綿陽市某地區(qū)給水工程輸配水管網(wǎng)設(shè)計案例目錄TOC\o"1-3"\h\u19382綿陽市某地區(qū)給水工程輸配水管網(wǎng)設(shè)計案例 1175781.1輸配水管線布置 1184071.2管網(wǎng)定線比較 194901.3管網(wǎng)水量計算 213741.4管網(wǎng)平差 51.1輸配水管線布置在本設(shè)計中，輸水管線是指凈水廠到配水管網(wǎng)間的干管。輸水管線兩根輸水管并聯(lián)布置，中途設(shè)置聯(lián)絡(luò)管。配水管是指直接向用戶配水的管道，為保證向用戶供水安全又可靠，因此在樹狀網(wǎng)和環(huán)狀網(wǎng)之間選擇環(huán)狀網(wǎng)。管網(wǎng)定線時其延伸方向應(yīng)與主流方向一致，從二泵站供水到大用戶的方向。干管間距一般采用400～900m，連接管間距采用700~1100m，干管與連接管之間間距按干管間距確定，即400~900m。1.2管網(wǎng)定線比較方案一：取水點與水廠距離較近，水廠距城市管網(wǎng)較遠(yuǎn)，配水起點在城市西南角。具體方案如圖4-1圖4-1：定線方案一方案二：取水點與水廠距離較近，水廠距城市管網(wǎng)較遠(yuǎn)，配水起點較方案一相比向北偏移。具體方案如圖4-2圖4-2：定線方案二由于干管延伸方向應(yīng)該和二級泵站向大用戶供水方向一致，本市有3個大用戶，因此本次設(shè)計主流方向為東北。為了避免水廠接入管道與城市管網(wǎng)形成銳角，防止回流水的產(chǎn)生，保證最短供水原則。同時考慮城市等高線縱向分布，綜上所述，選用定線方案二。方案二等壓線圖如下4-3：圖4-3：等壓線圖1.3管網(wǎng)水量計算1.3.1比流量計算對各節(jié)點沿干管方向進(jìn)行編號，編號后各管段的實際長度和計算長度如表4-1所示：表4-1管段管段長度計算長度管段管段長度計算長度1-2749.48749.4828-291002.251002.251-5759.26379.6329-24812.55812.555-6810.43601.3223-51222.28222.282-6851.56851.5624-25676.77676.772-3221.57221.5729-30460.54460.543-4741.8741.830-25581.8581.84-7951.51475.7630-31851.3851.36-7801.89801.8925-26856.36428.181-8639.95319.9631-26539.74269.872-9671.48671.4833-34756.25756.258-9872.48872.4828-34700.68700.689-10471.84471.8434-35630.61630.613-10731.73731.7329-35666.97666.9710-11822.82822.8235-36566.28566.284-11582.09291.0530-36645.86645.868-121083.41547.7136-37923.25923.2512-13763.44763.4431-37781.86392.439-13845.67845.6733-38646.87323.4410-14707.73707.7338-39692.01692.0113-14561.66561.6634-39670.5670.514-15848.62848.6239-40605.67605.6711-15651.39325.735-40631.22631.2212-16888.04441.0240-41439.55439.5516-17743.33371.6736-41592.59592.5913-17931.04931.0441-421078.381078.3817-18725.09362.5537-42785.88785.8814-181015.161015.1638-43620.13377.0718-19818.67409.3443-44466.01466.0115-191031.59517.339-44528.44528.447-20173.9044-45858.42858.4220-27339.62169.8141-45499.19499.1932-27371.82185.9145-46359.92359.924-32200.2046-47725.43495.5732-33371.82185.9142-47696.08592.5811-33167.58043-48756.5378.2520-21749.41371.7148-49616.3616.321-22871.65871.6544-49703.96703.9627-28908.75908.7549-50776.15776.1528-22868.45868.4550-46153.41153.4122-23590.41590.4150-52145.6145.623-24465.04465.04實際長度總和：54111.94計算長度總和：45646.6故比流量：=0.031842L/（s·m）1.3.2沿線流量計算沿線流量計算表如表4-2所示：表4-2各管道沿線流量管段計算長度沿線流量管段計算長度沿線流量1-2749.4823.8652928-291002.2531.91411-5379.6312.0883529-24812.5525.873595-6601.3219.1475123-51222.287.0779422-6851.5627.2112924-25676.7721.550022-3221.577.05533429-30460.5411.664733-4741.823.6207430-25581.818.525944-7475.7615.1493730-31851.327.203016-7801.8925.5341525-26428.1813.63431-8319.9610.1883131-26269.878.5933242-9671.4821.477133-34756.2521.080868-9872.4827.7819128-34700.6822.311379-10471.8415.0245534-35630.6120.080173-10731.7323.3956129-35666.9721.2379710-11822.8226