某縣給排水管網(wǎng)工程畢業(yè)設(shè)計

目錄TOC\o"1-3"\u摘要4Abstract5前言6第一章設(shè)計資料6第二章給水管網(wǎng)設(shè)計說明與計算82.1給水管網(wǎng)的設(shè)計82.1.1給水系統(tǒng)的類型82.1.2給水管網(wǎng)布置的影響因素8管網(wǎng)系統(tǒng)布置原則92.1.4配水管網(wǎng)布置92.2給水管網(wǎng)設(shè)計計算102.2.1設(shè)計用水量的組成102.2.2設(shè)計用水量的計算102.2.3管網(wǎng)水力計算112.3二級泵站的設(shè)計292.3.1水泵選型的原則292.3.2二級泵站流量計算29二級泵站揚程的確定292.3.4水泵校核302.3.5水泵的選擇39第三章排水管網(wǎng)設(shè)計說明與計算403.1排水系統(tǒng)的體制及其選擇403.2排水系統(tǒng)的布置形式403.3污水管網(wǎng)的布置413.4污水管道系統(tǒng)的設(shè)計413.4.1污水管道的定線413.4.2控制點的確定413.4.3污水管道系統(tǒng)設(shè)計參數(shù)423.4.4污水管道上的主要構(gòu)筑物433.5污水管道系統(tǒng)水力計算433.5.1污水流量的計算433.5.2集中流量計算443.5.3污水干管設(shè)計流量計算443.5.4污水管道水力計算443.6雨水管渠的設(shè)計與計算443.6.1雨水管渠系統(tǒng)的設(shè)計步驟443.6.2雨水管道構(gòu)筑物45結(jié)論46總結(jié)與體會46謝辭46參考文獻(xiàn)47附錄摘要本設(shè)計是關(guān)于四川省某縣管網(wǎng)的設(shè)計，它包括給水系統(tǒng)，污水排水系統(tǒng)和雨水排水系統(tǒng)三部分。給水系統(tǒng)是通過地形地貌、已知水文條件結(jié)合給水管網(wǎng)布置的原則進(jìn)行設(shè)計計算的，并應(yīng)用管網(wǎng)平差軟件來解決計算過程中的難點，最后繪制干管的縱斷面圖。污水排水系統(tǒng)的設(shè)計內(nèi)容包括排水系統(tǒng)的體制選擇、劃分排水區(qū)域、結(jié)合設(shè)計要點和自然因素將主干管連入已知污水廠；計算污水設(shè)計流量；確定設(shè)計參數(shù)；繪制管道總平面圖和縱斷面圖。雨水排水系統(tǒng)的設(shè)計內(nèi)容包括劃分排水面積，進(jìn)行雨水管渠定線，定出水口的位置；進(jìn)行雨水管渠水力計算，確定設(shè)計參數(shù)；確定管渠總平面圖和縱斷面圖。關(guān)鍵詞：給水系統(tǒng)，污水排水系統(tǒng)，雨水排水系統(tǒng)，總平面圖，縱斷面圖AbstractThedesignisaboutpipelinenetworkofShanyinCounty,SichuanProvince,thepipelinenetworkincludingwatersupplysystem,seweragesystemandrainwaterdischargesystem.Thewatersupplysystemisdesignedandcalculatedundertheprincipleofconsideringterrainsandlandforms,knownhydrologicconditionsandlayoutofthepipelinenetworkofwatersupplysystem,withproblemsincalculationsolvedbytheapplicationofpipelinenetworkadjustmentsoftware,andatlast,verticalsectiondrawingofthemainismade.Thedesignoftheseweragesystemincludesselectingdrainagesystems,dividingdrainagearea,connectingthemainintoknownsewageplantwiththeconsiderationofmaindesignpointsandnaturalfactors,computingsewagedesigneddischarge,determiningdesignparameters;andmakingthegeneralplanandverticalsectiondrawingofthepipeline.Thedesignofrainwaterdischargesystemincludesdivisionofdrainagearea,alignmentofrainwaterpipeline,positioningoftheoutlet,hydrauliccalculationofrainwaterpipeline,determinationofdesignparameters,anddeterminationofthegeneralplanandverticalsectiondrawingofthepipeline.Keywords:watersupplysystem,seweragesystem,rainwaterdischargesystem,generalplan,verticalsectiondrawing前言城市給水對人民的生活有著極其重要的影響，它關(guān)乎的人們的身體健康，城市排水對受納水體的水量水質(zhì)有較大的影響，城市給排水系統(tǒng)已經(jīng)成為現(xiàn)代城市不可缺少的重要市政基礎(chǔ)設(shè)施，是城市文明、經(jīng)濟發(fā)展和現(xiàn)代化水平的重要標(biāo)志。給排水管網(wǎng)的主要任務(wù)是輸送滿足人們生活要求的飲用水，供給工廠所需要的水，收集輸送人們在生產(chǎn)生活中所排放的污水廢水以及城市雨水、冰雪融水，避免排入江河造成水體的污染。在面臨全球水資源極其缺乏的今天，給排水管網(wǎng)的作用顯得尤為重要。由于城市給排水系統(tǒng)在新的時期賦予了新的內(nèi)涵，與人們的生產(chǎn)和生活息息相關(guān)?？此破椒驳囊?guī)劃設(shè)計卻有著不平凡的現(xiàn)實意義，在滿足規(guī)范和其它技術(shù)要求的條件下，根據(jù)城市的具體情況，科學(xué)規(guī)劃設(shè)計城市給排水管網(wǎng)系統(tǒng)是一個非常重要的課題。第一章設(shè)計資料（1）某縣地形平面圖一張。（2）該縣城位于四川省境內(nèi)，東部環(huán)山，B江在縣城中央穿過將其分為南北兩部分，總體地形較為平坦，縣城總?cè)丝?0萬，設(shè)計用水的最小服務(wù)水頭20m,設(shè)計生活用水量定額為300L/cap·d。（3）該縣城集中用水單位有6個：化工區(qū)24L/s、火車站15L/s、皮毛廠18L/s、針織廠12L/s、棉紡廠12L/s、食品廠12.1L/s。（4）城市自然狀況該地區(qū)全年溫差不大，年平均氣溫15℃，最高氣溫32℃，最低氣溫2℃，夏季主導(dǎo)風(fēng)向位西北風(fēng)，土質(zhì)為黏性土壤。（5）水文資料B江最高洪水位為254m，枯水位為240m，常水位為246m，設(shè)計暴雨強度公式：。（6）雨水管網(wǎng)設(shè)計計算時生活用水量定額按給水的70%進(jìn)行計算，集中流量也按照給水集中流量的70%計算。第二章給水管網(wǎng)設(shè)計說明與計算2.1給水管網(wǎng)的設(shè)計2.1.1給水系統(tǒng)的類型按照城市規(guī)劃，水源情況，城市地形，用戶對水量、水質(zhì)和水壓要求等方面的不同情況，給水系統(tǒng)可有多種布置方式。