給水管網(wǎng)課程設(shè)計(jì)某城市居住區(qū)給水管網(wǎng)設(shè)計(jì)

1、2011至2012學(xué)年第一學(xué)期給水排水管道系統(tǒng)課程設(shè)計(jì) 給水管網(wǎng) 設(shè)計(jì)題目 某城市居住區(qū)給水管網(wǎng)設(shè)計(jì) 學(xué) 院 專業(yè)班級(jí) 姓 名 學(xué) 號(hào) 完成日期 指導(dǎo)教師 一、水源的選擇 根據(jù)該城市的平面圖，河流在城市的南面，按河流的流經(jīng)方向，選擇取水構(gòu)筑物和水廠在城市的東南方向，即河流上游，采用統(tǒng)一給水系統(tǒng)。二、總設(shè)計(jì)用水量計(jì)算 1、綜合生活用水 城市人口 城市規(guī)劃人口數(shù)為29000人 城市最高日用水量 城市規(guī)劃人口數(shù)為29000人，屬于中、小城市，城市位于一區(qū)，查表得城市最高日綜合生活用水定額為220370l/cap.d 根據(jù)實(shí)際計(jì)算的方便性及城市最大容量性綜合取最高綜合生活用水定額為350 l/cap.

2、d城市最高日綜合生活用水總量為q1=10150m3/d2、工業(yè)企業(yè)生產(chǎn)用水和工作人員生活用水（均勻用水） 工業(yè)企業(yè)的生產(chǎn)用水量企業(yè)1企業(yè)2企業(yè)3企業(yè)4生產(chǎn)用水量（m3/d）1000800600500生產(chǎn)總用水量（m3/d）2900由上表可知 q2=2900m3/d工業(yè)企業(yè)職工的生活和淋浴的用水量 職工生活用水量定額：一般車間25l/(cap.班)，熱車間35 l/(cap.班) 職工淋浴用水量定額：一般車間40l/(cap.班)，熱車間60 l/(cap.班) 職工生活用水量=（一般車間職工人數(shù)*25+熱車間職工人數(shù)*35）/1000 職工淋浴用水量=（一般車間淋浴職工人數(shù)*40+熱車間淋浴職

3、工人數(shù)*60）/1000企業(yè)職工的生活和淋浴用水量計(jì)算表職工生活用水職工淋浴用水生活和淋浴用水量企業(yè)名稱班數(shù)每班人數(shù)每班職工人數(shù)每班淋浴職工人數(shù)生活用水量m3淋浴用水量m3小計(jì)m3一般車間熱車間一般車間熱車間企業(yè)121801265454455.0404.86019.800企業(yè)211651323350334.4553.9808.435企業(yè)311601362456164.2403.2007.440企業(yè)411601283248244.3203.3607.680合計(jì)用水量43.355由上表得q3=43.355m3/d3、澆灑道路和綠地用水 澆灑道路和綠化（9:0010:00 ， 14:0015:00）

4、， 每次用水量30m3/次 澆灑道路和綠地用水總量 q4=60m3/d 4、管道漏水失水量 配水管道漏失水量按綜合生活用水，工業(yè)企業(yè)用水，澆灑道路和綠地用水的總水量之和的10%12%計(jì)算，這里按11%來計(jì)算：q5=（q1+q2+q3+q4）*11%=（10150+2900+43.355+60）*11%=1446.87m3/d5、未預(yù)見用水 未預(yù)見水量按用水量總和的8%12%計(jì)算，這里按10%計(jì)算：q6=（q1+q2+q3+q4+q5）*10%=（10150+2900+43.355+60+1446.87）*10%=1460.027m3/d6、消防用水 城市規(guī)劃人口數(shù)為29000，小于5萬人，查表

5、可得，消防用水量定額為25l/s，同一時(shí)間內(nèi)的火災(zāi)次數(shù)為2次，則q7=50l/s時(shí)間居民生活用水企業(yè)生產(chǎn)用水量m3生活和淋浴用水量m3綠化和道路用水量m3漏水量m3未預(yù)見水量m3總計(jì)m3總用水量百分?jǐn)?shù)%時(shí)用水量百分?jǐn)?shù)用水量m3011.70172.550.004.8600.0060.28660.834298.5301.859121.67169.510.000.0000.0060.28660.834290.6251.810231.63165.450.000.0000.0060.28660.834286.5651.784341.63165.450.000.0000.0060.28660.834286

6、.5651.784452.56259.840.000.0000.0060.28660.834380.9602.372564.35441.530.000.0000.0060.28660.834562.6453.503675.14521.710.000.0000.0060.28660.834642.8304.003785.64572.460.000.0000.0060.28660.834693.5804.319896.00609.00300.002.2570.0060.28660.8341032.3776.4289105.84592.76300.002.25730.0060.28660.83410