.2006135-36566.2818.031754-11291.059.26774830-36645.8620.565778-12547.7117.4404336-37923.2529.3985512-13763.4421.3098131-37392.4312.495949-13845.6726.9282133-38323.4410.2991310-14707.7322.5358638-39692.0122.035313-14561.6617.8846434-39670.521.3503714-15848.6227.0221539-40605.6719.2860211-15325.710.3710935-40631.2220.099612-16441.0211.1386940-41439.5513.9963516-17371.6711.8348936-41592.5918.8695213-17931.0429.646641-421078.3831.3382717-18362.5511.5444837-42785.8825.0243514-181015.1632.3251938-43377.0712.0068418-19409.3413.0343943-44466.0111.838915-19517.316.472139-44528.4416.826837-200044-45858.4227.334220-27169.815.40716841-45499.1915.8954432-27185.915.91983245-46359.9211.460744-320046-47495.5715.7801732-33185.915.91983242-47592.5818.869211-330043-48378.2512.0444120-21371.7111.9316948-49616.319.6245121-22871.6527.7554844-49703.9622.4158227-28908.7528.9368349-50776.1521.7145228-22868.4527.6535850-46153.411.88495222-23590.4118.8001150-52145.61.63626223-24465.0411.808021.3.3節(jié)點流量節(jié)點流量如表4-3所示：表4-3最高時節(jié)點流量節(jié)點編號節(jié)點流量節(jié)點編號節(jié)點流量節(jié)點編號節(jié)點流量123.071911.753643.43239.80208.673733.46327.042119.843822.17421.022258.073939.75515.622320.344026.69635.952431.124141.55720.342526.864239.12827.712611.114319.45945.612720.134440.711043.582855.414550.101122.922946.854616.061227.943040.484717.321349.383121.154815.831449.88325.924933.381526.933320.155017.121612.993443.91513.541726.513539.72522.321858.98水廠所在點0：1527.751.4管網(wǎng)平差1.1.1初分流量和管徑根據(jù)初分流量利用界限流量法確定管徑。表4-4管徑（mm）界限流量管徑（mm)界限流量管徑（mm)界限流量100<935068～96700355～4901509～1540096～130800490～68520015～28.5450130～168900685～82225028.5～45500168～2371000822～112030045～68600237～355表4-5初分流量和管徑管段初分流量初分管徑管段初分流量初分管徑1-2730.9990028-29170.185001-5435.6270029-243.121505-642070023-513.541502-615.9520024-25282002-3599.6380029-3089.493503-4486.3770030-256.861504-747.7630030-3130.722506-740070025-2681501-8338.0760031-263.111502-975.6135033-34265.996008-920050028-3463.913009-1017050034-35215.995003-1086.2230029-3530.7225010-11132.6445035-36176.995004-116030030-3611.431508-12110.3640036-376530012-1346.9430031-373.461509-136030033-38166.5845010-148035038-3946.4430013-1437.5625034-397035014-1517.6820039-4016.6920011-151720035-403025012-1635.4825040-412020016-1722.4920036-4179.9935013-172020041-428.4415017-1815.9815037-423525014-185030038-4397.9740018-19715043-4425.8120015-197.7515039-44603007-20427.4270044-4510.115020-2727060041-455030032-2748.6730045-46101504-32351.5970046-471315032-3330060042-4743.225011-33152.7245043-4852.7130020-21148.7545048-4936.8825021-22128.9140044-493525027-28298.5460049-5038.525028-229.0415050-4619.0620022-2379.8835050-522.3215023-2456300輸水管0-1（兩根并聯(lián)）：2×1069.425L/sDN10001.1.2最高時管網(wǎng)平差根據(jù)初分流量和管徑，利用哈代克羅斯法解環(huán)方程。