（1）統(tǒng)一給水系統(tǒng)按照生活飲用水水質(zhì)標(biāo)準(zhǔn)，有統(tǒng)一管網(wǎng)供給生活、生產(chǎn)和消防用水。（2）分質(zhì)給水系統(tǒng)對個別用量大，水質(zhì)要求較低或特殊的工業(yè)用水，可單獨設(shè)置管網(wǎng)供應(yīng)。（3）分壓給水系統(tǒng)根據(jù)給水區(qū)壓力的不同，可采用分壓給水系統(tǒng)。（4）分區(qū)給水系統(tǒng)地形條件對給水系統(tǒng)的布置很有影響。將給水管網(wǎng)系統(tǒng)劃分為多個區(qū)域，各區(qū)域管網(wǎng)具有獨立的供水泵站，供水具有不同的水壓。分區(qū)給水管網(wǎng)系統(tǒng)可以降低平均供水壓力，避免局部水壓過高的現(xiàn)象，減少爆管的概率和泵站能量的浪費。（5）工業(yè)給水系統(tǒng)綜上所述，結(jié)合實際情況，該縣城有一條水量充沛的河流穿城而過，其水質(zhì)良好，可以作為生活飲用水水源，該縣城地形較為平坦，街區(qū)分布比較均勻，各工業(yè)企業(yè)對水質(zhì)無特殊要求，因而采用統(tǒng)一給水管網(wǎng)系統(tǒng)。2.1.2給水管網(wǎng)布置的影響因素城市給水管網(wǎng)的布置取決于城市的平面布置、水源、調(diào)節(jié)構(gòu)筑物的位置、大用戶的分布?？紤]的要點有下：城市規(guī)劃的影響：給水系統(tǒng)的設(shè)置，應(yīng)密切配合城市和工業(yè)區(qū)的建設(shè)規(guī)劃，做到統(tǒng)盤考慮分期建設(shè)，既能及時供應(yīng)生產(chǎn)生活和消防用水，又能適應(yīng)今后發(fā)展的需要水源的影響：本設(shè)計采用地表水并從河流上游取水。2.1.3管網(wǎng)系統(tǒng)布置原則給水管網(wǎng)包括輸水管渠和配水管網(wǎng)兩大部分。要求能夠供給用戶所需水量，保證不間斷供水，同時要保證配水管網(wǎng)足夠的水壓。（1）按照城市總體規(guī)劃，確定給水系統(tǒng)服務(wù)范圍和建設(shè)規(guī)模，結(jié)合當(dāng)?shù)貙嶋H情況布置給水管網(wǎng)，壓進(jìn)行多方案技術(shù)經(jīng)濟比較。（2）分清主次，先進(jìn)行輸水管渠與主干管布置，然后布置一般管線與設(shè)施。（3）盡量縮短管線長度，盡量減少拆遷，少占農(nóng)田，節(jié)約工程投資與運行管理費用。（4）協(xié)調(diào)好與其它管道、電纜和道路等工程的關(guān)系。（5）保證供水具有安全可靠性。（6）管渠的施工、運行和維護(hù)方便。（7）遠(yuǎn)近期結(jié)合，留有發(fā)展余地，考慮分期實施的可能性。2.1.4配水管網(wǎng)布置給水管網(wǎng)遍布整個給水區(qū)，根據(jù)管道的功能，可劃分為干管、分配管、接戶管三類。干管的主要作用是輸水至城市各用水地區(qū)，同時也為沿線用戶配水，起管徑一般在100mm以上，分配管的主要作用是把干管輸送來的誰配給接戶管和消火栓，起管徑一般不予計算，均由消防流量來確定。干管和分配管的管徑并無明確的界限，應(yīng)視規(guī)模確定。干管通常遵循下列原則進(jìn)行布置：（1）干管布置的主要方向應(yīng)按供水主要流向眼神，而供水的流向則取決于最大用水戶或水塔等調(diào)節(jié)構(gòu)筑物的位置。（2）為了保證過供水可靠，通常按照主要流向布置幾條平行的干管，其間用連接管連接，這些管線在道路下以最短的距離到達(dá)用水量大的主要用戶。（3）干管一般按規(guī)劃道路布置，盡量避免在高級路面或重要道路下敷設(shè)。管線在道路下的平面位置和高程應(yīng)符合城市地下管線綜合設(shè)計的要求。（4）干管的高處應(yīng)布置排氣閥，低處應(yīng)設(shè)泄水閥，干管上應(yīng)為安裝消火栓預(yù)留直觀，消火栓的兼具不應(yīng)大于120m。（5）干管的布置應(yīng)考慮發(fā)展和分期建設(shè)的要求，并留有余地。配水管網(wǎng)的布置形式，根據(jù)城市規(guī)劃、用戶分布以及用戶對用水的安全可靠性的要求程度等，分成樹狀網(wǎng)和環(huán)狀網(wǎng)。在本設(shè)計中采用的是環(huán)狀網(wǎng)，當(dāng)任意一段管線損壞時，閘閥可以將它與其余管線隔開進(jìn)行檢修，不影響其余管線的供水，使供水的地區(qū)大為縮小，同時，環(huán)狀網(wǎng)還可以大大減輕因水錘現(xiàn)象所產(chǎn)生的危害。2.2給水管網(wǎng)設(shè)計計算設(shè)計用水量的組成（1）綜合生活用水，包括居民生活用水和公共建筑及設(shè)施用水；（2）工業(yè)且也生產(chǎn)用水和工作人員生活用水；（3）消防用水；（4）澆灑道路和綠地用水；（5）未預(yù)計水量及管網(wǎng)漏失水量。設(shè)計用水量的計算（1）最高日用水量計算該城鎮(zhèn)為中小城市，城市人口20萬人，設(shè)計生活用水量定額為300L/cap·d,自來水用水普及率為100%。綜合生活用水量式中q——最高日生活用水量定額m3/(d·cap)N——設(shè)計年限內(nèi)計劃人口數(shù)f——自來水普及率，%。則工業(yè)生產(chǎn)用水量澆灑道路和綠地用水管網(wǎng)漏失水量⑤最高日用水量最高日平均時用水量最高日最高時用水量清水池容積計算式中：W1——調(diào)節(jié)容積，m3；按最高日用水量的20%估算W2——消防貯水量，m3，按2～3h火災(zāi)延續(xù)時間計算，本設(shè)計采用2h一次用水量45L/sW3——水廠沖洗濾池和沉淀池排泥等生產(chǎn)用水，m3，等于最高日用水量的5%～10%W4——安全儲量，m3，為避免清水池抽空，清水池可保留一定水深（0.5m）作為安全儲量則管網(wǎng)水力計算（1）比流量計算城鎮(zhèn)供水區(qū)總面積∑A=305.7ha，其中水廠到節(jié)點1管段兩側(cè)無用戶。（2）沿線流量計算各管段沿線流量見表2.1。表2.1管段沿線流量管段編號街區(qū)面積（ha))比流量（l/s..ha）沿線流量（l/ss）1--20.564.152.321--61.764.157.301--201.574.156.522--30.864.153.573--40.944.153.903--61.124.154.654--50.84.153.324--71.24.154.985--80.644.152.666--72.284.159.466--192.274.159.427--82.94.1512.048--90.724.152.998--172.64.1510.799--101.14.154.579--163.144.1513.0310--110.064.150.2510--152.934.1512.1611--141.574.156.5213--141.44.155.8113--280.724.152.9914--151.664.156.8914--271.444.155.9815--161.064.154.4015--261.444.155.9816--170.744.153.0716--251.444.155.9817--180.744.153.0717--241.444.155.9818--190.974.154.0318--231.444.155.9819--200.894.153.69續(xù)表119--221.444.155.9820--210.724.152.9921--221.794.157.4321--371.284.155.3122--231.944