水力計(jì)算參考

8.5.2管網(wǎng)水力計(jì)算根據(jù)水量預(yù)測(cè)的計(jì)算，按規(guī)模10000m3/d計(jì)算。日變化系數(shù)取1.3時(shí)變化系數(shù)連界鎮(zhèn)取1.4村莊取2.51、 計(jì)算簡(jiǎn)化原則在管網(wǎng)計(jì)算中，由于給水管線遍布在街道下，不但管線很多并且管徑差別很大，如果將全部管線一律加以計(jì)算，實(shí)際上沒(méi)有必要，甚至不太可能。因此，管網(wǎng)的水力計(jì)算往往將實(shí)際管線適當(dāng)加以簡(jiǎn)化，保留主要的干管，略去一些次要的、水力條件影響較小的管線。具體簡(jiǎn)化有以下2點(diǎn)：A、 對(duì)于同條道路布置多條管段或平行且靠近的管線采用復(fù)合管徑加以計(jì)算；B、 小范圍內(nèi)的多條管線交叉點(diǎn)簡(jiǎn)化為一個(gè)節(jié)點(diǎn)。2、 計(jì)算前的基本資料水源點(diǎn)確定：連界水廠重力供水水力計(jì)算時(shí)采用單水源進(jìn)行水力計(jì)算。最高時(shí)用水量的確定：根據(jù)用水量預(yù)測(cè)，計(jì)算得出遠(yuǎn)期最高日用水量為10000m3/d，秒流量為231.48L/s，時(shí)變化系數(shù)取1.4，則最高時(shí)用水量為324.07L/s?？刂泣c(diǎn)的確定：連界水廠清水池供水壓力為685.45m，結(jié)合規(guī)劃的水壓覆蓋范圍，確定控制點(diǎn)為水源點(diǎn)。各節(jié)點(diǎn)高程及各管段長(zhǎng)度由已知地形圖上獲取。3、 水力計(jì)算過(guò)程按支狀管網(wǎng)節(jié)點(diǎn)流量計(jì)算為管段流量。4、 平差公式水頭損失計(jì)算采用的是海曾-威廉公式：I10.67q1.852lh C1.852D4.87式中q 流量（m3/s）l 管道長(zhǎng)度（m）C——系數(shù)，塑料管系數(shù)C（海曾-威廉系數(shù)）取140，鑄鐵管取130D——管徑（m）計(jì)算結(jié)果詳附表。根據(jù)計(jì)算結(jié)果，千雞山水廠清水池重力供水能覆蓋100%用戶，無(wú)需二次加壓。

5、結(jié)算結(jié)果最不利點(diǎn)水力計(jì)算節(jié)點(diǎn)參數(shù)表節(jié)點(diǎn)編號(hào)流量(L/s)地面標(biāo)高(m)節(jié)點(diǎn)水壓(m)自由水頭(m)1-324.070685.450685.500水源212.483590.000684.44594.445313.443627.300677.26949.96949.406630.500670.10739.607521.943619.500667.92748.42765.063621.800679.11257.31277.204606.300680.67174.37187.250600.000678.66878.668912.779597.000673.88176.8811010.048618.000665.80747.8071137.518616.000664.46148.461122.375587.800681.93094.130131.272586.000682.80696.806140.595585.000683.11698.116152.186585.300683.37498.0741612.611602.000681.91179.911177.142588.000680.60992.6091810.888608.300678.21169.911194.778615.000674.18159.181202.871624.000671.57947.579213.778625.500670.89045.390224.445618.000670.17852.178236.814630.500668.99938.499248.479620.500666.16545.6652536.594617.000660.71543.715267.056621.500668.39546.895275.240609.500669.36459.864286.944618.500672.40853.908298.233625.900673.16247.2623012.708610.500677.29466.794314.052623.500673.53750.037327.183625.400674.70049.300335.134600.800677.00576.205348.398618.200673.31555.115352.411616.500674.22857.728363.052614.000676.16962.169376.933605.500670.67865.178384.761628.000670.63042.630