7、46.1376.51410115.07514.61300.002.2570.0060.28660.834937.9825.84011125.15522.73300.002.2570.0060.28660.834946.1025.89112135.15522.73300.002.2570.0060.28660.834946.1025.89113145.15522.73300.002.2570.0060.28660.834746.1025.89114155.27534.91300.002.25730.0060.28660.834988.2826.15415165.52560.28300.002.2

8、560.0060.28660.834983.6566.12516175.75583.6362.5016.0300.0060.28660.834783.2754.87717185.83591.7562.500.6300.0060.28660.834775.9954.83218195.62570.4362.500.6300.0060.28760.834754.6814.69919205.00507.5062.500.6300.0060.28760.834691.7514.30720213.19323.7962.500.6300.0060.28760.835508.0373.16321222.692

9、73.0462.500.6300.0060.28760.835457.2872.84722232.58261.8762.500.6300.0060.28760.835446.1222.77823241.87189.8162.500.6300.0060.28760.835374.0572.329合計(jì)100.0010150.002900.0043.35560.001446.8701460.02016060.25100根據(jù)水量計(jì)算表可得：最高日最高時(shí)用水量為qh=1046.137 m3/h=290.59l/s三、管網(wǎng)布置假定用水量均勻地分布在全部干管上管道總水量： q=1046.137 m3/h=2

10、90.59 l/s大用戶集中用水量：q=300.00+2.257=302.257 m3/h=83.96 l/s各管段長度（m）l1-2l2-3l3-4l4-5l5-6l6-1l3-6計(jì)算長度590516535603612423.5561物理長度590516572603612587561總計(jì)算長度： l=3840.5m比流量： qs= =（290.59-83.96）/3840.5 =0.054l/（s.m）沿線流量管段管段長度（m）沿線流量1259031.8602351627.8643453528.8904560332.5625661233.04861423.522.8693656130.294

11、總計(jì)3840.5207.387城市管網(wǎng)中，工業(yè)企業(yè)等大用戶所需流量，可直接作為接入大用戶節(jié)點(diǎn)的節(jié)點(diǎn)流量：節(jié)點(diǎn)生產(chǎn)用水量(l/s)生活和淋浴用水量(l/s)總計(jì)(l/s)企業(yè)117.3610.17517.536企業(yè)227.7780.15527.932企業(yè)320.8330.14720.981企業(yè)417.3610.15017.511各節(jié)點(diǎn)流量節(jié)點(diǎn)節(jié)點(diǎn)流量（l/s）11/2(31.860+22.869)=27.40521/2(31.860+27.864)+17.536=47.43831/2(27.864+28.890+30.294)=43.56441/2(28.890+32.562)+17.511=4

12、7.27751/2(32.562+33.048)+20.981=53.82861/2(33.048+30.294+22.869)+27.932=71.078總計(jì)290.590管網(wǎng)內(nèi)最高日最高時(shí)流量為290.59l/s各管段內(nèi)的初分流量（l/s）12233445566136管段流量q125.33077.89241.8595.41859.246137.8557.531環(huán)狀網(wǎng)計(jì)算（最高用水時(shí)）環(huán)號(hào)管段管長（m）管徑（mm）初步分配流量第一次校正q(l/s)1000ih(m)|sq |q(l/s)1000ih(m)|sq |12590450-125.3302.008-1.1850.009-125.89

13、82.027-1.1960.00923516350-77.8922.931-1.5030.019-78.4602.955-1.5250.019365611507.5312.8251.5850.2107.5322.8251.5850.21061587450137.8552.3621.3860.010137.2872.3421.3750.0100.2830.2490.2390.249q= -0.283/（2*0.249）= -0.56834572300-41.8592.029-1.1610.028-42.4282.085-1.1930.028456031505.4181.5720.9480.175

14、4.8491.2600.7590.1575661230059.2463.7782.3120.03958.6773.7062.2680.03963561150-7.5312.825-1.5850.210-7.5322.825-1.5850.2100.5150.4520.2500.434q= -0.515/（2*0.452）= -0.569經(jīng)計(jì)算，各環(huán)閉合差均小于0.5m，大環(huán)1234561的閉合差為0.489.小于允許值，可以滿足要求，計(jì)算到此完畢。控制點(diǎn)在節(jié)點(diǎn)4。最高時(shí)各節(jié)點(diǎn)自由水頭節(jié)點(diǎn)123456地勢(shì)（m）345.68352.56352.62351.81344.99346.44自由水頭(m)