同時調(diào)整管徑，使各管段流速基本滿足經(jīng)濟(jì)流速，即DN<400時，v=0.6m/s~0.9m/s，DN>400時，v=0.9m/~1.4m/s；最終使閉合差小于0.01，滿足電算精度。最高時管網(wǎng)平差如表4-6所示：表4-6最終平差結(jié)果環(huán)號管段管長m公稱直徑計算內(nèi)徑CH最終平差結(jié)果q（L/s）v（m/s）1000ih（m）閉合差I(lǐng)1-2749.5900900120762.471.201.521.1402-6851.620019912015.750.501.791.536-5810.4700700120-410.811.071.65-1.335-1759.3700700120-426.431.111.76-1.34II2-3221.6800800120618.141.232.790.410.013-4741.8700700120527.991.370.711.944-7951.530029912020.60.290.020.397-6801.9700700120-390.621.020.49-1.26-2851.6200199120-15.750.501.79-1.53III1-8640600600120315.871.120.491.3708-9872.5500500120181.060.940.211.679-2671.5350350120-88.780.920.13-1.92-1749.5900900120-762.471.201.52-1.14IV2-9671.535035012088.780.920.131.909-10471.8500500120176.510.900.370.8410-3731.7300299120-63.10.890.09-2.333-2221.6800800120-618.141.232.79-0.41V3-10731.730029912063.10.890.092.33010-11822.8450450120105.750.660.130.9411-4731.7300299120-52.430.740.09-1.334-3741.8700700120-527.991.370.71-1.94VI8-121083.4400400120101.010.830.12.14012-13763.430029912045.680.650.061.3513-9845.7300299120-50.720.720.06-1.829-8872.5500500120-181.060.940.21-1.67VII9-13845.730029912050.720.720.061.82-0.0113-14561.725024912029.420.600.051.0714-10707.7350350120-90.290.940.13-2.0610-9471.8500500120-176.510.900.37-0.84VIII10-14707.735035012090.290.940.132.060.0114-15848.620019912013.330.420.021.1215-11651.4200199120-22.350.710.03-2.2311-10822.8450450120-105.750.660.13-0.94IX12-1688825024912030.380.620.031.8016-17743.320019912017.390.550.021.617-13931200199120-17.60.560.02-2.0513-12763.4300299120-45.680.650.06-1.35X13-1793120019912017.60.560.022.05017-18725.11501491208.490.480.011.6918-141015.2300299120-56.490.800.06-2.6714-13561.7250249120-29.420.600.05-1.07XI14-181015.230029912056.490.800.062.67018-19818.715014912060.340.011.0119-151031.6150149120-8.750.500.01-2.5615-14848.6200199120-13.330.420.02-1.12XII4-32200.2700700120430.951.122.150.5032-27371.830029912020.60.290.020.627-20339.6600600120-241.520.860.72-0.4520-7173.9700700120-390.871.02-2.25-0.267-4951.5300299120-20.60.290.02-0.39XIII4-11731.730029912052.430.740.091.33011-33167.6450450120112.910.710.670.333-32371.8600600120-381.81.351.03-1.1332-4200.2700700120-430.951.122.15-0.5XIV20-27339.6600600120241.520.860.720.45-0.0127-28908.8600600120267.620.950.291.4328-22868.51501491207.670.430.011.6822-21871.6400400120-117.840.940.14-2.1721-20749.4450450120-137.680.870.18-1.4XV28-291002.3500500120171.270.870.171.68029-24812.51501491208.150.460.011.7624-23465300299120-43.570.620.09-0.7623-22590.4350350120-67.450.700.11-122-28868.5150149120-7.670.430.01-1.68XVI29-30460.535035012093.070.970.21.42030-25581.815014912011.370.640.022.3325-24676.8200199120-20.590.660.03-1.9924-29812.5150149120-8.150.460.01-1.76XVII30-31851.325024912036.590.750.042.45031-26539.