7-2.41.6-2.11.8-2.350060040045030035020025012515080100管径单位：DN 流速单位：m/s 流量单位：m 3/h 圆周率（π）：3.1415926管 道 管 径 规 格 大 小（DN）5065管径/流速/流量对照表4 青岛奥特斯机电系统工程有限公司253240管径流速推荐安全值流速推荐值m/s:20管径(DN)。