《给水管网的设计案例》6100字

给水管网的设计案例综述1.1给水管网计算1.1.1总用水量概括城市总用水量包括：居民综合生活用水量、工业生产用水量、浇洒道路用水量和绿化用水量、管网漏损水量、未预见用水量、和消防用水量。给水厂出水水质需要满足《生活饮用水卫生标准》（GB5749-2006）要求。1.1.2最高日综合生活用水量（1-1）其中：q表示居民综合生活用水定额，N代表居民人数，f代表自来水普及率。根据《室外给水设计规范》（GB50011-2006），金华市S县城区的供水标准为220L/人•天；N表示人口数，为30w人；f表示自来水普及率，查阅S县自来水普及相关资料取为95%；1.1.3工业生产用水量S县主要的工业区是百花山工业区，走访工业区调研得出全区日用水量为20000m3/d左右，所以Q2=20000m3/d（1-2）1.1.4浇洒道路用水量和绿化用水量根据《室外给水设计规范》（GB50011-2006）的规定，浇洒道路和绿化用水可按最高日综合生活用水量和工业生产用水量之和的30%～50%，这里取35%。所以=24810（1-3）1.1.5管网漏失水量管网漏失水量应该按照1.1.1～1.1.4几项之和的10%～12%计算，这里取10%。所以（1-4）1.1.6未预见用水量未预见用水量应根据难以预测的因素综合来确定，可以采用1.1.1～1.1.5之和的8%～12%确定，这里取10%。所以（1-5）1.1.7给水厂的设计水量最高日用水量为：（1-6）本设计水量约为136591m3/d。1.1.8消防用水量根据《建筑设计防火规范》(GB50016)及《高层民用建筑设计防火规范》(GB50045)等设计防火规范，S县的城市消防用水量为55L/S，次数为2次。最高日用水量不纳入消防用水量，因为火灾的发生是偶然的，所以灭火的消防用水也会比较少。1.1.9最高时用水量的计算根据《室外给水设计规范》(GB50011-2006)的规定，城镇供水的时变化系数、日变化系数应根据城镇性质和规模、国民经济和社会发展、供水系统布局，结合现状供水曲线和日用水变化分析确定。在缺乏实际用水资料情况下，最高日城市综合用水的时变化系数宜采用1.2～1.6；日变化系数宜采用1.1～1.5。这里采取1.3。（1-7）1.2给水管网的设计1.2.1给水工程的确定给水管道的输水方式有重力式输水，加压式输水或是结合并用。这里采用加压式输水方式，采用管道。1.3设计用水量管网设计用水量采用最高日最高时用水量：Qh=2055.28L/s （1-8）1.4管网平差1.4.1平差依据和结果表1-1平差计算依据和结果平差计算依据和结果平差类型反算水源压力2、计算公式海曾威廉公式V=0.44*C*(Re/C)^0.075*(g*D*I)^0.5Re=V*D/ν计算温度：13℃ν=0.0000013、局部损失系数：1.204、水源点水泵参数:无参数5、管网平差结果特征参数水源点编号节点流量(L/s)节点压力(m)JD1-2055.280109.726最大管径(mm):1600.00最小管径(mm):200.00最大流速(m/s):1.150最小流速(m/s):0.035水压最低点JD26压力(m):68.76自由水头最低点JD26自由水头(m):28.001.4.2平差计算节点参数表1-2平差计算节点参数平差计算节点参数节点编号流量(L/s)地面标高(m)节点水压(m)自由水头(m)JD1-2055.28071.510109.72676.216JD22.93571.930109.64975.719JD311.36771.590109.54177.951JD46.81774.830109.30074.470JD5241.04175.230108.65971.429JD614.92876.490107.48170.991JD716.79778.210106.07067.860JD825.14474.270104.73470.464JD916.71266.160102.67766.517JD1016.78866.860100.76561.905JD1125.22067.29098.99261.702JD1216.76369.54096.89057.350JD1316.45867.63094.99957.369JD1416.45869.68091.36551.685JD1525.06870.32091.85751.537JD1616.64471.85089.70647.856JD1716.71270.21087.89247.682JD1819.28869.53086.36546.835JD198.44968.22085.57447.354JD2014.32269.42081.95944.539JD2116.50970.65080.73340.083JD2216.54371.58078.61037.030JD2316.80572.36075.80031.440JD2411.98071.98072.36630.386JD2511.95571.25069.56228.312JD2616.80570.76068.76028.000JD2716.71269.68069.22529.545JD2816.69568.20071.45735.257JD2922.17669.72077.42637.706JD3016.47570.86076.14535.285JD3116.83071.69076.28834.598JD3216.74672.68079.57336.893JD3317.11371.59082.94541.355JD3416.85672.87078.72335.853JD3514.07371.16078.30837.148JD3610.14672.67078.63435.964JD3710.13470.63079.92839.298JD3812.24271.48079.79438.314JD3916.76370.26080.20139.941JD4012.42269.11081.64742.537JD4111.69370.83081.14442.314JD4212.87571.46081.67742.217JD4320.93572.65086.26441.614JD4416.83974.36086.52942.169JD4516.84775.53088.30542.775JD4610.99576.28092.74146.461JD4710.91974.16091.59349.433JD4816.58571.85097.46655.616JD4916.65370.260100.25759.997JD5025.06071.470102.39960.929JD5116.53469.880101.99164.111JD5216.71267.350105.65868.308JD5325.31364.810106.72371.913JD5416.78862.190108.12775.937JD5516.83976.750104.96068.210JD5616.43878.530101.29864.768JD5731.15070.