四川大學(xué)本科生畢業(yè)設(shè)計(jì)甲市給水工程設(shè)計(jì)目錄第一章設(shè)計(jì)用水量 第一章設(shè)計(jì)用水量1.1居民生活用水量1.1.1設(shè)計(jì)參數(shù)選擇居民生活用水定額和綜合生活用水定額應(yīng)根據(jù)當(dāng)?shù)貒窠?jīng)濟(jì)和社會(huì)發(fā)展、水資源充沛程度、用水習(xí)慣，在現(xiàn)有用水定額基礎(chǔ)上，結(jié)合城市總體規(guī)劃和給水專業(yè)規(guī)劃，本著節(jié)約用水的原則，綜合分析確定。當(dāng)缺乏實(shí)際用水資料情況下，可按表1-1和表1-2選用。表1-1：民生活用水定額［L/（cap·d）］城市規(guī)模特大城市大城市中、小城市用水情況分區(qū)最高日平均日最高日平均日最高日平均日一180～270140～210160～250120～190140～230100～170二140～200110～160120～18090～140100～16070～120三140～180110～150120～16090～130100～14070～110表1-2：合生活用水定額［L/（cap·d）］城市規(guī)模特大城市大城市中、小城市用水情況分區(qū)最高日平均日最高日平均日最高日平均日一260～410210～340240～390190～310220～370170～280二190～280150～240170～260130～210150～240110～180三170～270140～230150～250120～200130～230100～170注：(1)特大城市指：市區(qū)和近郊區(qū)非農(nóng)業(yè)人口100萬及以上的城市；大城市指：市區(qū)和近郊區(qū)非農(nóng)業(yè)人口50萬及以上，不滿100萬的城市；中、小城市指：市區(qū)和近郊區(qū)非農(nóng)業(yè)人口不滿50萬的城市。(2)一區(qū)包括：湖北、湖南、江西、浙江、福建、廣東、廣西、海南、上海、江蘇、安徽、重慶；二區(qū)包括：四川、貴州、云南、黑龍江、吉林、遼寧、北京、天津、河北、山西、河南、山東、寧夏、陜西、內(nèi)蒙古河套以東和甘肅黃河以東的地區(qū)；三區(qū)包括：新疆、青海、西藏、內(nèi)蒙古河套以西和甘肅黃河以西的地區(qū)。根據(jù)甲市總體規(guī)劃及給水工程規(guī)劃，參照該縣城目前的人均生活用水指標(biāo)，并結(jié)合《室外給水設(shè)計(jì)規(guī)范（GB50013-2006）》，考慮甲市的居民生活水平和節(jié)水意識(shí)，確定居民生活用水定額q近期取120L/（cap·d）；遠(yuǎn)期取140L/（cap·d）。（注：近期取10年以內(nèi)，遠(yuǎn)期取10年至20年以內(nèi)。）1.1.2居民生活用水量計(jì)算居民最高日生活用水量計(jì)算如下：近期：m3/d遠(yuǎn)期：m3/d1.2工業(yè)企業(yè)用水量1.2.1設(shè)計(jì)參數(shù)選擇機(jī)車修理廠（三班制）的車間總?cè)藬?shù)為人，其余各工業(yè)企業(yè)（兩班制）的車間總?cè)藬?shù)為800人。高溫車間工人數(shù)占總?cè)藬?shù)20%，普通車間占總?cè)藬?shù)80%。高溫車間工人全部進(jìn)行淋浴，普通車間占其工人數(shù)的40%進(jìn)行淋浴。職工生活用水標(biāo)準(zhǔn)：高溫車間按每人每班35L，一般車間按每人每班25L算。職工淋浴用水標(biāo)準(zhǔn)：高溫車間按每人每班60L，一般車間按每人每班40L算。1.2.2工業(yè)企業(yè)用水量計(jì)算工業(yè)企業(yè)生活用水量機(jī)車修理廠生活用水量機(jī)車修理廠普通車間工作人數(shù)：人機(jī)車修理廠高溫車間淋浴人數(shù)：人機(jī)車修理廠普通車間淋浴人數(shù)：人機(jī)車修理廠工業(yè)企業(yè)職工的生活用水量為：m3/d機(jī)車修理廠工業(yè)企業(yè)職工的淋浴用水量為：m3/d其余各工業(yè)企業(yè)生活用水量其余各工業(yè)企業(yè)高溫車間工作人數(shù)：人其余各工業(yè)企業(yè)普通車間工作人數(shù)：人其余各工業(yè)企業(yè)高溫車間淋浴人數(shù)：人其余各工業(yè)企業(yè)普通車間淋浴人數(shù)：人其余各工業(yè)企業(yè)職工的生活用水量為：m3/d其余各工業(yè)企業(yè)職工的淋浴用水量為：m3/d工業(yè)企業(yè)生產(chǎn)用水量由已知資料知各工業(yè)企業(yè)（包括機(jī)車修理廠）的生產(chǎn)用水量為：m3/d工業(yè)企業(yè)的用水量m3/d1.3市政用水量根據(jù)道路實(shí)際情況每天澆水2次，取居民生活用水量和工業(yè)企業(yè)用水量的5%。因此，市政用水量m3/d。1.4公共建筑用水量由已知資料可知公共建筑用水量=1531m3/d1.5未預(yù)見和管網(wǎng)漏失水量據(jù)《室外給水設(shè)計(jì)規(guī)范》（GB50013-2006），未預(yù)見水量取Q1、Q2、Q3、Q4水量之和的10%~12%計(jì)算，本設(shè)計(jì)取10%；管網(wǎng)漏失水量取為Q1、Q2、Q3、Q4以及未預(yù)見水量之和的8%~12%計(jì)算，本設(shè)計(jì)取10%?！?789.53m3/d≈1968.48m3/d則未預(yù)見和管網(wǎng)漏失水量m3/d。1.6用水量變化曲線1.6.1編制最高日逐時(shí)用水量變化表居民生活用水量按原始資料中給定的逐時(shí)變化系數(shù)確定每一時(shí)段的用水量；工業(yè)企業(yè)內(nèi)人員生活用水量和淋浴用水量可按：一般車間采用每人每班25Ｌ，高溫車間采用每人每班35Ｌ；三班制沐浴用水選擇在6~7、14~15、22~23點(diǎn)進(jìn)行，兩班制沐浴用水選擇在14~15、22~23點(diǎn)進(jìn)行；市政用水選擇在5~7、19~21點(diǎn)進(jìn)行。近期城市最高日用水量Qd=Q1+Q2+Q3+Q4+Q5=12000+3563.6+800.68+1531+3758.01=21653.29m3/d取Qd=21660m3/d。遠(yuǎn)期城市最高日用水量=Q1+Q2+Q3+Q4+Q5=21000+3563.6+800.68+1531+5648=32543.29m3/d取=32545m3/d。從表中可以看出：最高時(shí)用水量在19~20時(shí)，Qhmax=1213.13m3/h，占全天用水量的5.60%。而平均時(shí)用水量占全天用水量的4.17%，因此，時(shí)變化系數(shù)為：Kh=5.60/4.17=1.34詳細(xì)計(jì)算過程見表1-3。

表1-3：最高日生活用水量計(jì)算表時(shí)間居住區(qū)生活用水機(jī)車修理廠用水（三班制）其余各工業(yè)企業(yè)用水（兩班制）市政用水公共建筑用水時(shí)用水量未預(yù)見和管網(wǎng)漏水總的時(shí)用水量占日用水量（%）水量（m3）高溫車間生活用水一般車間生活用水淋浴用水生產(chǎn)用水高溫車間生活用水一般車間生活用水淋浴用水生產(chǎn)用水變化系數(shù)m3變化系數(shù)m3m3m3變化系數(shù)m3變化系數(shù)m3m3m3m3m3m3%m3m3%0~12.52302.412.50.3512.5183.3338.58425.662.3889.39515.052.381~22.07248.412.50.3512.5183.3331.69364.782.0476.60441.382.042~31.87224.412.50.3512.5183.3328.63337.711.8970.92408.631.893~42.22266.412.50.3512.5183.3333.99385.072.1580.87465.942.154~52.65318.012.50.3512.5183.3340.57443.252.4893.08536.342.485~63.95474.012.50.3512.5183.33200.1760.47819.334.58172.06991.394.586~74.84580.812.50.3512.519.9283.33200.1774.10949.675.31199.431149.115.317~85.26631.212