71501491206.010.340.010.6626-25856.4150149120-5.10.290.01-0.7825-30581.8150149120-11.370.640.02-2.33XVIII33-34756.3600600120312.261.100.411.59034-28700.7300299120-33.260.470.05-0.6928-27908.8600600120-267.620.950.29-1.4327-32371.8300299120-20.60.290.02-0.632-33371.8600600120381.81.351.031.13XIX34-35630.6500500120229.131.170.361.81035-29667150149120-1.640.260.01-0.8229-281002.3500500120-171.270.870.17-1.6828-34700.730029912033.260.470.050.69XX35-36566.3500500120181.260.940.331.09036-30645.9150149120-1.640.260.01-0.4930-29460.5350350120-93.070.970.2-1.4229-356671501491201.640.260.010.82XXI36-37923.330029912063.930.900.073.05-0.0137-31781.9150149120-6.430.360.01-1.131-30851.3250249120-36.590.750.04-2.4530-36645.91501491201.640.260.010.49XXII33-38646.9450450120162.31.020.251.64038-3969230029912046.050.650.071.2539-34670.5350350120-72.490.750.11-1.334-33756.3600600120-312.261.100.41-1.59XXIII34-39670.535035012072.490.750.111.3039-40605.720019912019.690.630.031.6440-35631.2250249120-28.360.580.04-1.1335-34630.6500500120-229.131.170.36-1.81XXIV35-40631.225024912028.360.580.041.13040-41439.620019912021.360.680.051.3941-36592.6350350120-81.530.850.14-1.4336-35566.3500500120-181.260.940.33-1.09XXV36-41592.635035012081.530.850.141.43041-421078.415014912010.770.610.013.9142-37785.9250249120-36.90.750.05-2.2937-36923.3300299120-63.930.900.07-3.05XXVI38-43620.140040012091.070.750.151.02043-4446620019912023.410.750.051.7444-39528.4300299120-59.10.840.11-1.5139-38692300299120-46.050.650.07-1.25XXVII39-44528.430029912059.10.840.111.51044-45858.41501491209.740.550.012.5945-41499.2300299120-50.570.720.1-1.0741-40439.6200199120-21.360.680.05-1.3940-39605.7200199120-19.690.630.03-1.64XXVIII41-45499.230029912050.570.720.11.07045-46369.915014912010.20.580.031.1846-47725.41501491208.770.500.011.847-42696.1250249120-8.550.170.01-0.1442-411078.4150149120-10.770.610.01-3.91XXIX43-48756.530029912051.220.720.071.66048-49616.325024912035.390.720.061.6649-44704250249120-32.050.650.05-1.5844-43466200199120-23.410.750.05-1.74XXX49-50776.125024912031.060.690.041.95050-46153.420019912011.620.470.10.2446-45369.9150149120-10.20.580.03-1.1845-44858.4150149120-9.740.550.01-2.5944-4970425024912032.050.650.051.58控制點為節(jié)點42，控制點自由水頭為28m。各節(jié)點絕對水壓，自由水頭，地面標(biāo)高如表4-7所示：表4-7節(jié)點編號節(jié)點水壓地面標(biāo)高自由水頭1509.65469.739.952508.51468.8539.663508.11468.7639.354506.16468.4237.745508.31470.1338.186506.98469.3437.647505.78468.6737.118508.28469.1739.119506.61468.737.9110505.77468.3837.3911501.8346836.8312506.14468.3937.7513501.79468.2736.5214503.71468.0635.6515502.6467.5535.0516501.34467.2437.117502.74467.1935.5518501.05466.9531.119500.04466.8533.1920505.52468.736.8221501.11469.1531.9622501.95468.9433.0123500.95468.6832.2724500.19468.4131.7825498.2468.130.