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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/1369

    Title: 配水管網破管與供水穩定性關係之研究
    Authors: 袁覺仁;Shae-Zan Yuan
    Contributors: 土木工程學系碩士在職專班
    Keywords: 配水管網;供水穩定性
    Date: 2002-06-27
    Issue Date: 2009-09-21 09:27:53 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 目前既有供水區中有關自來水供配線管網在操作維護管理的問題很多,包括水壓、水量、水質等,當供配水管網發生供水量不足、破管或其他因素導致供水失衡時,會顯現出制水閥設置及操作上的重要性,設置太多將徒增工程費與管理人力,太少則破管搶修時必需關閉很多制水閥,裝設位置不當則破管時會發生供水失常情形。 供配水管線系統發生破管漏水時,供水區內水壓降低、供水量減少、水質受污染。在破管關閉鄰近制水閥等待搶修通水的復水期間,各管段的流量、流向及各節點的剩餘水頭會發生重新平衡現象,可能使節點水壓下降,無法滿足用戶最適宜的供水壓力(1.5~4.0kg/cm2),本研究採用哈弟-克勞斯水力分析法分析法(Hardy Cross Method)分析每一管段破管時,以制水閥之設置、增減供水區、增減供水量與分區分時供水等各種不同的角度來分析,探討改善供水失衡情形。 本研究係以幼獅供水區為案例,經由分析與整理後,提出改善方案,提供未來設置制水閥與供水維護管理及改善之參考,並建議透過流量計及水壓計、監控中心等之設置,以利於發生破管時經由監控系統指示即刻關閉閥門,縮短搶修通水時間並維持供水之穩定。 At present in water-supply areas, as for the supply nets of piped water, there are still plenty of problems on operation, maintenance, and administration, including water pressure, water quantity, and water quality. While the supply nets of water lack of water to provide, or the broken pipes and other causes lead water supply unbalanced, which will show the importance of the water-control devices —like water bolts and water-supply operation. In case there are too many such bolts, the cost of the construction and the manpower of administration will surely increase uselessly. In other respects, should the water-control bolts are deployed deficiently, many water bolts must be switched off as the pipes are broken and need to be repaired in time. If the bolt is installed in the wrong place, the broken pipe will cause the water supply unbalance. When the system of the supply-water pipes leaking, the water pressure will be low in the water-supply area, the quantity of water supply will reduce, and the quality of water will be also polluted. In the period of switching off the broken pipes, the neighboring water bolts are waiting to be repaired in order to supply water. During the recondition of water supply, the flow and the direction of each pipe section, and surplus water ends of each joint will face unbalanced condition. Probably it will make the water pressure of the joints lower. Then the proper water pressure could not be satisfied (1.5~4.0kg/ cm2) when providing the customers running water. The study uses Hardy Cross method to analyze each section when pipes are broken. Through installing the water-control bolts, increasing or decreasing the volume of water supply, increasing or decreasing the areas of water supply, dividing the districts and times of water supply, and probing various angles to analyze the matter, an engineer can improve the balance of water supply more precisely. This study bases on the water supply of Yu-shih district, through analyses and synthetic arrangements; we propose the improvement plans which provide the references for how to install water-control bolts and how to maintain and administrate water supply for the future is proposed. In addition, by applying flow meters , piezo-meters, and the center of monitor, which will facilitate to switch off bolts in case of any broken pipes, so it may shorten the repairing time for water supply and maintain water supply steadily during the period of fixing.
    Appears in Collections:[土木工程學系碩士在職專班] 博碩士論文

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