.50.3512.5183.3312.50.3512.5191.2580.53889.014.97186.691075.714.978~95.35642.012.50.3512.5183.3312.50.3512.5191.2581.91901.195.04189.251090.445.049~105.45654.012.50.3512.5183.3312.50.3512.5191.2583.44914.725.11192.091106.815.1110~115.58669.612.50.3512.5183.3312.50.3512.5191.2585.43932.315.21195.791128.105.2111~125.02602.412.50.3512.5183.3312.50.3512.5191.2576.86856.544.79179.871036.414.7912~134.66559.212.50.3512.5183.3312.50.3512.5191.2571.34807.834.51169.64977.474.5113~144.87584.412.50.3512.5183.3312.50.3512.5191.2574.56836.244.67175.611011.854.6714~154.81577.212.50.3512.519.9283.3312.50.3512.519.9291.2573.64847.964.74178.071026.044.74續(xù)表1時(shí)間居住區(qū)生活用水機(jī)車修理廠用水（三班制）其余各工業(yè)企業(yè)用水（兩班制）市政用水公共建筑用水時(shí)用水量未預(yù)見和管網(wǎng)漏水總的時(shí)用水量占日用水量（%）水量（m3）高溫車間生活用水一般車間生活用水淋浴用水生產(chǎn)用水高溫車間生活用水一般車間生活用水淋浴用水生產(chǎn)用水變化系數(shù)m3變化系數(shù)m3m3m3變化系數(shù)m3變化系數(shù)m3m3m3m3m3m3%m3m3%15~165.07608.412.50.3512.5183.3312.50.3512.5191.2577.62863.314.82181.291044.604.8216~175.34640.812.50.3512.5183.3312.50.3512.5191.2581.76899.845.03188.971088.805.0317~185.42650.412.50.3512.5183.3312.50.3512.5191.2582.98910.665.09191.241101.905.0918~195.10612.012.50.3512.5183.3312.50.3512.5191.2578.08867.364.85182.151049.514.8519~204.62554.412.50.3512.5183.3312.50.3512.5191.25200.1770.731002.595.60210.541213.135.6020~214.01481.212.50.3512.5183.3312.50.3512.5191.25200.1761.39920.055.14193.211113.265.1421~223.37404.412.50.3512.5183.3312.50.3512.5191.2551.59633.283.54132.99766.273.5422~233.12374.412.50.3512.519.9283.3312.50.3512.519.9291.2547.77619.293.46130.05749.343.4623~242.83339.612.50.3512.5183.3343.33467.612.6198.20565.812.61合計(jì)100120003008.403002429.7620002005.62001619.841460800.68153117895.281003758.0121653.291001.6.2繪制用水量變化曲線根據(jù)以上表格繪制用水量變化曲線如下圖1-1所示：1.7給水系統(tǒng)的流量計(jì)算1.7.1取水構(gòu)筑物、一級泵站流量計(jì)算取水構(gòu)筑物、一級泵站和水廠按最高日的平均時(shí)流量計(jì)算，即：Q=αQd/T，其中，α是水廠本身用水量的系數(shù)，一般在1.05~1.10之間，此處取1.05。T為一級泵站每天工作小時(shí)數(shù)，考慮到該水廠供水量較小，此水廠按一天三班制即24h均勻工作。因此，一級泵站的計(jì)算流量為Q=1.05×21660÷24=947.625m3/h。1.7.2二級泵站流量計(jì)算二級泵站、從泵站到管網(wǎng)的輸水管等的計(jì)算流量，應(yīng)按照用水量變化曲線和二泵站工作曲線確定。由上圖1~1可知，水泵工作情況分成兩級：從5時(shí)到21時(shí)，一組水泵運(yùn)轉(zhuǎn)，流量為最高日用水量的4.51%，即977.47m3/h；其余時(shí)間的水泵流量為最高日用水量的3.48%，即753.53m3/h。1.7.3清水池的容積計(jì)算考慮到水塔容積很大，造價(jià)較高，因此，本設(shè)計(jì)中僅設(shè)清水池，不設(shè)水塔。清水池中除了貯存調(diào)節(jié)用水以外，還存放消防用水和水廠生產(chǎn)用水，因此，清水池有效容積等于：式中——調(diào)節(jié)容積，m3；由清水池調(diào)節(jié)容積計(jì)算表知：m3；——消防貯存量，m3，按2h火災(zāi)延續(xù)時(shí)間計(jì)算，流量按40L/s計(jì)算，兩處同時(shí)失火；——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%；——安全貯量，m3取100m3。m3?？紤]到檢修時(shí)放空而不中斷供水，清水池為兩座，則每座清水池容積為W/2=2144.12m3，每座清水池容積取2145m3。清水池設(shè)計(jì)尺寸為B×L×H=13m×37m×4.8m，有效容積為13m×37m×4.5m，超高0.3m。表1-4：清水池調(diào)節(jié)容積計(jì)算表時(shí)間用水量（%）二泵站供水量（%）一泵站供水量（%）清水池調(diào)節(jié)容積（%）水塔調(diào)節(jié)容積（%）無水塔有水塔0~12.383.484.17-1.79-0.69-1.11~22.043.484.17-2.13-0.69-1.442~31.893.484.16-2.27-0.68-1.593~42.153.484.17-2.02-0.69-1.334~52.483.484.17-1.69-0.6905~64.584.514.160.420.350.076~75.314.514.171.140.340.87~84.974.514.170.80.340.468~95.044.514.160.880.350.539~105.114.514.170.940.340.610~115.214.514.171.040.340.711~124.794.514.160.630.350.2812~134.514.514.170.340.34013~144.674.514.170.50.340.16續(xù)表114~154.744.514.160.580.350.2315~164.824.514.170.650.340.3116~175.034.514.170.860.340.5217~185.094.514.160.930.350.5818~194.854.514.170.680.340.3419~205.64.514.171.430.341.0920~215.144.514.160.980.350.6321~223.543.484.17-0.63-0.690.0622~233.463.484.17-0.71-0.69-0.0223~242.613.484.16-1.55-0.68-0.87合計(jì)10010010011.45.57.36第二章地表水取水構(gòu)筑物2.1給水系統(tǒng)方案的比較和選擇2.1.1頻率曲線的繪制因白龍河水質(zhì)較好，除部分指標(biāo)偏高外，基本符合地表水的水質(zhì)標(biāo)準(zhǔn)，因此選擇白龍河水做水源。取水地點(diǎn)設(shè)在白龍河上游，因?yàn)樯嫌蔚墓I(yè)企業(yè)較少，水質(zhì)較好。地表水的水文、水質(zhì)資料詳見下表2-1、2-2。