【摘要】：隨著城市化建設(shè)的進(jìn)展，大量人口涌入城市，城市用水量日益增大，供水管網(wǎng)的供水負(fù)擔(dān)不斷加重，加之部分管段鋪設(shè)年代較為久遠(yuǎn)，老化嚴(yán)重，，爆管事故時(shí)有發(fā)生。爆管事故不同于管網(wǎng)漏失，一旦發(fā)生，對(duì)管網(wǎng)的危害極大，需要迅速關(guān)閥搶修，并采取相應(yīng)的應(yīng)對(duì)措施，盡最大限度的減少經(jīng)濟(jì)損失。本文以多事故點(diǎn)關(guān)閥策略為核心，對(duì)多水源供水管網(wǎng)在事故前后的供水分區(qū)變化以及事故后的供水保障措施進(jìn)行了研究，使之能夠更好的應(yīng)用于實(shí)際管網(wǎng)。 對(duì)多水源管網(wǎng)的供水分區(qū)的研究，以圖論為理論基礎(chǔ)。供水管網(wǎng)的節(jié)點(diǎn)與管段相當(dāng)于圖論理論中的“點(diǎn)”和“弧”，將各節(jié)點(diǎn)之間的關(guān)系用鄰接矩陣來(lái)表達(dá)，在EPANET管網(wǎng)模擬軟件上建立管網(wǎng)模型，從一個(gè)水源節(jié)點(diǎn)開始，順著流量的方向，逐一搜尋該水源的供水能夠到達(dá)的節(jié)點(diǎn)，并找到供水分界點(diǎn)，根據(jù)分界點(diǎn)確定供水分區(qū)。 運(yùn)用廣度優(yōu)先搜索算法，對(duì)關(guān)閥策略展開研究。首先對(duì)單事故點(diǎn)的關(guān)閥策略進(jìn)行研究，再以單事故點(diǎn)為基礎(chǔ)，對(duì)多事故點(diǎn)的關(guān)閥策略展開研究。由于管網(wǎng)關(guān)系錯(cuò)綜復(fù)雜，多事故點(diǎn)的關(guān)閥策略并不一定等同于各個(gè)單一事故點(diǎn)的單獨(dú)策略的簡(jiǎn)單疊加。最終將關(guān)閥策略的算法做成DLL動(dòng)態(tài)鏈接庫(kù)文件，以實(shí)現(xiàn)算法的通用性，并使之能夠被其他主程序調(diào)用，方便以后的研究。 在形成了多事故點(diǎn)關(guān)閥策略之后，結(jié)合供水分區(qū)的算法，以幾種不同類型事故的情況為例，形成事故后的供水分區(qū)，與正常狀態(tài)下的供水分區(qū)相比，結(jié)合管網(wǎng)流向圖，研究其變化，分析其成因，找出事故影響供水分區(qū)的主要因素，并從經(jīng)濟(jì)性和安全性兩個(gè)方面，對(duì)事故時(shí)的管網(wǎng)優(yōu)化調(diào)度進(jìn)行簡(jiǎn)要探討。 由于事故的影響，管網(wǎng)的供水安全受到了很大的沖擊，需從水力和水質(zhì)兩個(gè)方面對(duì)供水安全保障技術(shù)展開研究。水力方面以節(jié)點(diǎn)自由水壓為對(duì)象，水質(zhì)方面以余氯為對(duì)象，研究其在事故發(fā)生之后的變化，并提出相應(yīng)的解決措施，使供水管網(wǎng)在事故發(fā)生后的關(guān)閥搶修階段，仍能向事故影響區(qū)之外的管段和節(jié)點(diǎn)安全穩(wěn)定的持續(xù)供水。
[Abstract]:With the development of urbanization, a large number of people pour into the city, the urban water consumption is increasing day by day, the water supply burden of the water supply network is increasing, in addition, some pipe sections are laid for a long time, aging is serious, pipe burst accidents occur from time to time. The accident of pipe burst is different from the leakage of pipe network. Once it happens, it will do great harm to the pipe network, so it is necessary to close the valve quickly and repair it quickly, and take corresponding measures to reduce the economic loss as far as possible. In this paper, the change of water supply zone before and after the accident and the water supply guarantee measures after the accident are studied based on the strategy of closing the valve at the multi-accident point, so that it can be better applied to the practical pipe network. The study of water supply zoning of multi-source pipe network is based on graph theory. The nodes and pipe segments of the water supply network are equivalent to the "points" and "arcs" in graph theory. The relationship between the nodes is expressed by the adjacency matrix, and the pipe network model is established on the EPANET pipe network simulation software, starting with a water source node. According to the flow direction, the water supply node of the water source is searched one by one, the water supply boundary point is found, and the water supply partition is determined according to the water supply boundary point. Using breadth-first search algorithm, the strategy of closing valve is studied. First, the strategy of closing valve at single accident point is studied, and then, based on single accident point, the strategy of closing valve in multiple accident point is studied. Due to the complexity of pipe network relationship, the closing valve strategy of multiple accident points is not necessarily equivalent to the simple superposition of individual strategies of each single accident point. Finally, the algorithm of closing valve strategy is made into DLL dynamic link library file, so that the algorithm can be universal and can be called by other main programs, which is convenient for future research. After forming the multi-accident point closing valve strategy, combined with the algorithm of water supply partition, taking several different types of accidents as an example, the water supply zone after the accident is formed. Compared with the normal water supply zone, the flow chart of pipe network is combined. This paper studies its change, analyzes its cause of formation, finds out the main factors that affect water supply zoning, and discusses briefly the optimal dispatching of pipeline network in the event of accident from the aspects of economy and safety. Due to the influence of accidents, the safety of water supply in the pipeline network has been greatly impacted. It is necessary to study the water supply security technology from the aspects of water power and water quality. The hydraulic aspect takes the joint free water pressure as the object, the water quality aspect takes the residual chlorine as the object, studies its change after the accident, and proposes the corresponding solution measure, causes the water supply network to close the valve to repair the stage immediately after the accident, Can still provide safe and stable water supply to pipes and nodes outside the accident-affected area.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU991.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陸海;呂謀;董深;;城市供水管網(wǎng)系統(tǒng)分區(qū)改造模式的研究[J];城鎮(zhèn)供水;2007年04期

