【正文】
送,貯存,調(diào)節(jié)和分配的科學(xué)。②熟練城鎮(zhèn)給水排水工程系統(tǒng)的詳細(xì)計(jì)算和培養(yǎng)一定的理論分析和設(shè)計(jì)的能力。城市的街區(qū)分布均勻,城市中各工業(yè)企業(yè)對(duì)水質(zhì)無特殊要求???cè)丝诘挠?jì)算:,320=618400人,250=94100人。清水池〉2500m179。(2)為可靠供水,從二級(jí)泵站到控制點(diǎn)之間選定幾條主要的平行干管線,這些平行干管中盡可能均勻的分配流量,并且滿足節(jié)點(diǎn)流量平衡的條件。取最不利管段1211121315171920,管網(wǎng)水頭損失為∑h=+++++++=最大時(shí)水泵揚(yáng)程H1=∑h+28+2+++2= 消防校核該市同一時(shí)間火災(zāi)次數(shù)為三次,一次滅火用水量為100L/S,從安全和經(jīng)濟(jì)角度考慮,失火點(diǎn)設(shè)在20節(jié)點(diǎn)及39節(jié)點(diǎn)處,消防時(shí)管網(wǎng)各節(jié)點(diǎn)的流量除39節(jié)點(diǎn)各附加100L/S的消防流量外,其余各節(jié)點(diǎn)的流量與最高時(shí)相同。節(jié)點(diǎn)水壓計(jì)算見下表:表16 節(jié)點(diǎn)水壓計(jì)算節(jié)點(diǎn)節(jié)點(diǎn)地形標(biāo)高/m自由水壓/m水壓標(biāo)高/m節(jié)點(diǎn)節(jié)點(diǎn)地形標(biāo)高/m自由水壓/m水壓標(biāo)高/m120 221 322423 524625 726827 928102911301231 1332 14331534163517361837 1938節(jié)點(diǎn)39為控制點(diǎn)3928 m,清水池最低水位2m,最低水位地面標(biāo)高74m。 管網(wǎng)水力計(jì)算集中用水量主要為工廠的生產(chǎn)用水量和職工生活用水量或其他大用戶的用水量,當(dāng)工人淋浴時(shí)間與最大時(shí)供水重合時(shí)淋浴用水也應(yīng)該計(jì)入集中用水量,否則不計(jì)入集中用水量。Q31=222308900020%10%=1847120 L/d(2)根據(jù)《給排水快速設(shè)計(jì)手冊(cè)》,, L/ m2 計(jì),由于面積太大澆灑面積按總面積的10%算Q32=22308900030%10%= 1385340L/d(3)澆灑道路和綠化用水量Q3Q3= Q31+ Q32=1847120+1385340=3232460 L/d= m/d管網(wǎng)漏失水量按最高日用水量的11%計(jì)算。輸水管線走向應(yīng)符合城市和工業(yè)企業(yè)規(guī)劃要求,沿現(xiàn)有道路鋪設(shè),有利于施工和維護(hù)。Foreword Water drains, water supply and drainage project is an important ponent of the project can be divided into drains and water supply pipeline project works two categories.Water pipeline project is on the upgrading of water, transmission, storage, distribution and regulation of science. Its most basic task is to ensure that the raw water source sent to the water treatment structures and water users with the water quality standard transmission and distribution to users. This task through the pump stations, pipelines, distribution mains network structure and regulation and other facilities to work together to achieve, and they formed a water pipeline project. Design and management is a basic requirement for at least the construction costs and management fees to ensure that the necessary water users and pressure to ensure water quality and safety, reduce leakage and achieve the required reliability.Outdoor urban water supply and drainage project is the construction of an important ponent of its main tasks is to provide adequate number of towns and meet certain water quality standards。室外給水排水工程是城鎮(zhèn)建設(shè)的一個(gè)重要組成部分,其主要任務(wù)就是為城鎮(zhèn)提供足夠數(shù)量并符合一定水質(zhì)標(biāo)準(zhǔn)的水;同時(shí),把人們?cè)谏?、生產(chǎn)過程中使用后的污水匯集并輸送到適當(dāng)?shù)攸c(diǎn)進(jìn)行凈化處理,達(dá)到一定水質(zhì)標(biāo)準(zhǔn)后,或重復(fù)使用,或灌溉農(nóng)田,或排入水體。其最基本的任務(wù)是保證水源的原料水送至水處理構(gòu)筑物及符合用戶用水水質(zhì)標(biāo)準(zhǔn)的水輸送和分配到用戶。提高方案的比較、技術(shù)經(jīng)濟(jì)、環(huán)境、社會(huì)等諸方面的綜合分析和論證能力。因而采用統(tǒng)一給水系統(tǒng)。該城市為昆明市,隸屬云南省,查《室外排水設(shè)計(jì)規(guī)范》P61,人口50萬到100萬為大城市,云南省屬一區(qū),則綜合生活用水定額為240~390 L/,本設(shè)計(jì)采用300L/%。應(yīng)建成矩形較經(jīng)濟(jì),個(gè)數(shù)一般不少于兩個(gè),并能單獨(dú)工作和分別放空。(3)與干管線垂直的連接管,其作用主要是溝通平行干管之間的流量,有時(shí)起一些輸水作用,有時(shí)只是就近供水到用戶,平時(shí)流量不大,只有在干管損壞時(shí) 才轉(zhuǎn)輸較大的流量,因此連接管中可以較少的分配流量。消防平差結(jié)果見下表:=============================================================== 迭代次數(shù)=53 ================================================================== 環(huán)號(hào)= 1 閉合差= .000 管段號(hào) 管長 管徑 流速 流量 1000I 水頭損失 sq (米) (毫米) (米/秒) (升/秒) (米) 1 847 800 .99 .0025 2 1064 500 .98 .0144 3 800 300 .37 .86 .69 .0263 4 1137 500 .0162 sqtotal= .012 dq= .00 ================================================================== 環(huán)號(hào)= 2 閉合差= .000 管段號(hào) 管長 管徑 流速 流量 1000I 水頭損失 sq (米) (毫米) (米/秒) (升/秒) (米) 1 1030 500 .81 .0119 2 725 400 .76 .0165 3 1058 200 .24 .65 .69 .0930 4 1064 500 .98 .0144 sqtotal= .012 dq= .00 ================================================================== 環(huán)號(hào)= 3 閉合差= .000 管段號(hào) 管長 管徑 流速 流量 1000I 水頭損失 sq (米) (毫米) (米/秒) (升/秒) (米) 1 917 500 .87 .0112 2 1137 500 .0162 3 953 200 .31 .1048 4 1071 400 .78 .0250 sqtotal= .012 dq= .00 ================================================================== 環(huán)號(hào)= 4 閉合差= .000 管段號(hào) 管長 管徑 流速 流量 1000I 水頭損失 sq (米) (毫米) (米/秒) (升/秒) (米) 1 1194 1200 .0011 2 578 1800 .83 .48 .0001 3 300 1500 .0001 4 993 1100 .0013 5 714 500 .60 .0064 6 820 500 .71 .0084 sqtotal= .019 dq= .00 ================================================================== 環(huán)號(hào)= 5 閉合差= .000 管段號(hào) 管長 管徑 流速 流量 1000I 水頭損失 sq (米) (毫米) (米/秒) (升/秒) (米)