290101.80861.518JD5816.84771.630100.70859.078JD5916.78071.560100.98757.427JD6016.42476.25099.91451.664JD6112.34177.68098.21850.538JD6221.02778.24097.37949.139JD6324.97577.19095.24348.053JD6416.48475.38095.53550.155JD6516.77176.61096.62650.016JD6616.89074.35091.20548.855JD6716.77177.53091.37841.848JD6810.36275.24089.77044.530JD6925.82271.86089.40645.546JD7015.45271.54088.01546.475JD7116.78871.20088.03246.832JD7216.72972.73088.90846.178JD7316.71271.68087.30641.626JD7411.68275.38085.53340.153JD7527.15174.16084.91340.753JD7615.45276.29082.62836.338JD7716.85674.38082.52138.141JD7816.79772.94084.04841.108JD7916.76372.72082.42739.707JD8014.00671.35079.09237.742JD8116.80575.83084.03238.202JD8216.81476.98084.43837.458JD8321.39674.36088.58444.224JD8416.73771.58086.23944.659JD858.74070.20081.05442.854JD8611.09172.85089.32546.475JD8730.47770.26090.88050.620JD8816.83968.63088.32349.693JD8916.81470.25084.94644.696JD9010.11772.15080.48638.336JD9111.61372.69092.11549.425JD9216.83971.48091.32649.846JD9326.63674.62094.66850.048JD9416.87371.86092.30350.443JD9516.82270.23089.26249.032JD9611.65071.09085.42044.330JD978.73172.80094.85252.052JD9815.79071.74095.88152.141JD9932.01875.29097.14251.852JD10016.62771.60091.75950.159JD10116.67071.87091.49649.626JD10212.56269.58088.49148.911JD10315.01071.63098.57356.943JD10416.66172.980100.41857.438JD10516.87372.85098.01855.168JD10616.81471.960100.07058.110JD10716.80572.07094.73452.664JD10816.80570.66095.93455.274JD10914.95371.77086.20344.433JD11014.93671.87085.54141.671JD11116.81471.36085.77844.4181.4.3平差计算管段参数表1-3平差计算管段参数平差计算管道参数管道编号管径(mm)管长(m)流量(L/s)流速(m/s)千米损失(m)管道损失(m)JD1-JD21600102.0002055.2800.9850.7580.077JD2-JD31600141.0002052.3450.9840.7560.108JD1-JD41000217.005739.9350.9041.1070.240JD1-JD541200984.0001301.0431.1501.4371.414JD4-JD51000589.000731.1180.8951.0880.641JD5-JD6800778.000490.0770.9331.5141.178JD6-JD7800987.000475.1490.9041.4301.411JD7-JD8800999.000458.3520.8721.3381.336JD8-JD9700986.000410.9881.0212.0862.056JD8-JD59200988.00022.2210.6541.7921.747JD9-JD10700990.000394.2760.9791.9311.912JD10-JD11700995.000377.4880.9381.7821.773JD11-JD12600991.000302.7310.9562.1212.102JD11-JD65300996.00049.5360.6522.3752.366JD12-JD13600991.000285.9680.9031.9091.891JD11-JD14600955.000269.5100.8511.7101.633JD14-JD15600991.000251.0520.7991.5221.509JD15-JD16500986.000191.2770.8692.1812.151JD15-JD72250987.00034.7080.6592.9872.948JD16-JD17500982.000176.6330.7951.8471.813JD17-JD18500994.000159.9210.7191.5371.527JD18-JD19400296.583110.2160.8272.6660.791JD18-JD78250990.00030.4170.5772.3402.317JD19-JD20400702.417101.7670.7632.3001.616JD20-JD21350991.00087.4450.8501.2541.225JD21-JD22350961.00070.9360.6892.2102.124JD22-JD23300995.00054.3930.7162.8242.810JD21-JD24250992.00037.5880.7131.4621.434JD24-JD25200661.00021.6080.6954.2422.804JD25-JD26200989.0009.6530.2840.8110.802JD26-JD27200998.0007.1520.2100.4660.465JD27-JD28200978.00021.8640.7024.3274.232JD28-JD29250996.00040.5590.7701.9851.969JD29-JD30200951.00012.6870.3731.3451.281JD29-JD80350671.03775.4220.7332.4751.666JD30-JD31