.158.0522--361.584.156.5623--241.54.156.2323--352.34.159.5524--251.464.156.0624--342.54.1510.3825--262.164.158.9625--331.554.156.4326--273.544.1514.6926--322.64.1510.7927--282.964.1512.2827--312.54.1510.3828--301.334.155.5229--301.434.155.9329--462.14.158.7230--312.84.1511.6230--453.94.1516.1931--323.464.1514.3631--443.744.1515.5232--332.24.159.1332--433.794.1515.7333--341.444.155.9833--423.54.1514.5334--351.254.155.1934--413.584.1514.8635--362.154.158.9235--403.134.1512.9936--371.84.157.4736--393.274.1513.5737--381.84.157.4738--390.874.153.6139--400.824.153.4040--410.674.152.7841--420.724.152.99續(xù)表242--431.14.154.5743--441.964.158.1344--451.44.155.8145--461.44.155.8147--4814.154.1547--680.724.152.9948--491.24.154.9848--671.444.155.9849--500.814.153.3649--661.444.155.9850--511.064.154.4050--651.444.155.9851--521.24.154.9851--641.444.155.9852--531.94.157.8952--631.444.155.9853--542.064.158.5553--621.444.155.9854--551.84.157.4754--611.444.155.9855--561.154.154.7755--601.444.155.9856--570.984.154.0756--591.254.155.1957--580.044.150.1757--811.064.154.4058--591.934.158.0158--791.264.155.2359--602.34.159.5559--781.444.155.9860--613.64.1514.9460--771.444.155.9861--624.124.1517.1061--761.444.155.9862--633.84.1515.7762--751.444.155.9863--642.44.159.9663--741.444.155.98續(xù)表364--652.124.158.8064--731.444.155.9865--661.624.156.7265--721.444.155.9866--672.44.159.9666--711.444.155.9867--6824.158.3067--701.444.155.9868--690.724.152.9969--7024.158.3069--930.724.152.9970--712.44.159.9670--921.444.155.9871--721.624.156.7271--911.444.155.9872--732.124.158.8072--901.444.155.9873--742.44.159.9673--891.444.155.9874--753.84.1515.7774--881.444.155.9875--764.124.1517.1075--871.444.155.9876--773.64.1514.9476--861.444.155.9877--782.34.159.5577--851.444.155.9878--792.34.159.5578--841.444.155.9879--802.094.158.6779--831.444.155.9880--810.064.150.2580--820.724.152.9982--832.464.1510.2182--1051.444.155.9883--842.34.159.5583--1041.444.155.9884--852.34.159.55續(xù)表484--1031.444.155.9885--863.64.1514.9485--1021.444.155.9886--874.124.1517.1086--1011.444.155.9887--883.84.1515.7787--1001.444.155.9888--892.44.159.9688--991.444.155.9889--902.124.158.8089--981.444.155.9890--911.624.156.7290--971.444.155.9891--922.44.159.9691--961.444.155.9892--9324.158.3092--951.444.155.9893--940.724.152.9994--9514.154.1595--961.24.154.9896--970.814.153.3697--981.064.154.4098--991.24.154.9899--1001.94.157.89100--10112.064.158.55101--10221.84.157.47102--10331.154.154.77103--10441.154.154.77104--10551.234.155.10節(jié)點流量計算，其中節(jié)點2，9，11，12，13，29有集中流量，分別為24L/s、15L/s、12.1L/s、12L/s、12L/s、18L/s。各節(jié)點流量見表2.2。表2.2節(jié)點流量節(jié)點節(jié)點流量L/s集中流量L/s最終節(jié)點流量L//s18.078.0722.9452426.9536.066.0646.16.1052.992.99615.41515.42713.2413.24814.2414.24910.2951525.30108.498.49113.38512.115.491201212.00134.41216.401412.612.601514.71514.721613.2413.241711.45511.46186.546.541911.5611.56204.7554.76217.8657.872214.0114.012314.90514.912414.32514.332513.71513.722620.2120.212721.66521.672810.39510.40297.3251825.33續(xù)表13019.6319.633125.9425.943225.00525.013318.03518.043418.20518.213518.32518.333618.2618.263710.12510.13385.545.543910.2910.29409.5859.594110.31510.324211.04511.054314.21514.224414.7314.734513.90513.91467.2657.27473.573.57487.5557.56497.167.16506.876.87517.687.68529.4259.435311.2111.21541111.00559.119.11567.0157.02574.324.32586.7056.715911.7711.77續(xù)表26018.22518.23612222.006222.41522.426318.84518