126497.42467.529.9227505.06468.5736.4928503.63468.4435.1929501.95468.2633.6930500.53468.0332.531498.08467.4230.6632505.66468.3237.3433501.53467.9636.5734502.94468.0831.8635501.13468.0233.1136500.04467.7232.3237496.99467.1329.8638502.89467.5535.3439501.64467.7933.8540500467.432.641498.61467.2831.3342491.7466.72843501.87467.1631.7144500.13467.0833.0545497.54466.7530.7946496.36466.5429.8247491.56466.1428.4248500.21466.231.0149498.55466.1832.3750496.6466.330.351500.84468.7432.152496.57466.130.470510.24470.839.44由上表知，從水廠到最不利點的沿程水頭損失為11.44m。1.1.3消防時管網(wǎng)平差（1）消防水量：Qxmax=Qh+Qx=1527.75+2×75=1677.75(L/s)。（2）消防時著火點應(yīng)設(shè)為最高時控制點和大用戶所在點。故節(jié)點42和節(jié)點18（工廠C所在點）設(shè)為著火點。（3）消防時，各管段流速小于等于2.5m/s。（4）消防時平差如表4-8所示。表4-8消防時平差結(jié)果環(huán)號管段管長公稱直徑計算內(nèi)徑CH最終平差結(jié)果q（L/s）v（m/s）1000ih（m）閉合差I(lǐng)1-2749.5900900120838.71.321.121.360.002-6851.620019912016.690.530.021.76-5810.4700700120-442.951.150.55-1.535-1759.3700700120-458.571.190.6-1.53II2-3221.6800800120679.691.353.070.480.003-4741.8700700120579.171.500.782.314-7951.530029912018.380.260.020.317-6801.9700700120-423.691.100.53-1.46-2851.6200199120-16.690.530.02-1.7III1-8640600600120357.411.260.561.720.008-9872.5500500120209.241.070.242.129-2671.5350350120-102.521.070.15-2.482-1749.5900900120-838.71.321.12-1.36IV2-9671.5350350120102.521.070.152.480.009-10471.8500500120203.971.040.431.0910-3731.7300299120-73.48-1.040.1-3.093-2221.6800800120-679.691.353.07-0.48V3-10731.730029912073.48-1.040.13.090.0110-11822.8450450120105.010.660.130.9311-4731.7300299120-60.120.850.1-1.724-3741.8700700120-579.171.500.78-2.31VI8-121083.4400400120120.460.960.112.810.0112-13763.430029912055.910.790.071.9713-9845.7300299120-62.180.880.07-2.659-8872.5500500120-209.241.070.24-2.12VII9-13845.730029912062.180.880.072.650.0013-14561.725024912045.560.930.082.4214-10707.7350350120-128.861.340.18-3.9810-9471.8500500120-203.971.040.43-1.09VIII10-14707.7350350120128.861.340.183.980.0014-15848.620019912012.640.400.011.0115-11651.4200199120-30.860.980.05-1.0611-10822.8450450120-105.010.660.13-0.93IX12-1688825024912036.610.750.042.550.0016-17743.320019912023.620.750.032.8217-13931200199120-23.140.740.02-3.413-12763.4300299120-55.910.790.07-1.97X13-1793120019912023.140.740.023.40.0017-18725.115014912020.251.150.038.4818-141015.2300299120-111.91.580.11-9.4614-13561.7250249120-45.560.930.08-2.42XI14-181015.2300299120111.91.580.119.460.0018-19818.7150149120-1.820.100-0.1119-151031.6150149120-16.570.940.02-8.3415-14848.6200199120-12.640.400.01-1.01XII4-32200.2700700120476.651.242.380.610.0132-27371.830029912041.650.590.110.5627-20339.6600600120-271.770.960.8-0.5520-7173.9700700120-421.731.102.43-0.37-4951.5300299120-18.380.260.02-0.31XIII4-11731.730029912060.120.850.11.720.0011-33167.6450450120111.350.700