200995.0001.7880.1110.1440.143JD31-JD32200995.00020.6180.6071.3021.285JD32-JD33250985.00037.3640.7091.4241.373JD31-JD34200997.00021.5890.6944.2364.223JD31-JD8535041.36178.0660.7582.6380.109JD34-JD35200996.0006.7330.1980.4160.415JD35-JD36200668.0007.3400.2160.4890.326JD36-JD37200531.58617.4860.5152.4341.294JD37-JD38200461.4145.5300.1630.2890.134JD37-JD90250201.23131.1500.6292.7440.558JD38-JD39200984.0006.7120.1980.4140.407JD39-JD40250998.00021.4750.4461.4491.446JD40-JD41250470.70535.8970.6811.1791.497JD41-JD42250527.29519.3220.3671.0110.533JD41-JD96200384.50328.2670.8325.9192.276JD42-JD43250995.00032.1970.6112.6002.587JD41-JD44250994.0009.4070.1790.2670.265JD41-JD102250486.29841.7250.8304.5802.227JD44-JD45250997.00026.2460.4981.7811.776JD45-JD46250995.00041.0930.8184.4584.436JD46-JD47300305.00054.0880.7122.7950.852JD47-JD48300986.00065.0070.8561.9271.872JD48-JD49350975.00081.5920.7932.8632.791JD49-JD50400994.00098.2450.7372.1552.142JD50-JD51900976.000692.2131.0441.6311.591JD50-JD104800991.000568.9071.0831.9951.981JD51-JD52900979.000708.7471.0681.7031.668JD52-JD531000997.000725.4590.8861.0671.064JD51-JD5412001001.0001284.2551.1361.4031.404JD51-JD55800995.000531.4831.0151.7711.763JD55-JD56800996.000516.6440.9831.6691.663JD56-JD57800947.573500.2060.9521.5721.490JD57-JD58200996.00011.4060.3361.1041.100JD57-JD60700986.000391.0180.9761.9201.893JD57-JD106350990.00062.6320.6091.7551.738JD58-JD59200996.0005.4410.1600.2810.280JD60-JD61700956.000376.5940.9351.7741.696JD61-JD62700501.233364.2530.9051.6680.840JD62-JD63600992.000305.1750.9642.1532.135JD62-JD108300991.00038.0510.5011.4581.445JD61-JD64300962.00016.2810.2140.3030.292JD61-JD66600999.000296.4810.9362.0402.038JD64-JD65300987.00032.7650.4311.1061.091JD66-JD67600998.000279.5910.8831.8311.827JD67-JD68600985.000262.8200.8301.6331.608JD68-JD69600240.140252.4580.7971.5160.364JD69-JD70200831.00014.2610.4201.6701.391JD69-JD73500988.000190.5860.8572.1262.100JD69-JD111200992.00021.7890.6411.6571.628JD70-JD71200994.0001.1910.0350.0170.017JD71-JD72250991.00017.9790.3410.8850.877JD71-JD74500988.000171.8740.7821.7941.772JD74-JD75500391.282162.1920.7301.5770.620JD75-JD76200830.00018.6880.5502.7532.285JD75-JD79400999.000106.1910.7972.4892.486JD75-JD81200988.00010.1610.2990.8920.881JD76-JD77200997.0001.2360.0950.1070.107JD77-JD78200996.00011.6200.4011.5331.527JD79-JD80350981.00089.4280.8691.3921.335JD81-JD82200999.0006.6440.1960.4060.406JD82-JD83200989.00021.4580.6904.1924.146JD81-JD84400987.000101.5430.7772.3752.344JD81-JD86500551.867148.3970.6681.3380.741JD84-JD85350992.00086.8060.8431.2101.185JD86-JD87500994.000161.4880.7261.5651.555JD87-JD88350996.00076.9200.7472.5672.557JD87-JD91600615.539291.7990.9282.0061.235JD87-JD109200998.00024.9140.7334.6864.677JD88-JD89300995.00060.0810.7911.3941.377JD89-JD90250991.00041.2670.8214.4914.460JD91-JD92700994.000307.4120.7631.2191.212JD92-JD93700997.000324.2510.8051.3451.341JD91-JD94350999.00071.6120.7152.3672.364JD91-JD97800162.377420.0590.7991.1380.185JD91-JD107250991.0004.4410.0840.0670.066JD94-JD95300996.00