表2-1白龍河水位資料序號(hào)年份洪水位（m）枯水位（m）序號(hào)年份洪水位（m）枯水位（m）11958464.47460.04141971469.02459.921959465.37460.19151972465.58459.0131960467.32459.19161973468.2460.1241961466.37459.79171974466.52460.551962469.41460.83181975467458.5761963467.85461.28191976465.97459.3271964471.25460.62201977464.87458.9181965468.44460.09211978464.92459.391966465.7460.34221979464.68459.86101967463.61459.22231980466.22459.58111968466.9458.79241981465.02459.35121969470.04461.04251982467.06459.72131970467.54459.46261983465.93459.12注：斷流水位為456.00m表2-2白龍河水質(zhì)資料項(xiàng)目單位化驗(yàn)結(jié)果最高最低平均水溫℃18.54.815色度度1225渾濁度度5402＜200續(xù)表1項(xiàng)目單位化驗(yàn)結(jié)果pH值7.877.4細(xì)菌總數(shù)個(gè)/ml100448最高最低平均大腸菌群個(gè)/l＞3＞3＞3臭和味極微耗氧量mg/l1.640.25總硬度度195.04總固體mg/l2.5鐵mg/l0.30錳mg/l00氮化物mg/l0.050堿度度8揮發(fā)酚mg/l0.02根據(jù)上表計(jì)算河流百年一遇的洪枯水位。計(jì)算按經(jīng)驗(yàn)頻率曲線法：將多年的洪水位及洪水流量自大而小，枯水位及枯水流量自小而大排列成表；依次序?qū)γ恳涣髁炕蛩痪幪?hào)；依據(jù)公式P=m/(n+1)=100%計(jì)算頻率，見表2-3；以算得的頻率P為橫座標(biāo)，以其相應(yīng)的流量或水位為縱座標(biāo)，繪出頻率曲線圖。見圖2-1。2-3河流水位頻率表序號(hào)年份洪水位（m）頻率（%）序號(hào)年份枯水位（m）頻率（%）11964471.253.7011975458.573.7021969470.047.4121968458.797.4131962469.4111.1131977458.9111.1141971469.0214.8141972459.0114.8151965468.4418.5251983459.1218.5261973468.2022.2261960459.1922.2271963467.8525.9371967459.2225.9381970467.5429.6381978459.3029.6391960467.3233.3391976459.3233.33101982467.0637.04101981459.3537.04111975467.0040.74111970459.4640.74續(xù)表1序號(hào)年份洪水位（m）頻率（%）序號(hào)年份枯水位（m）頻率（%）121968466.9044.44121980459.5844.44131974466.524872483751.85141961459.7951.85151980466.2255.56151979459.8655.56161976465.9759.26161971459.9059.26171983465.9362.96171958460.0462.96181966465.7066.67181965460.0966.67191972465.5870.37191973460.1270.37201959465.3774.07201959460.1974.07211981465.0277.78211966460.3477.78221978464.9281.48221974460.5081.48231977464.8785.19231964460.6285.19241979464.6888.89241962460.8388.89251958464.4792.59251969461.0492.59261967463.6196.30261963461.282.1.2水源種類、取水地點(diǎn)、取水構(gòu)筑物類型的比較和選擇取水構(gòu)筑物位置的選擇，應(yīng)符合城市總體規(guī)劃的要求，在保證水質(zhì)的前提下，盡可能接近用水地點(diǎn)，以節(jié)省投資費(fèi)用，在取水位置的具體選擇時(shí)，還應(yīng)考慮水質(zhì)因素、河床及地形、污水排出口等的影響。根據(jù)已提供的水文地質(zhì)資料可知：白龍河水質(zhì)較好，含沙量低，河床穩(wěn)定，河岸平坦，枯水期岸邊水深足夠且主流離岸邊較近。綜合考慮以上情況及基建費(fèi)用，決定放棄采用河床式取水構(gòu)筑物，而采用岸邊式取水構(gòu)筑物。由洪枯水位曲線圖延伸可得到百年一遇即P=1%的洪水位為474.13m，P=97%的枯水位為458.53m。則距離鎖橋1750m的洪枯水位為：洪水位：474.13+1750×1.68‰=477.07m；枯水位：458.53+1750×1.65‰=461.42m。取水點(diǎn)的位置設(shè)在距觀察點(diǎn)1750m處的右岸邊。取水點(diǎn)處的河道斷面圖見圖2-2。2.2取水構(gòu)筑物的設(shè)計(jì)與計(jì)算2.2.1進(jìn)水間河流水位的變幅為477.07-461.42=15.65m＞6m。可以設(shè)置兩層進(jìn)水孔，以便洪水期取表層含沙量少的水。上層進(jìn)水孔的上緣設(shè)在洪水位以下1m，即476.07m，下層進(jìn)水孔的下緣高出河底0.5m，其上緣設(shè)在最低水位以下0.3m，即461.12m。進(jìn)水孔面積和格柵尺寸的計(jì)算格柵設(shè)在進(jìn)水間的進(jìn)水孔上，用來攔截水中粗大的漂浮物及魚類。格柵由金屬框架和柵條組成。設(shè)計(jì)流量Q’=21660m3/d，進(jìn)水孔設(shè)計(jì)流速取0.5m/s，柵條采用厚度s=10mm，柵條凈距采用b=50mm，格柵阻塞系數(shù)采用K2=0.75。柵條引起的面積減少系數(shù)為：Q=21660×(1+0.05)=22743m3/d=0.26m3/s，其中0.05為水廠自用水量。則進(jìn)水孔總面積為：m2進(jìn)水間橫向分成2格，則每個(gè)進(jìn)水口面積f=F0/2=0.84/2=0.42m2進(jìn)水孔尺寸采用：B1×H1=0.6m×0.8m格柵尺寸選用：B×H=600mm×800mm水流通過格柵的水頭損失采用0.1m。格網(wǎng)尺寸的計(jì)算：采用平板格網(wǎng)。過網(wǎng)流速采用v1=0.3m/s，網(wǎng)眼尺寸采用5×5mm，網(wǎng)絲直徑d=2mm。格網(wǎng)面積的減少系數(shù)為：格網(wǎng)阻塞系數(shù)采用K2=0.5，水流收縮系數(shù)采用ε=0.8。平面格網(wǎng)所需面積為：m2設(shè)置兩個(gè)格網(wǎng)，每個(gè)格網(wǎng)需要的面積為2.15m2。進(jìn)水部分尺寸為B1×H1=1100×2000mm，面積為2.20m2。平板格網(wǎng)尺寸選用B×H=1100×2000mm。水流通過格網(wǎng)的水頭損失采用0.15m。2.2.2排泥、啟閉及起吊設(shè)備由于白龍河水的多年平均含沙量為0.234kg/m3，含沙量較小，因此不需要設(shè)置排泥設(shè)備。在進(jìn)水間的進(jìn)水孔、格網(wǎng)和橫向隔墻的連通孔上設(shè)備閘閥、閘板等啟閉設(shè)備，以便在進(jìn)水間沖洗和設(shè)備檢修時(shí)使用。這類閘閥或閘板尺寸較大，采用平板閘門以減小所占空間。起吊設(shè)備設(shè)在進(jìn)水間上部的操作平臺(tái)上，用以起吊格柵、格網(wǎng)、閘板和其它設(shè)備。采用單軌吊車起吊。2.2.3泵房的布置泵房布置泵房平面開關(guān)有圓形、矩形、橢圓形、半圓形等。由于圓形受力條件好，且土建造價(jià)較經(jīng)濟(jì)，因此選擇圓形布置。泵房地面層的設(shè)計(jì)標(biāo)高本設(shè)計(jì)采用岸邊式取水構(gòu)筑物，故泵房地面層的設(shè)計(jì)標(biāo)高為最高水位加浪高再加0.5m，即477.07+0.5+0.2=477.77m(0.2m為浪高)泵房的起吊、通風(fēng)、交通和自控設(shè)施取水泵房內(nèi)的起吊設(shè)備有一級起吊和二級起吊兩種。