.660.333-32371.8600600120-429.081.521.15-1.4132-4200.2700700120-476.651.242.38-0.61XIV20-27339.6600600120271.770.960.80.550.0027-28908.8600600120293.291.040.321.728-22868.51501491207.250.410.011.5122-21871.6400400120-121.450.970.14-2.2921-20749.4450450120-141.260.890.19-1.47XV28-291002.3500500120188.590.960.192.010.0129-24812.51501491207.360.420.011.4624-23465300299120-46.750.660.1-0.8623-22590.4350350120-70.630.730.12-1.0922-28868.5150149120-7.250.410.01-1.51XVI29-30460.5350350120102.761.070.221.70.0030-25581.8150149120110.620.022.225-24676.8200199120-22.980.730.03-2.4424-29812.5150149120-7.360.420.01-1.46XVII30-31851.325024912043.20.880.053.330.0131-26539.71501491203.980.230.010.3126-25856.4150149120-7.130.400.01-1.4525-30581.8150149120-110.620.02-2.2XVIII33-34756.3600600120345.511.220.461.910.0134-28700.7300299120-42.040.590.06-1.0728-27908.8600600120-293.291.040.32-1.727-32371.8300299120-41.650.590.11-0.5632-33371.8600600120429.081.521.151.41XIX34-35630.6500500120266.781.360.422.40.0035-29667150149120-31.620.640.05-1.4629-281002.3500500120-188.590.960.19-2.0128-34700.730029912042.040.590.061.07XX35-36566.3500500120228.461.160.41.620.0036-30645.9150149120-8.080.460.01-1.3830-29460.5350350120-102.761.070.22-1.729-3566715014912031.620.640.051.46XXI36-37923.3300299120102.11.440.117.260.0037-31781.9150149120-15.070.850.02-5.3131-30851.3250249120-43.20.880.05-3.3330-36645.91501491208.080.460.051.38XXII33-38646.9450450120171.771.100.271.880.0038-3969230029912050.550.720.071.4839-34670.5350350120-76.860.800.11-1.4534-33756.3600600120-345.511.220.46-1.91XXIII34-39670.535035012076.860.800.111.450.0039-40605.720019912023.20.740.042.2240-35631.2250249120-30.220.620.05-1.2735-34630.6500500120-266.781.360.42-2.4XXIV35-40631.225024912030.220.620.051.270.0040-41439.620019912026.730.850.062.141-36592.6350350120-910.950.15-1.7536-35566.3500500120-228.461.160.40-1.62XXV36-41592.6350350120910.950.151.750.0141-421078.4150149120231.300.0215.9542-37785.9250249120-83.711.710.11-10.4337-36923.3300299120-102.11.440.11-7.26XXVI38-43620.1400400120102.050.810.161.180.0043-4446620019912025.730.820.062.0744-39528.4300299120-61.460.910.12-1.7739-38692300299120-50.55.0.720.07-1.48XXVII39-44528.430029912061.460.910.121.770.0044-45858.415014912011.860.670.013.7245-41499.2300299120-53.190.750.11-1.1741-40439.6200199120-26.730.850.06-2.140-39605.7200199120-23.20.740.04-2.22XXVIII41-45499.230029912053.190.750.111.170.0145-46369.915014912016.940.850.042.3946-47725.415014912021.731.400.0312.2747-42696.12502491207.410.150.010.142-411078.4150149120-231.300.02-15.95XXIX43-48756.530029912056.870.800.082.010.0048-49616.325024912041.040.840.072.1949-44704250249120-37.630.770.05-2.1344-43466200199120-25.730.820.06-2.07XXX49-50776.125024912045.290.920.063.30.0150-46153.420019912025.850.820.170.6946-45369.9150149120-11.940.850.04-2.3945-44858.4150149120-11.860.670.01-3.7244-4970425024912037.630.770.052.13控制點為節(jié)點42，控制點自由水頭為10m。