056.7390.7471.0531.041JD95-JD96250991.00039.9170.7581.8691.842JD97-JD98800870.000428.7900.8161.1821.029JD98-JD99800997.000444.5800.8461.2641.260JD99-JD100350994.00089.5840.8701.4031.383JD99-JD103800797.778537.2361.0221.7951.432JD99-JD105300997.00028.9450.3810.8790.876JD100-JD101350972.00072.9570.7092.3282.263JD101-JD102300999.00056.2870.7411.0091.006JD101-JD104800977.000552.2461.0511.8881.845JD105-JD106300998.00045.8180.6032.0562.052JD107-JD108250996.00021.2460.4031.2051.200JD109-JD110200770.0009.9610.2930.8600.662JD110-JD111200996.0004.9750.1460.2380.2371.5管网校核1.5.1消防工况校核给水管网的设计流量未计入消防流量，当火灾发生在最高最高时时，消防流量比较大，管网以保证灭火用水为主。为了安全起见，按最高时用水量加上消防流量的工况进行消防校核。1.富阳区人口小于30万人，查城镇、居民区室外消防用水量表知同一时间火灾次数为2次，一次灭火用水量为55L/s。2.火灾流量全部由二级泵站供给。表1-4平差计算依据和结果平差计算依据和结果平差类型消防校核2、计算公式海曾威廉公式V=0.44*C*(Re/C)^0.075*(g*D*I)^0.5Re=V*D/ν计算温度：13℃ν=0.0000013、局部损失系数：1.204、水源点水泵参数:无参数5、管网平差结果特征参数水源点编号节点流量(L/s)节点压力(m)JD1-2165.280109.726最大管径(mm):1600.00最小管径(mm):200.00最大流速(m/s):2.114最小流速(m/s):0.024水压最低点JD24压力(m):12.41自由水头最低点JD24自由水头(m):-29.57表1-5平差计算节点参数表平差计算节点参数节点编号流量(L/s)地面标高(m)节点水压(m)自由水头(m)JD1-2165.28061.510109.72676.216JD22.93561.930109.64175.711JD311.36761.590109.52277.932JD46.81764.830109.24674.416JD5241.04165.230108.51071.280JD614.92866.490107.06870.578JD716.79768.210105.32967.119JD825.14464.270101.67069.400JD916.71266.160101.05364.893JD1016.78866.86098.59761.737JD1125.22067.29096.29559.005JD1216.76369.54091.34851.808JD1316.45867.63090.64851.018JD1416.45869.68088.26948.589JD1525.06870.32086.02445.704JD1616.64471.85082.32340.473JD1716.71270.21079.06438.854JD1819.28869.53076.17336.643JD198.44968.22074.13235.912JD2014.32269.42069.70030.280JD2116.50970.65059.69719.047JD2216.54371.58051.75310.173JD2316.80572.36038.030-4.330JD24121.98071.98012.407-29.573JD2511.95571.25011.284-27.966JD2616.80570.76018.497-22.263JD2716.71269.68031.529-8.151JD2816.69568.20054.87516.675JD2922.17669.72067.79528.075JD3016.47570.86067.65926.799JD3116.83071.69068.99927.309JD3216.74642.68075.38332.703JD3317.11371.59080.39338.803JD3416.85672.87076.67931.809JD3514.07371.16076.42735.267JD3610.14672.67076.89534.225JD3710.13470.63078.41537.785JD3812.24271.48078.32836.848JD3916.76370.26078.87838.618JD4012.42269.11080.46141.351JD4111.69370.83082.04941.219JD4212.87571.46082.63441.174JD4320.93572.65085.36942.719JD4416.83974.36085.67241.312JD4516.84775.53087.53742.007JD4610.99576.28092.10745.827JD4710.91974.16092.98048.820JD4816.58571.85096.92955.079JD4916.65370.26099.76559.505JD5025.06071.470101.93660.466JD5116.53469.880101.61261.732JD5216.71267.350105.36768.017JD5325.31364.810106.48571.675JD5416.78862.190107.99975.809JD5516.83966.750104.51367.763JD5616.43868.530102.64664.116JD5731.15070.290100.96660.676JD5816.84771.63099.79758.167JD5916.78071.560100.04256.482JD6016.42476.25098.76652.516JD6112.34177.68096.78249.102JD6221.02778.24095.79547.555JD6324.97577.19091.16445.974JD6416.48475.38091.34947.969JD6516.77176.61094.23347.623JD6616.89074.35090.68846.338JD6716.77177.53088.44340.913JD6810.36275.24086.44341.203JD6925.82271.86085.98642.126JD7015.45271.54081