.856415.3615.366513.7413.746614.3214.326713.1213.12687.147.14694.4854.497015.1115.117114.3214.327213.7413.747315.3615.367418.84518.857522.41522.427623.34523.357718.22518.237815.5315.537914.71514.72805.9555.96812.3252.33829.599.598315.8615.868415.5315.538518.22518.23862222.008722.41522.428818.84518.858915.3615.36續(xù)表39013.7413.749114.3214.329215.1115.11939.7959.80943.573.57957.5557.56967.167.16976.876.87987.687.68999.4259.4310011.2111.211011111.001029.119.111037.767.761047.9257.931055.545.54管網(wǎng)平差管網(wǎng)平差的步驟：選取海曾-威廉公式，阻力系數(shù)取110；節(jié)點數(shù)據(jù)輸入地面標(biāo)高，已知水壓，已知流量；管段數(shù)據(jù)輸入管徑，起始終止節(jié)點，長度，阻力系數(shù)；其后進(jìn)行管網(wǎng)平差差，使得數(shù)據(jù)據(jù)處于經(jīng)濟流流速范圍內(nèi)。經(jīng)經(jīng)濟流速見表表2.3。表2.3給水經(jīng)濟濟流速管徑（mm）D=100～4000D≥400平均經(jīng)濟流速（mm/s）0.6～0.90.9～1.4導(dǎo)出管網(wǎng)平差結(jié)果果，見表2.4和表2.5。表2.4管網(wǎng)平平差節(jié)點水壓壓編號地面標(biāo)高已知水壓已知流量節(jié)點水壓自由水頭節(jié)點流量1254.828528530.2-1349.1112254.926.95284.4969929.596926.953254.76.06283.0434428.34346.064254.76.1282.4093327.70936.15254.52.99282.3037727.80372.996254.815.42284.1306629.330615.427254.613.24283.4912228.891213.248253.914.24282.55128.65114.249252.925.3281.9868829.086825.310252.58.49280.8789928.37898.4911252.415.49280.3933327.993315.4912251.512273.1274421.6274121325116.4275.6922224.692216.41425112.6278.44427.44412.615252.314.72278.2466625.946614.721625313.24278.9213325.921313.2417253.611.46280.0797726.479711.4618254.96.54281.3989926.49896.5419254.611.56282.5196627.919611.5620254.74.76284.6925529.99254.7621254.87.87284.4907729.69077.8722254.514.01284.2722229.772214.0123255.214.91284.0467728.846714.9124253.214.33282.0914428.891414.332525313.72281.0902228.090213.722625320.21279.8739926.873920.2127250.721.67279.4896628.789621.672825210.4277.7852225.785210.42925625.33278.8217722.821725.33續(xù)表130252.819.63279.4496626.649619.6331250.425.94280.2545529.854525.943225225.01281.2618829.261825.0133253.218.04282.0704428.870418.043425418.21282.9836628.983618.2135254.718.33283.4405528.740518.3336254.718.26281.30226.60218.2637254.610.13283.4287728.828710.13382545.54281.4328827.43285.543925310.29281.5035528.503510.2940252.29.59282.8791130.67919.5941252.810.32281.4888828.688810.324225311.05278.8428825.842811.054325314.22278.7295525.729514.224425314.73278.1774425.177414.734525213.91277.2832225.283213.9146254.97.27277.19822.2987.2747250.53.57275.6696625.16963.57482517.56278.1008827.10087.5649250.77.16279.7536629.05367.1650250.86.87280.4749929.67496.87512507.68281.1737731.17377.6852249.59.43282.09332.5939.4353249.711.21280.8571131.157111.2154250.411280.0029929.60291155250.89.11278.7032227.90329.11562507.02277.9449927.94497.0257251.14.32276.9424425.84244.3258251.46.71276.7985525.39856.7159252.211.77276.0809923.880911.77續(xù)表260252.618.23278.0406625.440618.2361252.322279.3764427.07642262251.922.42280.0243328.124322.4263252.118.85281.1692229.069218.8564252.215.36279.6569927.456915.3665251.613.74279.9375528.337513.7466251.314.32279.2265527.926514.326725113.12278.1352227.135213.1268250.67.14275.2092224.60927.1469249.74.49274.9112225.21124.4970249.715.11277.9198828.219815.1171250.814.32278.7728827.972814.3272251.713.74279.32727.62713.7473252.615.36278.3939925.793915.3674253.118.85280.5859927.485918.857525322.42278.0683325.068322.4276253.123.35278.6474425.547423.3577253.218.23277.3858824.185818.2378252.515.53275.0992222.599215.5379252.214.72276.3727724.172714.7280251.35.96273.2751121.97515.9681251