本設(shè)計(jì)屬于中小型泵房，采用一級起吊即可，起吊設(shè)備有卷揚(yáng)機(jī)、單軌吊車、橋式吊車等。泵房的防滲和抗浮取水泵房的井壁，要求在水壓作用下不產(chǎn)生滲漏。井壁防滲主要在于混凝土的密實(shí)性，所以必須注意混凝土的抗?jié)B標(biāo)號(hào)和施工質(zhì)量。2.2.4水泵的參數(shù)水泵型號(hào)及臺(tái)數(shù)不宜過多，否則將增大泵房面積，增加封建造價(jià)。但水泵臺(tái)數(shù)過少，又不利于調(diào)度，故采用兩用一備。設(shè)計(jì)流量Q近期流量m3/h=0.26m3/s。遠(yuǎn)期流量m3/h=0.40m3/s。設(shè)計(jì)揚(yáng)程H水泵所需靜揚(yáng)程Hst水廠處凈化廠反應(yīng)池前配水井的水面標(biāo)高定為484.00m，則水泵所需靜揚(yáng)程Hst為：洪水位時(shí)：Hst=484.00-477.07=6.93m枯水位時(shí)：Hst=484.00-461.42=22.58m2）輸水干管中的水頭損失設(shè)采用兩條DN600鋼管并聯(lián)作為原水輸水干管，當(dāng)一條輸水管檢修時(shí)，另一條輸水管應(yīng)通過75%的設(shè)計(jì)流量（遠(yuǎn)期考慮），Q=0.75×1423.84=1067.88m3/h=0.297m3/s，查水力計(jì)算表得管內(nèi)流速v=1.01m/s，1000i=2.14，所以（式中1.1為包括局部損失而加大的系數(shù)）。泵站內(nèi)管路中的水頭損失hp粗估為3m則水泵設(shè)計(jì)揚(yáng)程為設(shè)計(jì)枯水位時(shí)，Hmax=26.58+0.47+3+2=32.05m設(shè)計(jì)洪水位時(shí)，Hmin=10.93+0.47+3+2=16.40m初選水泵和電機(jī)近期3臺(tái)S250-39A型水泵（Q=324m3/h~576m3/h，H=35.5m~25m）兩用一備。遠(yuǎn)期增加一臺(tái)同型號(hào)泵，三臺(tái)工作，一臺(tái)備用。采用S250-39A型水泵，其基本參數(shù)為：轉(zhuǎn)速n＝1450r/min，泵軸功率N=42.4~50.9kW，配電動(dòng)機(jī)功率為55kW，效率η＝74%~78%，汽蝕余量NPSH=3.2m，葉輪直徑D=338mm，泵重620kg。選用型號(hào)為Y250M-4電動(dòng)機(jī)，其基本參數(shù)為：所需電壓為380V，功率55千瓦，轉(zhuǎn)速1480轉(zhuǎn)/分，效率η=92.6%，重量393kg。機(jī)組尺寸的確定查水泵與電機(jī)樣本，計(jì)算出S250-39A型水泵機(jī)組基礎(chǔ)平面尺寸為1917.5×665mm。機(jī)組總重量W=Wp+Wm=393+620=1013kg=9927.4N基礎(chǔ)深度H可按下式計(jì)算：式中：L—基礎(chǔ)長度，L=2.0mB—基礎(chǔ)寬度，B=0.7m—基礎(chǔ)所用材料的容重，對于混凝土基礎(chǔ)，=23520N/m3故設(shè)泵房底板深度為1.20m，則基礎(chǔ)實(shí)際深度連同泵房底板在內(nèi)，應(yīng)為2.10m。吸水管路與壓水管路計(jì)算每臺(tái)泵有單獨(dú)的吸水管和壓水管吸水管已知m3/h=0.13m3/s采用DN450的鋼管，則v=0.80m/s，1000i=2.01。壓水管采用DN400的鋼管，則v=1.02m/s，1000i=3.68。.機(jī)組與管道布置為了布置緊湊，充分利用建筑面積，將四臺(tái)機(jī)組交錯(cuò)并列布置成兩排，兩臺(tái)為正常轉(zhuǎn)向，兩臺(tái)為反常轉(zhuǎn)向。每臺(tái)水泵有單獨(dú)的吸水管，壓水管引出泵房后兩兩連接起來。水泵出水管上設(shè)有蝶閥，吸水管上設(shè)手動(dòng)閘板閘閥。為了減小泵房建筑面積，閘閥切換井設(shè)在泵房外面，兩條DN600的輸水干管用蝶閥連接起來，每條輸水管上各設(shè)切換用的蝶閥一個(gè)。2.2.5吸水管路和壓水管路中水頭損失的計(jì)算取一條最不利線路，從吸水口到輸水干管上切換閘閥止為計(jì)算線路圖2-3所示。圖2-3吸壓水管路水頭損失計(jì)算線路圖吸水管路中水頭損失=0.0784m式中—吸水管進(jìn)口局部阻力系數(shù)，=0.75；—DN450閘閥局部阻力系數(shù)，按開啟度，=0.15；—DN450鋼制90°彎頭局部阻力系數(shù)，=1.01；—DN450×350偏心漸縮管局部阻力系數(shù)，=0.18；故壓水管路中水頭損失∑hd=（0.44+0.71+2.32+16.60+3.03）×10-3×3.68+（0.89+1.71+0.99）×10-3×1.72=0.0912m=0.4163m式中—DN300×400漸放管局部阻力系數(shù)，=0.13；—DN400鋼制90°彎頭，=0.9；—DN400止回閥，=2.5；—DN400蝶閥，=0.15；—DN400×600漸放管，=0.26；—DN600鋼制斜三通，=0.5；—DN600鋼制正三通，=1.5；—DN600蝶閥，=0.15；故從泵吸水口到輸水干管上切換閘閥的全部水頭損失為：因此，泵的實(shí)際揚(yáng)程為：設(shè)計(jì)枯水位時(shí)，Hmax=26.58+0.47+0.60+2=29.65m設(shè)計(jì)洪水位時(shí)，Hmin=10.93+0.47+0.60+2=14.00m由此可見，初選的泵機(jī)組符合要求。2.2.6水泵安裝高度的確定和泵房筒體高度計(jì)算為了便于用沉井法施工，將泵房機(jī)器間底板放在與吸水間底板同一標(biāo)高，因而水泵為自灌式工作，所以水泵的安裝高度小于其允許吸上真空高度，無須計(jì)算。已知枯水位標(biāo)高為461.42m，考慮格柵0.1m的水頭損失，則進(jìn)水間的最低動(dòng)水位標(biāo)高為461.42-0.1=461.32m?？紤]格網(wǎng)0.15m的水頭損失，則吸水間最低動(dòng)水位標(biāo)高為461.32-0.15=461.17m。為保證吸水管的正常吸水，取吸水管的中心標(biāo)高為459.67m（吸水管上緣的淹沒深度為461.17-459.67-0.45/2=1.275m）。取吸水管下緣距吸水間底板0.7m，則吸水間底板標(biāo)高為459.67-（0.45/2+0.7）=458.745m。操作平臺(tái)標(biāo)高為477.77m，故泵房筒體高度為：H=477.77-458.745=19.03m。2.2.7附屬設(shè)備的選擇起重設(shè)備最大起重量為S250-39A水泵的重量為Wm=620kg，最大起吊高度為19.03+2.0=21.03m(其中2.00是考慮操作平臺(tái)上汽車的高度)。為此，選用環(huán)形吊車(定制，起重量1T，雙梁，跨度13.0m，CDi1-24D電動(dòng)葫蘆，起吊高度24m)。引水設(shè)備水泵系自灌式工作，不需引水設(shè)備。排水設(shè)備由于泵房較深，，故采用電動(dòng)水泵排水。沿泵房內(nèi)壁設(shè)排水溝，將水匯集到集水坑內(nèi)，然后用泵抽回到吸水間去。取水泵房的排水量一般按20-40m3/h考慮，排水泵的靜揚(yáng)程按16.6m計(jì)，水頭損失大約3m，故總揚(yáng)程在16.6+3=19.6m左右，可選用IS65-50-160A型離心泵（Q=15~28/h，H=27~22m，N=3Kw，n=2900r/min）兩臺(tái)，一臺(tái)工作，一臺(tái)備用，配套電機(jī)為Y100L-2。通風(fēng)設(shè)備由于與水泵配套的電機(jī)為水冷式，無需專用通風(fēng)設(shè)備進(jìn)行冷卻，但由于泵房簡體較深，仍選用風(fēng)機(jī)進(jìn)行換氣通風(fēng)。選用兩臺(tái)T35-11型軸流風(fēng)機(jī)（葉輪直徑700mm，轉(zhuǎn)速960r/min，葉片角度15°，風(fēng)量10127m3/h，風(fēng)壓90Pa，配套電機(jī)YSF-8026，N=0.37KW）。