.52341.983JD7116.78871.20081.36742.167JD7216.72972.73081.83541.105JD7316.71271.68081.23139.551JD7411.68275.38080.84935.469JD7527.15174.16079.99935.839JD7615.45276.29075.60329.313JD7716.85674.38074.54430.164JD7816.79772.94074.84831.908JD7916.76372.72076.20331.483JD8014.00671.35070.74529.395JD8116.80575.83079.75631.926JD8216.81476.98080.91931.939JD8321.39674.36086.88242.522JD8416.73771.58084.22142.641JD858.74070.20080.52140.321JD8611.09172.85087.74144.891JD8730.47770.26089.52549.265JD8816.83968.63086.94348.313JD8916.81470.25081.52341.273JD9010.11772.15078.98536.835JD9111.61372.69090.88148.191JD9216.83971.48092.20648.726JD9326.63674.62091.66649.046JD9416.87371.86091.29049.430JD9516.82270.23088.23048.000JD9611.65071.09084.35441.264JD978.73172.80091.86651.066JD9815.79071.74094.97951.239JD9932.01875.29096.33951.049JD10016.62771.60092.93649.336JD10116.67071.87090.65748.787JD10212.56269.58087.62348.043JD10315.01071.63097.86656.236JD10416.66172.98099.83056.850JD10516.87372.85097.20454.354JD10616.81471.96099.23957.279JD10716.80572.07091.67351.603JD10816.80570.66094.56451.904JD10914.95371.77081.98042.210JD11014.93671.87082.99339.123JD11116.81471.36081.06441.704表1-6平差计算管段参数表平差计算管道参数管道编号管径(mm)管长(m)流量(L/s)流速(m/s)千米损失(m)管道损失(m)JD1-JD21600102.0002165.2801.0380.8350.085JD2-JD31600141.0002162.3451.0360.8330.119JD1-JD41000217.005796.7150.9731.2690.275JD1-JD541200984.0001354.2631.1971.5471.523JD4-JD51000589.000789.8980.9651.2490.736JD5-JD6800778.000546.8571.0411.8541.443JD6-JD7800987.000531.9291.0121.7621.739JD7-JD8800999.000515.1320.9801.6601.659JD8-JD9700986.000468.1491.1632.6542.617JD8-JD59200988.00021.8390.6431.6731.628JD9-JD10700990.000451.4371.1212.4812.456JD10-JD11700995.000434.6491.0802.3132.302JD11-JD12600991.000361.4321.1482.9742.947JD11-JD65300996.00045.9970.6062.0712.063JD12-JD13600991.000346.6691.0952.7252.701JD11-JD14600955.000330.2111.0432.4912.379JD14-JD15600991.000311.7530.9912.2662.245JD15-JD16500986.000259.1431.1661.7531.700JD15-JD72250987.00029.5420.5612.2172.188JD16-JD17500982.000242.4991.0911.3191.259JD17-JD18500994.000225.7871.0162.9082.891JD18-JD19400296.583184.0131.3806.8822.041JD18-JD78250990.00022.4860.4271.3381.325JD19-JD20400702.417175.5641.3176.3094.431JD20-JD21350991.000161.2421.56710.09510.004JD21-JD22350961.000144.7331.4068.2667.944JD22-JD23300995.000128.1901.68711.79211.723JD21-JD24250992.000111.3852.11425.83025.623JD24-JD25200661.00012.5950.3711.3270.877JD25-JD26200989.00026.5500.7815.2715.213JD26-JD27200998.00041.3551.27611.05911.033JD27-JD28200978.00060.0671.76821.87021.345JD28-JD29250996.00076.7621.45712.97212.920JD29-JD30200951.0001.7770.1110.1430.136JD29-JD80350671.037102.7150.9984.3832.950JD30-JD31200995.00012.6980.3741.3471.340JD31-JD32200995.00029.5280.8696.4176.385JD32-JD33250985.00046.2740.8785.0865.009JD31-JD34200997.00022.0050.6481.7241.713JD31-JD8535041.36185.3910.8301.1140.129JD34-JD35200996.0005.1490.1520.2540.253JD35-JD36200668.0008.9240.2630.7010.468JD36-JD37200531.58619.0700.5612.8581.519JD37-JD38200461.4144.3540.1280.1860.086JD37-JD90250201.23131.