.12.33273.6772222.57722.3382251.69.59272.1920.599.5983252.215.86275.4115523.211515.8684252.715.53273.4779920.777915.5385253.318.23275.7088822.408818.2386254.222278.2764424.07642287254.822.42278.0142223.214222.4288252.818.85279.9071127.107118.8589252.115.36278.7616626.661615.36續(xù)表390250.913.74278.6642227.764213.7491250.214.32277.8396627.639614.3292250.115.11276.26526.16515.1193249.79.8273.6522223.95229.894249.63.57273.5925523.99253.5795249.77.56274.1388824.43887.5696249.77.16275.6887725.98877.1697249.96.87277.6475527.74756.8798250.67.68277.7091127.10917.6899252.49.43279.3218826.92189.43100254.711.21276.91622.21611.21101254.711277.7049923.004911102253.79.11276.6031122.90319.11103252.97.76273.4918820.59187.76104252.17.93273.8531121.75317.93105251.65.54272.12420.5245.54表2.5管網(wǎng)平差管管段編號管徑長度阻力系數(shù)起始節(jié)點終止節(jié)點流量流速水力坡度水頭損失10.25200.21101231.57510.64322.5130.503120.423411016134.2071.0683.71530.869431.2309.51101201183.32881.04630.99350.307540.1234110234.62510.58896.21131.453550.1247.6110342.86660.3652.5610.634160.1200.211036-4.30150.54775.4305-1.087270.1261.8110451.05660.13450.40330.105680.1200.211047-4.290.54625.4038-1.081890.1200.211058-1.93340.24621.235-0.2472100.4247.611067110.281330.87762.58260.6395110.1309.51106194.20420.53535.20521.611續(xù)表1120.35261.81107892.75130.9643.59130.9402130.35255.81108971.28110.74092.20540.5641140.1309.51108175.29680.67447.98472.4713150.25284.111091040.03070.81553.89981.1079160.1309.51109165.95050.75769.90493.0656170.293110101126.06020.82955.2210.4856180.1309.511010155.48050.69788.50512.6323190.1415.611011143.97430.5064.69051.9494200.1606.211011126.59590.839811.9867.2659210.1309.51101213-5.40410.68818.2869-2.5648220.15328.81101314-15.779220.89298.369-2.7517230.1206.51101328-6.02490.767110.1356-2.093240.1370.411014151.22810.15640.53290.1974250.2206.51101427-25.6330.81595.0636-1.0456260.1284.11101516-2.75210.35042.3748-0.6747270.1206.51101526-5.25940.66967.8805-1.6273280.1255.81101617-3.89970.49654.5287-1.1584290.1206.51101625-6.14190.78210.5031-2.1689300.1257.81101718-4.16560.53045.117-1.3192310.1206.51101724-5.89730.75099.7418-2.0117320.1251.61101819-3.8650.49214.4544-1.1207330.1206.51101823-6.84050.87112.8223-2.6478340.12341101920-5.74670.73179.2859-2.1729350.1206.51101922-5.47420.6978.487-1.7526361.2206.511020211172.82111.0370.97720.2018371.223411021221144.50551.0120.9340.2185380.2318.8110213720.44590.65083.33131.062391.2251.611022231119.26440.98960.89620.2255400.1318.811022365.7570.7339.31672.9702410.25257.8110232457.32971.16797.58461.9553續(xù)表2421318.811023351040.18441.32441.90140.6062430.25255.8110242540.10960.81713.91411.0012440.1318.81102434-3.00730.38292.7987-0.8922450.2284.1110252623.41170.74524.28111.2163460.1318.81102533-3.16390.40283.0747-0.9802470.1370.411026271.75990.22411.03750.3843480.1318.81102632-3.81750.48614.3536-1.3879490.1328.811027284.19470.53415.18361.7044500.3318.81102731-49.737880.70362.3992-0.7649510.15318.81102830-12.230220.69215.2209-1.6644520.25283.81102930-29.476660.60052.2125-0.6279530.132011029464.14670.5285.07411.6237540.35328.81103031-75.409110.78382.4477-0.8048550.15320110304514.07240.79636.77012.1664560.45328.81103132-164.84331.03653.0637-1.0074570.15320110314413.7560.77846.49092.0771580.5284.11103233-208.981.06432.846-0.8085590.15320110324315.30960.86637.91362.5323600.5255.81103334-236.19331.20293.5702-0.9133610.132011033426.0090.765110.08613.2275620.6257.81103435