各節(jié)點節(jié)點流量，絕對水壓，自由水頭，地面標(biāo)高如表4-9所示：表4-9消防時各節(jié)點信息節(jié)點編號節(jié)點流量節(jié)點水壓地面標(biāo)高自由水頭123.07506.49469.736.79239.80505.13468.8536.28327.04501.65468.7635.89421.02502.34468.4233.92515.62501.96470.1331.83635.95503.43469.3431.09720.34502.03468.6733.36827.71501.77469.1735.6945.61502.69468.733.991043.58501.56468.3833.181122.92500.6246832.621227.94501.96468.3933.571349.38499.99468.2731.721449.88497.58468.0629.521526.93496.57467.5529.021612.99499.41467.2432.171726.51496.59467.1929.418133.95488.12466.9521.171911.75488.23466.8521.38208.67501.73468.733.032119.84500.26469.1531.112258.07497.97468.9429.032320.34496.88468.6828.22431.12496.02468.4127.612526.86493.57468.125.472611.11492.13467.521.632720.13501.18468.5732.612855.41499.48468.4431.042946.85497.47468.2629.213040.48495.77468.0327.743121.15492.44467.4225.02325.92501.73468.3233.413320.15500.33467.9632.373443.91498.42468.0830.343539.72496.01468.0227.993643.43491.39467.7226.673733.46487.13467.13203822.17498.45467.5530.93939.75496.97467.7929.184026.69491.74467.427.344141.55492.65467.2825.3742111.12476.7466.7104319.45497.27467.1630.114440.71495.19467.0828.114550.10491.47466.7521.724616.06489.08466.5422.544717.32476.8466.1410.664815.83495.25466.229.054933.38493.07466.1826.895017.12489.77466.323.47513.54496.78468.7428.04522.32189.74466.123.6401677.75507.19470.836.39由上表知，從水廠到最不利點的沿程水頭損失為26.39m。1.4事故時管網(wǎng)平差（1）事故水量：Qsmax=0.7Qmax=1527.75×0.7=1069.43(L/s)。（2）將管段1-2定為事故管段，此時管網(wǎng)內(nèi)共有29個環(huán)。（3）事故時平差如表4-10所示。表4-10事故時平差結(jié)果環(huán)號管段管長公稱直徑計算內(nèi)徑CH最終平差結(jié)果q（L/s）v（m/s）1000ih（m）閉合差I(lǐng)1-8640600600120472.071.670.742.89-0.018-9872.5500500120338.151.720.395.159-2671.535035012081.050.870.121.722-6851.6200199120-29.620.940.03-1.946-5810.4700700120-570.271.480.7-2.455-1759.3700700120-581.21.510.77-2.38II2-3221.680080012085.810.170.390.010.003-4741.870070012096.880.250.130.084-7951.5300299120-62.550.880.07-3.027-6801.9700700120-515.481.340.64-2.016-2851.620019912029.62-0.940.031.94III2-9671.5350350120-81.050.870.12-1.720.009-10471.8500500120208.711.060.441.1410-3731.7300299120300.420.040.593-2221.6800800120-85.810.170.39-0.01IV3-10731.7300299120-300.420.04-0.590.0110-11822.8450450120100.970.630.120.8711-4731.7300299120-18.50.260.03-0.194-3741.8700700120-96.880.250.13-0.08V8-121083.4400400120111.530.910.112.550.0012-13763.430029912067.050.950.092.7613-9845.7300299120-13.460.190.02-0.169-8872.5500500120-338.151.720.39-5.15VI9-13845.730029912013.460.190.020.160.0013-14561.725024912036.530.740.071.614-10707.7350350120-47.240.490.07-0.6210-9471.8500500120-208.711.060.44-1.14VII10-14