計(jì)量設(shè)備在凈化場的送水泵站內(nèi)安裝電磁流量計(jì)統(tǒng)一計(jì)量，故本泵站內(nèi)不再設(shè)計(jì)量設(shè)備。2.2.8泵房建筑高度的確定泵房筒體高度已知為19.03m，操作平臺(tái)以上的建筑高度，根據(jù)起重設(shè)備及起吊高度、電梯井機(jī)房的高度、采光及通風(fēng)的要求，吊車梁底板到操作平臺(tái)樓板6.00m，從平臺(tái)樓板到房頂凈高為8.00m。2.2.9泵房平面尺寸的確定根據(jù)泵機(jī)組、吸水與壓水管道的布置條件以及排水泵機(jī)組和通風(fēng)機(jī)等附屬設(shè)備的設(shè)置情況，從給水排水設(shè)計(jì)手冊中查出有關(guān)設(shè)備和管道配件的尺寸，通過計(jì)算，求得泵房內(nèi)徑為12.5m。輸配水工程的設(shè)計(jì)計(jì)算3.1輸配水管網(wǎng)設(shè)計(jì)與計(jì)算3.1.1管網(wǎng)布置方案管網(wǎng)定線應(yīng)注意一下原則：輸配水管線路應(yīng)盡量做到線路短，起伏小，土方工程量小，造價(jià)經(jīng)濟(jì)，少占用農(nóng)田或不占用農(nóng)田；輸水管線走向和位置應(yīng)符合城市和工業(yè)企業(yè)的規(guī)劃要求，并盡可能沿線有道路或規(guī)劃道路敷設(shè)，以利于施工和維護(hù)；輸配水管線應(yīng)盡量避免穿越河谷、山背、沼澤、重要鐵路和泄洪地區(qū)，并注意避開滑坡、易發(fā)生泥石流河高腐蝕性土壤地區(qū)；輸配水管線應(yīng)充分利用水位高差，當(dāng)條件許可時(shí)優(yōu)先考慮近、遠(yuǎn)期和分期實(shí)施的可能。根據(jù)以上原則，布置兩套方案，進(jìn)行技術(shù)、經(jīng)濟(jì)、安全性比較。管網(wǎng)布置方案如下圖3-1和3-2所示。圖3-1方案一管網(wǎng)布置圖3-2方案二管網(wǎng)布置3.1.2管網(wǎng)平差計(jì)算3.1.2.1方案一反算平差基本數(shù)據(jù)平差類型：反算水源壓力。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-1：節(jié)點(diǎn)參數(shù)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)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)1-336.981480516.79536.7951116.714474.37513.71439.344225.169477516.09939.0991238.03471.94514.16142.221334.883473.3515.33642.0361334.339476.78515.43238.652415.51473.9514.61440.7141420.469476.05514.69838.648512.043471.5513.93342.4331522.612486.31514.312863.247470513.69343.6931614.31475.36513.98138.621713.591469.5513.35543.8551712.33474514.0440.04829.772471.5512.85941.3591819.978474.38513.4739.0996.553472.5512.72440.224196.944479516.6137.611010.487473.5513.16639.666管道參數(shù)表3-2：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~19450497.979.4130.4991.0270.5112~1700768.9250.6240.6220.9050.6963~2600957.1157.1690.5290.7980.7644~35001032.491.4120.4410.6990.7225~7350608.943.0430.4180.950.5785~440076558.3330.4380.890.6816~5150507.23.2470.170.4720.247~8350798.334.2080.3320.6210.4967~17150715.84.7560.2490.9570.6858~181001259.91.1380.1340.4850.6119~8200422.85.5740.1640.3180.13410~91001201.60.9790.1150.3680.44210~11200860.38.1160.2390.6370.54811~121001423.30.8990.1060.3130.44612~133501611.238.9290.3780.7891.27113~2600938.6147.6990.4970.7110.66814~1345080574.4310.4680.9110.73314~11300146923.9310.3150.670.98415~3300955.730.8740.4061.0731.02615~1430038130.0310.3951.0190.38816~15350429.438.2930.3720.7650.329續(xù)表1管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)17~4250625.317.5690.3330.9180.57417~16100584.90.4830.0570.10.05818~16300732.824.4660.3220.6980.51118~10150607.23.350.1750.5010.30419~1500293.486.3570.4160.6290.185管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-336.981節(jié)點(diǎn)壓力(m)：516.80最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.622最小流速(m/s)：0.057水壓最低點(diǎn)：9，壓力(m)：512.72自由水頭最低：15，自由水頭（m）：28.00最不利點(diǎn)校核平差基本數(shù)據(jù)平差類型：最不利點(diǎn)校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-3：節(jié)點(diǎn)參數(shù)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)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)1-336.981480517371116.714474.37513.91939.549225.169477516.30439.3041238.03471.94514.36642.426334.883473.3515.5442.241334.339476.78515.63738.857415.51473.9514.81940.9191420.469476.05514.90338.853512.043471.5514.13842.6381522.612486.31514.51528.20563.247470513.89843.8981614.31475.36514.18638.826713.591469.5513.55944.0591712.33474514.24540.245829.772471.5513.06441.5641819.978474.38513.67539.295續(xù)表1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)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)96.553472.5512.92940.429196.944479516.81537.8151010.487473.5513.37139.871管道參數(shù)表3-4：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~19450497.979.4130.4991.0270.5112~1700768.9250.6240.6220.9050.6963~2600957.1157.1690.5290.7980.7644~35001032.491.