5580.6372.8070.570JD38-JD39200984.0007.8880.2320.5580.549JD39-JD40250998.00024.6510.4681.5861.583JD40-JD41250470.70537.0730.7041.3751.589JD41-JD42250527.29520.3080.3851.1080.584JD41-JD96200384.50328.4580.8385.9932.304JD42-JD43250995.00031.1830.6302.7492.735JD41-JD44250994.00010.1070.1920.3050.303JD41-JD102250486.29844.0110.8354.6352.254JD44-JD45250997.00026.9460.5111.8701.865JD45-JD46250995.00041.7930.8314.5934.570JD46-JD47300305.00054.7880.7212.8620.873JD47-JD48300986.00065.7070.8654.0061.950JD48-JD49350975.00082.2920.8002.9082.836JD49-JD50400994.00098.9450.7422.1842.171JD50-JD51900976.000711.9751.0731.7181.677JD50-JD104800991.000587.9701.1192.1212.106JD51-JD52900979.000728.5091.0981.7921.755JD52-JD531000997.000745.2210.9101.1221.119JD51-JD5412001001.0001337.4751.1831.5121.514JD51-JD55800995.000566.9411.0791.9821.972JD55-JD56800996.000550.1021.0471.8751.867JD56-JD57800947.573531.6641.0151.7721.680JD57-JD58200996.00011.7880.3471.1741.169JD57-JD60700986.000426.2961.0592.2322.200JD57-JD106350990.00062.4300.6071.7451.727JD58-JD59200996.0005.0590.1490.2450.244JD60-JD61700956.000409.8721.0182.0751.984JD61-JD62700501.233397.5310.9871.9610.987JD62-JD63600992.000341.6101.0792.6522.631JD62-JD108300991.00034.8950.4591.2421.231JD61-JD64300962.00012.7420.1680.1930.185JD61-JD66600999.000329.3771.0402.4792.476JD64-JD65300987.00029.2260.3850.8950.883JD66-JD67600998.000312.4870.9872.2492.244JD67-JD68600985.000295.7160.9342.0312.000JD68-JD69600240.140285.3540.9011.9010.457JD69-JD70200831.00019.4270.5722.9572.464JD69-JD73500988.000220.7170.9932.7892.755JD69-JD111200992.00019.3880.5712.9462.923JD70-JD71200994.0001.9750.1170.1570.156JD71-JD72250991.00012.8130.2430.4730.469JD71-JD74500988.000204.0050.9182.4112.382JD74-JD75500391.282192.3230.8652.1620.850JD75-JD76200830.00026.6190.7835.2974.396JD75-JD79400999.000131.4841.0011.8001.796JD75-JD81200988.0005.0690.1490.2460.243JD76-JD77200997.00011.1670.3291.0621.059JD77-JD78200996.0005.6890.1670.3050.304JD79-JD80350981.000116.7211.1345.5525.458JD81-JD82200999.00011.7360.3451.1641.163JD82-JD83200989.00028.5500.8406.0295.963JD81-JD84400987.000110.8680.8322.6952.660JD81-JD86500551.867160.8150.7231.5520.860JD84-JD85350992.00094.1310.9151.7301.700JD86-JD87500994.000171.9060.7821.7941.784JD87-JD88350996.00077.3280.7512.5922.582JD87-JD91600615.539309.0260.9762.2031.356JD87-JD109200998.00027.3150.8045.5565.545JD88-JD89300995.00060.4890.7961.4371.420JD89-JD90250991.00041.6750.8294.5704.538JD91-JD92700994.000322.6390.8011.3331.325JD92-JD93700997.000339.4780.8431.4641.460JD91-JD94350999.00071.8030.7172.3782.376JD91-JD97800162.377438.6330.8351.2330.200JD91-JD107250991.0001.2850.0240.0070.007JD94-JD95300996.00056.9300.7491.0721.060JD95-JD96250991.00040.1080.7611.9041.876JD97-JD98800870.000447.3640.8511.2791.113JD98-JD99800997.000461.1540.8811.3641.360JD99-JD100350994.00089.8700.8731.4231.403JD99-JD103800797.778556.2991.0591.9141.527JD99-JD105300997.00028.7430.3780.8680.865JD100-JD101350972.00071.2430.7122.3452.279JD101-JD102300999.00056.5730.7451.0371.034JD101-JD104800977.000571.3091.0872.0111.964JD105-JD106300998.00045.6160.6002.0392.035JD107-JD108250996.00018.0900.3430.8950.891JD109-JD110200770.00012.3620.3641.2820.987JD110-JD111200996.0002.5740.0760.0700.0701.5.2事故工况校核给水管网主要管线损坏时必须及时检修，在检修和恢复供水前，该管段停止输水，整个管网的水力特性改变，供水能力降低。