707.735035012047.240.490.070.62-0.0114-15848.620019912012.170.390.010.9415-11651.4200199120-11.930.380.02-0.711-10822.8450450120-100.970.630.12-0.87VIII12-1688825024912027.920.570.031.540.0016-17743.320019912018.830.600.031.8617-13931200199120-9.410.300.01-0.6413-12763.4300299120-67.050.950.09-2.76IX13-179312001991209.410.300.010.640.0017-18725.11501491209.680.550.012.1618-141015.2300299120-36.690.520.04-1.214-13561.7250249120-36.530.740.07-1.6X14-181015.230029912036.690.520.041.20.0118-19818.71501491205.070.290.010.7419-151031.6150149120-5.250.300.01-0.9915-14848.6200199120-12.170.390.01-0.94XI4-32200.2700700120121.120.320.620.050.0132-27371.8300299120-82.351.170.22-1.9627-20339.6600600120-328.71.160.97-0.7820-7173.9700700120-438.691.142.52-0.327-4951.530029912062.550.880.073.02XII4-11731.730029912018.50.260.030.19-0.0111-33167.645045012091.50.580.550.233-32371.8600600120-202.330.720.54-0.3532-4200.2700700120-121.120.320.62-0.05XIII20-27339.6600600120328.71.160.970.78-0.0127-28908.8600600120232.260.820.281.128-22868.51501491202.820.1600.2622-21871.6400400120-90.030.720.1-1.3221-20749.4450450120-103.920.650.14-0.83XIV28-291002.3500500120135.890.690.141.090.0029-24812.51501491203.180.1800.3124-23465300299120-35.480.500.08-0.5223-22590.4350350120-52.20.540.09-0.6222-28868.5150149120-2.820.160-0.26XV29-30460.535035012068.990.720.150.81-0.0130-25581.81501491206.680.380.010.8725-24676.8200199120-16.880.540.02-1.3824-29812.5150149120-3.180.180-0.31XVI30-31851.325024912026.750.540.031.370.0131-26539.71501491203.020.170.010.1926-25856.4150149120-1.760.270.01-0.6825-30581.8150149120-6.680.380.01-0.87XVII33-34756.3600600120172.290.610.230.530.0034-28700.7300299120-51.770.770.08-1.7428-27908.8600600120-232.260.820.28-1.127-32371.830029912082.351.170.221.9632-33371.8600600120202.330.720.540.35XVIII34-35630.6500500120142.930.730.230.760.0135-29667150149120-30.930.630.05-1.429-281002.3500500120-135.890.690.14-1.0928-34700.730029912051.770.770.081.74XIX35-36566.3500500120125.10.640.220.530.0036-30645.9150149120-7.220.410.01-1.1230-29460.5350350120-68.990.720.15-0.8129-3566715014912030.930.630.051.4XX36-37923.330029912043.220.610.051.480.0137-31781.9150149120-6.830.390.01-1.2231-30851.3250249120-26.750.540.03-1.3730-36645.91501491207.220.410.011.12XXI33-38646.9450450120107.440.680.170.76-0.0138-3969230029912028.160.400.040.539-34670.5350350120-53.390.550.08-0.7434-33756.3600600120-172.290.610.23-0.53XXII34-39670.535035012053.390.550.080.740.0039-40605.720019912012.070.380.020.6640-35631.2250249120-20.950.430.03-0.6435-34630.6500500120-142.930.730.23-0.76XXIII35-40631.225024912020.950.430.030.64-0.0140-41439.620019912011.340.460.030.6641-36592.6350350120-58.690.610.01-0.7836-35566.3500500120-125.10.640.22-0.53XXIV36-41592.635035