4120.4410.6990.7225~7350608.943.0430.4180.950.5785~440076558.3330.4380.890.6816~5150507.23.2470.170.4720.247~8350798.334.2080.3320.6210.4967~17150715.84.7560.2490.9570.6858~181001259.91.1380.1340.4850.6119~8200422.85.5740.1640.3180.13410~91001201.60.9790.1150.3680.44210~11200860.38.1160.2390.6370.54811~121001423.30.8990.1060.3130.44612~133501611.238.9290.3780.7891.27113~2600938.6147.6990.4970.7110.66814~1345080574.4310.4680.9110.73314~11300146923.9310.3150.670.98415~3300955.730.8740.4061.0731.02615~1430038130.0310.3951.0190.38816~15350429.438.2930.3720.7650.32917~4250625.317.5690.3330.9180.57417~16100584.90.4830.0570.10.05818~16300732.824.4660.3220.6980.51118~10150607.23.350.1750.5010.30419~1500293.486.3570.4160.6290.185管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-336.981節(jié)點(diǎn)壓力(m)：517.00最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.622最小流速(m/s)：0.057水壓最低點(diǎn)：9，壓力(m)：512.93自由水頭最低：15，自由水頭（m）：28.20事故校核平差基本數(shù)據(jù)平差類型：事故校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-5：節(jié)點(diǎn)參數(shù)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)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)1-235.887480517371111.7474.37515.00640.636217.618477516.6439.641226.621471.94515.50843.568324.418473.3516.35343.0531324.037476.78516.1839.4410.857473.9515.93442.0341414.328476.05515.53939.48958.43471.5515.5444.041515.828486.31514.94828.63862.273470515.41645.4161610.017475.36514.83139.47179.514469.5515.19245.692178.631474515.5641.56820.84471.5514.88243.3821813.985474.38514.65640.27694.587472.5514.76942.269194.861479516.90537.905107.341473.5514.64941.149管道參數(shù)表3-6：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~19450497.955.5890.350.5310.2642~1700768.9175.4370.4360.4680.363~2600957.192.5930.3120.30.2874~35001032.468.1750.3290.4060.4195~7350608.932.690.3180.5710.3485~440076543.3930.3250.5150.3946~5150507.22.2730.1190.2440.1247~8350798.326.5750.2580.3890.311續(xù)表1管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)7~17150715.83.3990.1780.5140.3688~181001259.90.6640.0780.1790.2269~8200422.85.070.1490.2670.11310~91001201.60.4830.0570.10.1210~11200860.36.4380.1890.4150.35711~121001423.30.9580.1130.3530.50212~133501611.227.5790.2680.4170.67213~2600938.6120.8150.4070.490.4614~1345080569.1990.4350.7960.64114~11300146917.180.2260.3630.53315~1430038137.6910.4961.5520.59116~15350429.421.8620.2120.2710.11617~4250625.313.9250.2640.5970.37417~16100584.91.8950.2231.2460.72918~16300732.813.740.1810.240.17618~10150607.20.420.0220.0110.00719~1500293.460.450.2910.3250.095管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-235.887節(jié)點(diǎn)壓力(m)：517.00最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.496最小流速(m/s)：0.022水壓最低點(diǎn)：10，壓力(m)：514.65自由水頭最低：15，自由水頭（m）：28.64消防校核平差基本數(shù)據(jù)平差類型：消防校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-7：節(jié)點(diǎn)參數(shù)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)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)1-416.981480517371116.714474.37512.54438.174225.169477515.96238.9621238.03471.94513.73141.791334.883473.3514.66841.3681334.339476.78515.0438.26415.51473.9513.31939.4191420.469476.05513.72737.677512.043471.5511.78840.2881562.612486.31512.53526.22563.247470511.54941.5491614.31475.36512.20636.846713.591469.5510.16940.6691712.33474512.42138.421869.772471.5508.27836.7781819.978474.38511.67437.29496.553472.5508.21735.717196.944479516.73137.7311010.487473.5511.5438.04管道參數(shù)表3-8：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~19450497.998.9770.6221.5430.7682~1700768.9311.060.7731.351.0383~2600957.1208.9950.7041.3521.2944~35001032.4128.2370.6181.3071.355~7350608.975.0770.7292.6591.6195~440076590.3670.67821.536~5150507.23.2470.170.4720.247~8350798.370.5350.6852.3691.8917~17150