根据国家有关规定，城市给水管网在事故工况下，必须保证70%以上用水量。一般按最不利事故工况进行校核，即考虑靠近供水泵站主干管在最高时损坏的情况；节点压力仍按设计时的服务水头要求表1-7平差计算依据和结果平差计算依据和结果平差类型事故校核2、计算公式海曾威廉公式V=0.44*C*(Re/C)^0.075*(g*D*I)^0.5Re=V*D/ν计算温度：13℃ν=0.0000013、局部损失系数：1.204、水源点水泵参数:无参数5、管网平差结果特征参数水源点编号节点流量(L/s)节点压力(m)JD1-1438.696109.726最大管径(mm):1600.00最小管径(mm):200.00最大流速(m/s):0.805最小流速(m/s):0.019水压最低点JD25压力(m):-0.01自由水头最低点JD25自由水头(m):-41.26表1-8平差计算节点参数表平差计算节点参数节点编号流量(L/s)地面标高(m)节点水压(m)自由水头(m)JD1-1428.92761.510109.72676.216JD22.05561.930109.68775.757JD37.95761.590109.63178.041JD44.77264.830109.51174.681JD5170.12965.230109.19171.961JD610.45066.490108.61372.123JD711.75868.210107.92169.711JD817.60164.270107.26772.997JD911.69866.160106.27070.110JD1011.75266.860105.34468.484JD1117.65467.290104.48967.199JD1211.73469.540101.51061.970JD1311.52167.630102.63565.005JD1411.52169.680101.88462.204JD1517.54870.320101.19760.877JD1611.65171.850100.28358.433JD1711.69870.21099.52759.317JD1811.50269.53098.90659.376JD195.91468.22098.64460.424JD2010.02569.42098.13158.711JD2111.55670.65097.20056.550JD2211.58071.58096.68155.101JD2311.76472.36096.17451.814JD249.78671.98095.88951.909JD259.76871.250-0.010-41.260JD2611.76470.76081.97941.219JD2711.69869.68085.14545.465JD2811.68768.20089.24751.047JD2915.52369.72092.29252.572JD3011.53270.86091.77550.915JD3111.78171.69091.91750.227JD3211.72272.68091.86651.186JD3311.97971.59095.75054.160JD3411.79972.87091.60750.737JD359.85171.16091.40652.246JD367.10272.67091.58550.915JD377.09470.63094.27051.640JD388.56971.48094.20452.724JD3911.73470.26094.42354.163JD408.69569.11095.17856.068JD418.18570.83095.95755.127JD429.01271.46096.23554.775JD4314.65472.65097.58054.930JD4411.78774.36097.71851.358JD4511.79375.53098.63951.109JD467.69676.280100.93754.657JD477.64374.160101.37857.218JD4811.61071.850101.38361.533JD4911.65770.260104.82764.567JD5017.54271.470105.93664.466JD5111.57469.880106.76066.880JD5211.69867.350107.62470.274JD5317.71964.810108.17671.366JD5411.75262.190108.90176.711JD5511.78766.750107.26970.519JD5611.50768.530106.41467.884JD5721.20570.290105.64765.357JD5811.79371.630105.11161.481JD5911.74671.560105.27361.713JD6011.49776.250104.67458.424JD618.63977.680101.80356.123JD6214.71978.240101.37255.132JD6317.48277.190102.27955.089JD6411.53975.380102.48157.101JD6511.74076.610101.13656.526JD6611.82374.350101.21856.868JD6711.74077.530100.26752.737JD687.25375.24099.42954.189JD6918.07571.86099.23955.379JD7010.81671.54098.76157.221JD7111.75271.20098.84357.643JD7211.71072.73099.43656.706JD7311.69871.68098.11354.433JD748.17775.38097.15951.779JD7519.00674.16096.82552.665JD7610.81676.29096.08549.795JD7711.79974.38096.09151.711JD7811.75872.94097.38654.446JD7911.73472.72095.35352.633JD809.80471.35091.33151.981JD8111.76475.83096.37550.545JD8211.77076.98096.58949.609JD8314.97774.36098.74454.384JD8411