15、38.04429.96828.3832835.57936.397節(jié)點(diǎn)水壓（m）383.724382.528381.003379.81380.569392.837故選擇揚(yáng)程為40m的水泵作為給水泵。四、事故校核 假定16管段發(fā)生事故： q事故 = q*70% =203.4 1l/s 即事故時(shí)最高日最高時(shí)的流量為203.41l/s 發(fā)生事故時(shí)，管段不符合要求，應(yīng)適當(dāng)放大個(gè)別管段的直徑，這里增加36管徑，更改為dn=300mm。各節(jié)點(diǎn)流量（l/s）節(jié)點(diǎn)節(jié)點(diǎn)流量（l/s）119.19233.21330.49433.09537.68649.75總計(jì)203.41各管段內(nèi)的初分流量（l/s）12233445

16、566136管段流量q184.22151.0145.7712.6825074.75環(huán)狀網(wǎng)計(jì)算（事故時(shí)）環(huán)號(hào)管段管長（m）管徑（mm）初步分配流量第一次校正q(l/s)1000ih(m)|sq |q(l/s)1000ih(m)|sq |34572300-45.772.147-1.2280.027-43.6981.957-1.1200.02645603150-12.686.729-4.0570.320-10.6084.709-2.8400.26856612300250.6410.3920.01627.0720.7510.4600.0176356130074.755.7273.2130.04376.

17、8226.0493.3940.044-1.6810.405-0.1060.354q= 1.681/（2*0.405）=2.072事故時(shí)，控制點(diǎn)在節(jié)點(diǎn)4事故時(shí)各節(jié)點(diǎn)自由水頭節(jié)點(diǎn)123456地勢(shì)（m）345.68352.56352.62351.81344.99346.44自由水頭(m)43.3334.1728.312837.6636.67節(jié)點(diǎn)水壓（m）389.01386.73380.93379.81382.65383.11故選擇揚(yáng)程為45m的水泵作為給水泵。五、消防校核根據(jù)城鎮(zhèn)、居民區(qū)室外的消防用水量表得，城市規(guī)劃人口數(shù)為2.9萬人時(shí)，同一時(shí)間內(nèi)的火災(zāi)數(shù)為兩次，一次滅火用水量為25l/s。從經(jīng)濟(jì)和

18、安全等方面考慮，將消防流量一處放在控制點(diǎn)，即節(jié)點(diǎn)4另一處放在離水廠較遠(yuǎn)處或靠近大用戶和工業(yè)企業(yè)的節(jié)點(diǎn)處，即節(jié)點(diǎn)5消防時(shí)最高日最高時(shí)流量為340.59l/s 各節(jié)點(diǎn)流量（l/s）節(jié)點(diǎn)節(jié)點(diǎn)流量（l/s）127.405247.438343.564472.277578.828671.078總計(jì)340.59各管段內(nèi)的初分流量（l/s）12233445566136管段流量q148100.56266.9985.27984.107165.18510環(huán)狀網(wǎng)計(jì)算（消防用水時(shí)）環(huán)號(hào)管段管長（m）管徑（mm）初步分配流量第一次校正q(l/s)1000ih(m)|sq |q(l/s)1000ih(m)|sq |1259

19、0450-1482.709-1.5980.011-148.9412.744-1.6190.01123516350-100.5624.672-2.4110.024-101.5034.759-2.4560.02436561150104.7082.6410.2649.0273.8362.1520.23861587450165.1853.3261.9520.012164.2443.2881.9300.0120.5850.3110.0080.285q= -0.585/（2*0.311）= -0.94134572300-66.9984.762-2.7240.041-66.9654.757-2.7210.0

20、41456031505.2791.4810.8930.1695.3121.5000.9040.1705661230084.1077.2514.4380.05384.147.2574.4410.05363561150-104.708-2.6410.264-9.0273.836-2.1520.238-0.0340.5270.4720.502q= 0.034/（2*0.527）= 0.033經(jīng)計(jì)算，各環(huán)閉合差均小于0.5m，大環(huán)1234561的閉合差為0.48。小于允許值，可以滿足要求，計(jì)算到此完畢?？刂泣c(diǎn)在節(jié)點(diǎn)4。消防時(shí)，應(yīng)保證每個(gè)節(jié)點(diǎn)的自由水頭大于10m水柱。消防時(shí)各節(jié)點(diǎn)自由水頭節(jié)點(diǎn)123456

21、地勢(shì)（m）345.68352.56352.62351.81344.99346.44自由水頭(m)22.92614.42711.9111017.72420.715節(jié)點(diǎn)水壓（m）368.606366.987364.531361.81362.714367.155故選擇揚(yáng)程為25m的水泵作為給水泵。綜上考慮，選擇揚(yáng)程為45m的水泵作為給水泵。 q= 47.438q= 43.564382.52829.968352.56q= 47.277572-300516-350442.428-1.193378.4601.5252379.8128351.81381.00328.383352.62590-450603-150 561-150125.8981.1964.8490.759 7.532-1.585q = 27.405q= 53.8286q= 71.078587-4501612-300137.2871.375392.83736.397346.44383.72438.044345.68558.677-2.268380.56