最不利點(diǎn)水力計(jì)算管道參數(shù)表管道編號(hào)管徑(mm)管長(zhǎng)(m)流量(L/s)流速(m/s)T米損失(m)管道損失(m)2-15355435.20094.6420.9562.4611900324.0701.3162.580150036.4401.1607.0187.1764-32001347.00031.3490.9985.3177.1625-4200788.40021.9430.6982.7652.1806-3160682.3008.3520.5432.7011.8437-6160467.10013.4150.6673.3381.5598-7315843.90067.5950.8672.374290060.3451.2295.9704.78710-92502099.20047.5660.9693.8468.07411-10200181.80037.5181.1947.4061.34712-7315324.40088.2141.1323.8801.25913-12315214.90090.5891.1624.0760.87614-1331574.00091.8611.1794.1820.31015-1431561.10092.4561.1864.2330.25916-2400558.400180.5051.4364.5372.53416-17400532.600129.4071.0302.4461.30317-184001088.700122.2650.9732.2022.39718-19200589.60035.9261.1446.8364.03118-33225459.90029.1770.7342.6231.20618-36225333.50046.2731.1646.1252.04319-20200495.10031.1480.9915.2552.60220-21200156.70028.2770.9004.3990.68921-38160417.8003.6780.2390.6210.25921-22200283.20020.8210.6632.5130.71222-23200726.10016.3760.5211.6241.17923-24160820.9009.5620.6213.4522.83424-26200333.30035.5111.1306.6912.23025-24200770.50036.5941.1657.0735.45026-37200527.40028.0330.8924.3292.28326-27200741.00014.5330.4631.3080.96927-28160448.50019.7730.9836.7873.04428-29200277.20021.7370.6922.7180.75329-302001112.90025.7790.8213.7134.13230-162501771.80038.4870.7842.6064.61831-29160479.0004.1900.2720.7830.37532-31160440.9008.2420.5352.6381.16332-34160484.3008.6170.5602.8591.385

33-32200705.50024.0430.7653.2682.30534-28160850.8004.9810.3241.0660.90735-34225188.00040.8101.0264.8570.91336-35225359.40043.2211.0875.3991.94037-34200383.30036.0491.1476.8792.63738-37160663.1001.0830.0700.0730.048消防校核節(jié)點(diǎn)參數(shù)表節(jié)點(diǎn)編號(hào)流量(L/s)地面標(biāo)高(m)節(jié)點(diǎn)水壓(m)自由水頭(m)1-374.070685.450685.500水源212.483590.000684.12194.121313.443627.300669.59142.29149.406630.500648.34517.845546.943619.500639.49719.99765.063621.800675.97854.17877.204606.300679.69873.39887.250600.000677.69577.695912.779597.000672.90875.9081010.048618.000664.83446.8341137.518616.000663.48747.487122.375587.800681.18193.381131.272586.000682.20996.209140.595585.000682.57197.571152.186585.300682.87497.5741612.611602.000680.89378.893177.142588.000679.19791.1971810.888608.300676.03167.731194.778615.000670.36455.364202.871624.000666.53442.534213.778625.500665.48339.983224.445618.000664.37146.371236.814630.500662.33031.830248.479620.500655.62335.1232561.594617.000641.26924.269267.056621.500660.60439.104275.240609.500662.63453.134286.944618.500668.06649.566298.233625.900669.28743.3873012.708610.500675.07164.571314.051623.500669.91346.413327.183625.400671.45546.055335.134600.800674.50773.707348.398618.200669.22251.022352.411616.500670.52154.021

363.052614.000673.23359.233376.933605.500664.99759.497384.761628.000665.00637.006消防校核計(jì)算管道參數(shù)表管道編號(hào)管徑(mm)管長(zhǎng)(m)流量(L/s)流速(m/s)T米損失(m)管道損失(m)2-15355435.200102.7961.0392.8671.2482-1560408.900374.0691.5193.3721.3793-22001022.50053.2861.69614.21014.5304-32001347.00056.3491.79415.77321.2465-4200788.40046.9431.49411.2228.8486-3160682.30016.5061.0729.3616.3877-6160467.10021.5691.0737.9643.7208-7315843.90067.5950.8672.374290060.3451.2295.9704.78710-92502099.20047.5660.9693.8468.07411-10200181.80037.5181.1947.4061.34712-7315324.40096.3681.2374.5711.48313-12315214.90098.7431.2674.7821.02814-1331574.000100.0151.2834.8970.36215-1431561.100100.6101.2914.9510.30316-2400558.400205.5041.6355.7803.22816-17400532.600149.2241.1873.1851.69617-184001088.700142.0821.1312.9083.16618-19200589.60043.1901.3759.6135.66818-33225459.90033.1570.8343.3151.52518-36225333.50054.8471.3798.3922.79919-20200495.10038.4121.2237.7363.83020-21200156.70035.5411.1316.7021.05021-38160417.8005.1760.3361.1420.47721-22200283.20026.5870.8463.9291.11322-23200726.10022.1420.7052.8112.04123-24160820.90015.3280.9968.1696.70624-26200333.30054.7451.74314.9454.98125-24200770.50061.5941.96118.63014.35526-3