715.89.0490.4733.1462.2528~181001259.92.8750.3382.6953.3959~8200422.83.6380.1070.1440.06110~91001201.62.9150.3432.7653.32310~11200860.311.2540.3311.1671.00411~121001423.31.5250.180.8341.18712~133501611.239.5550.3840.8131.30913~2600938.6175.8730.5920.9820.922149790.6411.6311.31314~11300146926.4430.3480.8061.18315~3300955.745.8750.6042.2322.13415~1430038155.0670.7253.131.19216~15350429.438.330.3720.7670.329續(xù)表1管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)17~4250625.322.360.4241.4350.89717~16100584.90.9810.1160.3690.21618~16300732.825.0010.3290.7260.53218~10150607.22.1480.1120.220.13419~1500293.4105.9210.510.9180.269管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-416.981節(jié)點(diǎn)壓力(m)：517.00最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.773最小流速(m/s)：0.107水壓最低點(diǎn)：9，壓力(m)：508.22自由水頭最低：15，自由水頭（m）：26.223.1.2.2方案二反算平差基本數(shù)據(jù)平差類型：反算水源壓力。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-9：節(jié)點(diǎn)參數(shù)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)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)1-336.981480517.46537.465610.786471.5513.32741.827226.009477516.5839.5873.364470513.07143.071332.845473.3515.54742.247812.831469.5512.76443.264413.666472514.82242.822922.292471.5511.79840.298511.792473.3513.80640.5061013.705474.8512.34237.542續(xù)表1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)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)1118.669474.38512.92738.5471626.015486.31514.31281218.035475.2513.95538.755178.979475.36513.74738.3871337.515476.08514.78638.7061810.136475513.88638.8861430.674476.78515.53638.7561916.5474.22513.30139.0811515.894476.05514.58538.535207.267479517.08738.087管道參數(shù)表3-10：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~20350517.943.7410.4250.9790.5072~1700766285.9730.711.1550.8853~2600950.1185.8260.6261.0881.0344~3500638.1118.8050.5731.1350.7245~4350659.355.9250.5431.5421.0176~5350512.842.6160.4140.9330.4786~8300609.728.4660.3750.9230.5637~6150508.83.3640.1760.5040.2578~19150539.54.8560.2540.9950.5378~9250791.320.4920.3891.2210.9669~10100479.61.80.2121.1340.54410~11150783.44.160.2180.7470.58510~19200809.711.3450.3341.1850.95911~12200820.111.6940.3441.2531.02711~17200715.811.1420.3281.1460.8212~131001220.51.3670.1610.6810.83213~14350952.238.8820.3780.7870.752~14500933.3117.8790.5681.1191.04415~14350808.448.3230.471.1770.95112~15300686.828.3620.3730.9170.6316~15150383.34.0670.2130.7170.2753~1630095534.1750.451.2951.23717~16200413.512.2280.361.3610.56318~17200228.77.8930.2320.6050.1384~18350769.349.2150.4781.2170.9365~19100611.21.5160.1790.8250.50519~18300534.931.1850.4111.0930.5851~20350290.651.0080.4961.3010.378管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-336.981節(jié)點(diǎn)壓力(m)：517.46最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.710最小流速(m/s)：0.161水壓最低點(diǎn)：9，壓力(m)：511.80自由水頭最低：16，自由水頭（m）：28.00最不利點(diǎn)校核平差基本數(shù)據(jù)平差類型：最不利點(diǎn)校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-11：節(jié)點(diǎn)參數(shù)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)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)1-336.981480517.537.51118.669474.38512.96338.583226.009477516.61539.6151218.035475.2513.9938.79332.845473.3515.58242.2821337.515476.08514.82238.742413.666472514.85742.8571430.674476.78515.57138.791511.792473.3513.84140.5411515.894476.05514.6238.57610.786471.5513.36341.8631626.015486.31514.34528.03573.364470513.10643.106178.979475.36513.78338.423812.831469.5512.843.31810.136475513.92138.921922.292471.5511.83440.3341916.5474.22513.33639.1161013.705474.8512.37737.577207.267479517.12238.122管道參數(shù)表3-12：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~20350517.943.740.4250.9790.5072~1700766285.9670.711.1550.8853~2600950.1185.8210.6261.0