-261.37660.92441.7724-0.4569630.132011034413.96550.50494.67121.4948640.1251.611035365.47860.69768.49972.1385650.93201103540754.9991.18681.75460.5615660.12341103637-5.68040.72339.0885-2.12676701.3440.17110.6297-0.2015680.132011037384.63550.59026.23741.996690.12341103839-0.90450.11520.3024-0.0708700.15251.61103940-12.538440.70955.4672-1.3755710.15257.8110404112.44590.70435.39281.3903續(xù)表3720.9488.61104052720.424771.13241.60870.786730.1255.811041426.09150.775610.3442.646740.1284.111042431.05050.13370.3990.1134750.1370.411043442.14010.27251.49050.5521760.1328.811044452.9610.3772.71940.8941770.1488.61104455-1.79490.22851.0761-0.5258780.128.3811045463.12330.39773.00210.0852790.1237.21104748-6.06150.771810.2498-2.4313800.1233.111047682.49150.31721.97520.4604810.15282.41104849-13.008330.73615.8527-1.6528820.1233.11104867-0.61310.07810.1472-0.0343830.4228.81104950-122.81880.97743.1526-0.7213840.4233.11104966102.649880.81692.26140.5271850.5259.81105051-202.71.03232.6896-0.6988860.35233.1110506573.01240.75892.30560.5374870.5283.71105152-224.15551.14163.2405-0.9193880.15233.1110516413.77480.77956.50731.5169890.6410.71105253347.867111.23033.00941.236900.4233.11105263138.9721.10593.96330.9238910.6376.91105354298.477441.05562.26630.8542920.25233.1110536238.17990.77783.57250.8328930.45380.61105455174.792331.0993.4151.2997940.4233.11105461112.685110.89672.68790.6265950.4298.11105556109.381990.87042.54380.7583960.3233.1110556054.50560.77112.84240.6626970.35314.5110565786.96610.90393.18751.0025980.15233.1110565915.39590.87127.99631.8639990.3557110575876.67260.79692.52420.14391000.1327.311057815.97350.76069.97623.26521010.1267.111058592.94160.37452.68660.7176續(xù)表41020.35216.4110587967.0210.69661.96750.42581030.1298.11105960-4.76890.60726.5739-1.95971040.15216.4110597811.33650.64154.53640.98171050.1380.61106061-3.39820.43273.5097-1.33581060.25216.4110607734.90490.71113.02580.65481070.1376.91106162-2.31150.29431.7192-0.6481080.35216.4110617689.59840.93133.36850.72891090.1410.71106263-3.00080.38212.7877-1.14491100.15216.4110627516.44920.93089.0391.9561110.1283.711063644.25870.54225.33081.51241120.4216.41106374112.862550.89812.69570.58341130.1259.81106465-1.79860.2291.0803-0.28071140.1216.411064734.47210.56945.83611.26291150.1228.211065663.18670.40573.11580.7111160.3216.4110657254.28710.7682.82140.61051170.2282.4110666722.15270.70513.86451.09131180.35216.4110667169.36370.7212.09680.45371190.1237.211067686.6990.852912.33552.9261200.1216.411067701.72060.21910.9950.21531210.1216.411068692.05050.26111.37710.2981220.1237.21106970-6.80060.865912.6841-3.00871230.122611069934.36110.55535.57081.2591240.25282.41107071-34.870770.71043.0203-0.85291250.15226110709214.68070.83087.3221.65481260.1228.21107172-2.78560.35472.4286-0.55421270.2226110719122.95860.73084.12890.93311280.1259.811072733.44070.43813.59140.9331290.25226110729034.32080.69922.93270.66281300.1283.71107374-5.20350.66257.7263-2.19191310.12261107389-2.24360.28571.6269-0.3677續(xù)表51320.1410.711074754.59230.58476.12992.51761330.35226110748884.21670.87533.00340.67881340.1376.91107576-2.17550.2771.5366-0.57911350.122611075870.7970.10150.23930.05411360.1380.611076773.2950.41953.31481.26161370.35226110768660.77780.63171.64160.3711380.1298.111077785.18320.65997.67052.28661390.15226110778514.78670.83687.42031.6771400.1267.11107879-4.00960.51054.7679-1.27351410.122611078844.99930.63657.1741.62131420.127811079806.34