2 劉余;王青建;;圖論的源流及其應(yīng)用[J];大連教育學(xué)院學(xué)報(bào);2007年03期

3 余云;鄔奇梅;;數(shù)據(jù)結(jié)構(gòu)中圖的遍歷算法[J];電腦知識(shí)與技術(shù);2008年17期

4 劉波;尹路;田為春;;基于圖論的供水管網(wǎng)事故時(shí)關(guān)閥算法研究[J];工程勘察;2010年12期

5 趙元;;輸配水系統(tǒng)事故狀態(tài)下的優(yōu)化調(diào)度模型[J];供水技術(shù);2007年02期

6 王煥君;周長(zhǎng)芹;顧淑娟;;多水源供水管網(wǎng)余氯優(yōu)化控制研究及應(yīng)用[J];供水技術(shù);2011年05期

7 鄧海英,趙洪賓,解斌;供水管網(wǎng)事故時(shí)閥門關(guān)閉方案的確定[J];中國(guó)給水排水;2000年06期

8 李霞;李國(guó)金;趙新華;王亮;;供水管網(wǎng)的多水質(zhì)組分預(yù)測(cè)建模研究[J];中國(guó)給水排水;2008年11期

9 陳們;莊寶玉;趙新華;;事故狀態(tài)下供水管網(wǎng)的拓?fù)浞治鯷J];中國(guó)給水排水;2012年09期

10 鄭蘇娟,徐筱麟,丁蓮珍;基于圖論的城市供水管網(wǎng)搶修決策信息系統(tǒng)[J];河海大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年05期

本文編號(hào)：2259323