881.0334~3500638.1118.8020.5731.1350.7245~4350659.355.9240.5431.5421.0176~5350512.842.6160.4140.9330.4786~8300609.728.4660.3750.9230.5637~6150508.83.3640.1760.5040.2578~19150539.54.8570.2540.9950.5378~9250791.320.4910.3891.2210.9669~10100479.61.8010.2121.1340.54410~11150783.44.1610.2180.7480.58610~19200809.711.3440.3341.1840.95911~12200820.111.6910.3441.2521.02711~17200715.811.1390.3281.1450.8212~131001220.51.3670.1610.6810.83113~14350952.238.8820.3780.7870.752~14500933.3117.8770.5681.1191.04415~14350808.448.3210.4691.1770.95112~15300686.828.3590.3730.9170.6316~15150383.34.0670.2130.7170.2753~1630095534.1740.451.2951.23717~16200413.512.2260.361.360.56218~17200228.77.8920.2320.6050.1384~18350769.349.2120.4781.2170.9365~19100611.21.5160.1790.8250.50419~18300534.931.1850.4111.0930.5851~20350290.651.0070.4961.3010.378管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-336.981節(jié)點(diǎn)壓力(m)：517.50最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.710最小流速(m/s)：0.161水壓最低點(diǎn)：9，壓力(m)：511.83自由水頭最低：16，自由水頭（m）：28.04事故校核平差基本數(shù)據(jù)平差類型：事故校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-13：節(jié)點(diǎn)參數(shù)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)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)1-235.887480517.537.51113.068474.38514.41740.037218.206477517.04340.0431212.624475.2515.24740.047322.991473.3516.57643.2761326.261476.08515.99139.91149.566472516.06944.0691421.472476.78516.38739.60758.254473.3515.47642.1761511.126476.05515.63339.58367.55471.5515.19443.6941618.21486.31514.25327.94372.355470515.06245.062176.285475.36514.53839.17888.982469.5514.84345.343187.095475515.22240.222915.604471.5514.29442.7941911.55474.22514.94640.726109.593474.8514.34839.548205.087479517.30538.305管道參數(shù)表3-14：管道參數(shù)管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)2~20350517.930.6180.2970.5060.2622~1700766200.1770.4970.5970.4573~2600950.1120.9490.4070.4910.4674~3500638.197.9570.4720.7940.5075~4350659.341.7920.4060.90.5936~5350512.831.9810.3110.5480.2816~8300609.722.0760.2910.5770.3527~6150508.82.3550.1230.2610.1338~19150539.51.9960.1040.1920.1048~9250791.315.090.2860.6930.549續(xù)表1管道編號(hào)管徑(mm)管長(m)流量(L/s)流速(m/s)千米損失(m)管道損失(m)9~10100479.60.5140.060.1120.05310~11150783.41.3140.0690.0890.06910~19200809.78.7930.2590.7390.59911~12200820.110.4220.3071.0120.8311~17200715.83.960.1170.1690.12112~131001220.51.2870.1520.6090.74413~14350952.227.5480.2680.4160.3962~14500933.391.640.4420.7020.65515~14350808.442.6210.4140.9330.75412~15300686.821.760.2860.5620.38616~15150383.39.7350.5093.6021.38117~16200413.58.4750.2490.6910.28618~17200228.718.7210.5512.9920.6844~18350769.346.5990.4531.10.8465~19100611.21.5560.1830.8660.52919~18300534.920.7830.2740.5160.2761~20350290.635.7050.3470.6720.195管網(wǎng)平差結(jié)果特征參數(shù)水源點(diǎn)1：節(jié)點(diǎn)流量(L/s)：-235.887節(jié)點(diǎn)壓力(m)：517.50最大管徑(mm)：700.00最小管徑(mm)：100.00最大流速(m/s)：0.551最小流速(m/s)：0.060水壓最低點(diǎn)：16，壓力(m)：514.25自由水頭最低：16，自由水頭（m）：27.94消防校核平差基本數(shù)據(jù)平差類型：消防校核。計(jì)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計(jì)算溫度：13，ν=0.000001局部損失系數(shù)：1.30水源點(diǎn)水泵參數(shù)：水源點(diǎn)水泵楊程單位(m)，水源點(diǎn)水泵流量單位:(立方米/小時(shí))節(jié)點(diǎn)參數(shù)表3-15：節(jié)點(diǎn)參數(shù)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)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)1-416.981480517.537.51118.669474.38511.59537.215266.009477516.18239.1821218.035475.2513.17437.974332.845473.3514.75941.4591337.515476.08514.29738.217413.666472513.62241.6221430.674476.78515.05538.275511.792473.3511.55438.2541515.894476.05513.92537.875610.786471.5510.37138.8711626.015486.31513.36827.05873.364470510.11440.114178.979475.36512.40437.044812.831469.5508.44138.9411810.136475512.43837.438962.292471.5502.47230.9721916.5474.22511.4223