110.807411.14283.09771430.25226110798341.95020.85464.25320.96121440.1100.71108081-3.64350.46393.9933-0.40211450.122611080824.02470.51244.80111.08511460.12781108283-6.47670.824611.5882-3.22151470.1215.3110821050.91140.1160.30670.0661480.1267.111083845.02380.63977.23931.93361490.15215.31108310414.58970.82567.23821.55841500.1298.11108485-5.11470.65127.4837-2.23091510.1215.311084103-0.39220.04990.0643-0.01391520.1380.61108586-4.83610.61576.7462-2.56761530.1215.311085102-3.72190.47394.1537-0.89431540.1376.911086871.41820.18060.69570.26221550.25215.31108610132.52360.66262.65460.57151560.2410.71108788-24.363220.77554.6089-1.89291570.1215.3110871004.15840.52955.10071.09821580.2283.7110888922.68340.7224.03781.14551590.2215.3110889918.32010.58312.71840.58531600.1259.811089901.01580.12930.3750.09741610.1215.311089984.0640.51754.88851.0525續(xù)表61620.15228.8110909110.01180.56663.60380.82461630.15215.3110909711.58480.65564.72211.01671640.15282.4110919212.67220.71715.57571.57461650.1215.311091965.97820.76129.99052.1511660.1237.211092936.30190.802411.01552.61291670.1215.311092955.9410.75649.87562.12621680.1215.311093940.8630.10990.27730.05971690.1237.21109495-2.7070.34472.3033-0.54631700.1282.41109596-4.3260.55085.4881-1.54981710.1228.21109697-5.50790.70138.5839-1.95881720.1259.81109798-0.79310.1010.2371-0.06161730.1283.71109899-4.4090.56145.6847-1.61271740.1410.7110991004.4810.57055.85782.40581750.1376.9110100101-2.57060.32732.093-0.78881760.2380.611010110218.9530.60332.89481.10181770.1298.11101021036.12110.779410.43733.11131780.1267.1110103104-2.03110.25861.353-0.36141790.12781101041054.62860.58936.221.72922.3二級泵站的的設(shè)計水泵選型的原則水泵選型是根據(jù)所所需設(shè)計流量量與設(shè)計揚程程選泵，所選選水泵應(yīng)滿足足以下要求：：（1）在滿足設(shè)計流量與與設(shè)計揚程的的情況下，應(yīng)應(yīng)適應(yīng)工況變變化，即工況況變化時，揚揚程浪費較小小；（2）在長期運行中平均均工作效率高高，既是選用用效率較高的的泵，運行時時能使工況點點落在高效段段；（3）水泵汽蝕性能良好好，即選用允允許吸上真空空高度HS較大，必須須汽蝕余量[[NPSH]]r較小的泵；；（4）所配電動機總裝機機容量小，避避免“小馬拉大車”；（5）結(jié)構(gòu)合理，便于安安裝、維護(hù)和和管理；（6）泵站投資小。二級泵站流量計算算二級泵站的計算流流量與管網(wǎng)只只能夠是否設(shè)設(shè)置水塔或高高地水池有關(guān)關(guān)。當(dāng)管網(wǎng)內(nèi)內(nèi)不設(shè)水塔時時，任何小時時的二級泵站站供水量應(yīng)等等于用水量，這這事二級泵站站應(yīng)滿足最高高日最高時的的水量要求，否否則就會存在在不同程度的的供水不足的的現(xiàn)象。因為為用水量每日日每小時都在在變化。故在在本設(shè)計題目目中流量為11362.776L/s。二級泵站揚程的確確定在本設(shè)計中沒有水水塔，水泵的的凈揚程等于于管網(wǎng)控制點點的水壓標(biāo)高高與清水池最最低水位之間間的高程差，管管網(wǎng)控制點88在該縣城北北面，其地面面標(biāo)高為2553m，清水水池最低水面面標(biāo)高為2552.8m，最最小服務(wù)水頭頭為20m，水損損取1—20—21—23—35—40—52—63—74—88，安全水頭頭取2m，吸水管管和泵房內(nèi)的的水頭損失為為2m，清水池池水深取5m。從泵站到節(jié)點1的的輸水管有2條，每條輸輸水管的長度度為321..6m每條輸輸水管輸送水水的流量為,,選擇800mmm管徑，其其水頭損失為為:。則水泵揚程：水泵校核消防時的管網(wǎng)校核核，是以最高高時確定管徑徑來進(jìn)行的，按按照最高用水水時另外增加加消防設(shè)施時時的流量進(jìn)行行流量分配，在在節(jié)點88（控制點）和和節(jié)點9各加45L/s的消防用水水，算出各管管段消防時的的流量和水頭頭損失。消防時控制點888的服務(wù)水頭為10m，水損損取1—20—21—23—35—40—52—63—74—88，吸水管和和泵房內(nèi)的水水頭損失為22m，則消防防時的水泵揚揚程為：所以滿足要求,故故不需要設(shè)置置消防泵。消防校核后各節(jié)點點的自由水頭頭和各管段的的水頭損失見見表2.6和表2.7。表2.6消防校核自自由水頭編號地面標(biāo)高已知水壓已知流量節(jié)點水壓自由水頭節(jié)點流量1254.828528530.2-1439.1112254.926.95284.4704429.570426.953254.76.06282.4593327.75936.064254.76.1281.3094426.60946.15254.52.99280.7972226.29722.996254.815.42283.6419928.841915.427254.613.24282.5532227.953213.248253.914.24280.8183326.918314.249252.970.3279.5533326.653370.310252.58.49278.6594426.15948.4911252.415.49278.2643325.864315.4912251.512272.0175520.5175121325116.4275.05524.05516.41425112.6277.8393326.839312.615252.314.72277.2952224.995214.721625313.24277.8788824.878813.2417253.611.46279.2616625.661611.4618254.96.54281