.71671.58097.50255.922JD856.11870.20095.80855.608JD869.16472.85099.13456.284JD8721.33470.26099.95159.691JD8811.78768.63098.62659.996JD8911.77070.25096.87556.625JD907.08272.15094.56052.410JD919.52972.690100.59557.905JD9211.78771.480101.22757.747JD9318.64574.620101.92657.306JD9411.81171.860100.70258.842JD9511.77570.23099.12858.898JD968.15571.09097.13756.047JD976.11272.800102.02259.222JD9811.05371.740102.55658.816JD9922.41375.290101.21057.920JD10011.63971.600101.46057.860JD10111.66971.870100.28958.419JD1028.79339.58098.73359.153JD10310.50771.630101.95262.322JD10411.66372.980104.90961.929JD10511.81172.850101.67160.821JD10611.77071.960104.74262.782JD10711.76472.070101.96659.896JD10811.76470.660102.60961.949JD10910.46771.77097.55355.783JD11010.45571.87097.21851.348JD11111.77071.36097.34655.986表1-9平差计算管段参数表平差计算管道参数管道编号管径(mm)管长(m)流量(L/s)流速(m/s)千米损失(m)管道损失(m)JD1-JD21600102.0001428.9270.6850.3870.039JD2-JD31600141.0001426.8730.6840.3860.055JD1-JD41000217.005508.5170.6210.5530.120JD1-JD541200984.000910.3990.8050.7420.730JD4-JD51000589.000501.7450.6150.5440.320JD5-JD6800778.000331.6160.6350.7430.578JD6-JD7800987.000321.1670.6150.7010.692JD7-JD8800999.000311.4090.5930.6540.654JD8-JD9700986.000278.0060.6901.0120.998JD8-JD59200988.00015.8020.4652.0181.994JD9-JD10700990.000266.3070.6610.9350.925JD10-JD11700995.000254.5560.6320.8600.855JD11-JD12600991.000200.2840.6320.9880.979JD11-JD65300996.00036.6180.4821.3581.353JD12-JD13600991.000188.5500.5950.8830.875JD11-JD14600955.000177.0290.5590.7860.751JD14-JD15600991.000165.5080.5230.6940.688JD15-JD16500986.000121.6940.5470.9270.914JD15-JD72250987.00026.2670.4991.7841.761JD16-JD17500982.000110.0430.4950.7700.756JD17-JD18500994.00098.3440.4420.6250.621JD18-JD19400296.58360.6260.4550.8820.262JD18-JD78250990.00024.2170.4601.5351.520JD19-JD20400702.41754.7110.4100.7300.513JD20-JD21350991.00044.6860.4340.9400.931JD21-JD22350961.00031.1300.3220.5400.519JD22-JD23300995.00021.5490.2840.5090.507JD21-JD24250992.0009.7860.1860.2870.285JD26-JD27200998.00011.7630.3461.1691.167JD27-JD28200978.00021.4620.6904.1934.101JD28-JD29250996.00035.1480.6671.0581.046JD29-JD30200951.0007.7650.2290.5420.517JD29-JD80350671.03758.4360.5681.5441.039JD30-JD31200995.0001.7680.1110.1420.142JD31-JD32200995.00015.5490.4581.9591.949JD32-JD33250985.00027.2710.5181.9121.884JD31-JD34200997.00016.3490.4812.1492.143JD31-JD8535041.36155.5990.5401.4080.058JD34-JD35200996.0004.5490.1340.2020.201JD35-JD36200668.0005.3020.1560.2680.179JD36-JD37200531.58612.4040.3651.2900.686JD37-JD38200461.4141.7750.1110.1430.066JD37-JD90250201.23121.2730.4421.4260.290JD38-JD39200984.0004.7940.1410.2220.219JD39-JD40250998.00016.5280.3140.7570.756JD40-JD41250470.70525.2240.4791.6550.779JD41-JD42250527.29511.5900.2580.5270.278JD41-JD96200384.50319.8190.5831.0691.180JD42-JD43250995.00022.6030.4291.3511.344JD41-JD44250994.0006.6180.1260.1390.138JD41-JD102250486.29830.6390.5822.3721.153JD44-JD45250997.00018.4060.3490.9240.921JD45-JD46250995.00030.1980.5732.3092.298JD46-JD47300305.00037.8950.4991.4470.441JD47-JD48300986