.0081126.10816.5419254.611.56282.2727727.672711.5620254.74.76284.6667729.96674.7621254.87.87284.44829.6487.8722254.514.01284.2107729.710714.01續(xù)表123255.214.91283.9655528.765514.9124253.214.33281.86428.66414.332525313.72280.7906627.790613.722625320.21279.5083326.508320.2127250.721.67279.1415528.441521.672825210.4277.4236625.423610.42925625.33278.5618822.561825.3330252.819.63279.1898826.389819.6331250.425.94280.0026629.602625.943225225.01281.0527729.052725.0133253.218.04281.8902228.690218.043425418.21282.83428.83418.2135254.718.33283.3054428.605418.3336254.718.26281.1821126.482118.2637254.610.13283.3683328.768310.13382545.54281.2932227.29325.543925310.29281.3504428.350410.2940252.29.59282.68130.4819.5941252.810.32281.29828.49810.324225311.05278.6329925.632911.054325314.22278.5086625.508614.224425314.73277.9118824.911814.734525213.91277.0218825.021813.9146254.97.27276.9367722.03677.2747250.53.57275.2324424.73243.57482517.56277.6821126.68217.5649250.77.16279.3518828.65187.1650250.86.87280.0918829.29186.87512507.68280.8296630.82967.6852249.59.43281.8019932.30199.43續(xù)表253249.711.21280.5329930.832911.2154250.411279.6626629.26261155250.89.11278.3601127.56019.11562507.02277.6005527.60057.0257251.14.32276.5963325.49634.3258251.46.71276.4521125.05216.7159252.211.77275.7323323.532311.7760252.618.23277.6919925.091918.2361252.322279.0068826.70682262251.922.42279.6181127.718122.4263252.118.85280.4317728.331718.8564252.215.36279.1347726.934715.3665251.613.74279.49427.89413.7466251.314.32278.8089927.508914.326725113.12277.7117726.711713.1268250.67.14274.7635524.16357.1469249.74.49274.4513324.75134.4970249.715.11277.4766627.776615.1171250.814.32278.3367727.536714.3272251.713.74278.7946627.094613.7473252.615.36277.4407724.840715.3674253.118.85279.48426.38418.857525322.42277.3063324.306322.4276253.123.35278.2356625.135623.3577253.218.23277.0294423.829418.2378252.515.53274.7468822.246815.5379252.214.72276.0254423.825414.7280251.35.96272.9258821.62585.9681251.12.33273.3284422.22842.3382251.69.59271.8383320.23839.59續(xù)表383252.215.86275.0615522.861515.8684252.715.53273.1088820.408815.5385253.318.23275.3213322.021318.2386254.222277.8392223.63922287254.822.42276.8104422.010422.4288252.863.85278.20525.40563.8589252.115.36277.5088825.408815.3690250.913.74277.99627.09613.7491250.214.32277.3204427.120414.3292250.115.11275.7756625.675615.1193249.79.8273.1532223.45329.894249.63.57273.0821123.48213.5795249.77.56273.5971123.89717.5696249.77.16275.0404425.34047.1697249.96.87276.7723326.87236.8798250.67.68276.7124426.11247.6899252.49.43277.7109925.31099.43100254.711.21275.8617721.161711.21101254.711277.2441122.544111102253.79.11276.1631122.46319.11103252.97.76273.1207720.22077.76104252.17.93273.4961121.39617.93105251.65.54271.7714420.17145.54表2.7管段水頭頭損失編號管徑長度阻力系數(shù)起始節(jié)點終止節(jié)點流量流速水力坡度水頭損失10.25200.21101232.46160.66132.64530.529620.423411016170.7571.35885.80381.358131.2309.51101201235.89111.09281.07680.333340.1234110235.51160.70188.59462.0111續(xù)表150.1247.6110343.9530.50334.6441.149860.1200.211036-4.50140.57315.9072-1.182670.1261.8110452.47870.31561.95650.512280.1200.211047-4.62570.5896.2129-1.243890.1200.211058-0.51130.06510.1052-0.0211100.4247.611067146.984991.16974.39681.0887110.1309.51106193.85060.49034.42381.3692120.35261.811078129.119111.3426.62711.735130.35255.811089110.240991.14584.94531.265140.1309.51108174.1270.52555.02961.5567150.25284.111091035.