水锤压力引发南化水库输水管路爆管之探究.PDF

臺灣水利　第 58 卷　第 3 期 Journal of Taiwan Water Conservancy 民國 99年 9 月出版 Vol. 58, No. 3, September 2010 水錘壓力引發南化水庫輸水管路爆管之 探究 Investigation of the Nan-Hua Reservoir Water-Conveyance Pipeline Explosion Induced by Water Hammer Pressure 仲　偉　浩* 蕭　立　台 康　易　隆 華　春　河 EI AO HUNG I AI SIAO I UNG ANG HUN O UA W -H C L -T H Y -L K C -H H 陸軍官校土木系 陸軍官校機械系 陸軍官校土木系 陸軍官校土木系 副教授 副教授 助理教授 助理教授 摘　　　　　要 氣液混合體若為均質且含氣率較小時，其在管路系統中之流動可以擬流體方式處理 之，此種流動在暫態條件下可產生不容忽視之震波—水錘現象，水錘可能是管路之災難， [1] 也可能另有其因，不易直辨。本文將利用Hytran軟體 分析茅埔至內門解壓池中因閥門之 關閉而引發之暫態流，從而探究水錘是否為南化水庫聯通管路爆管之主要原因，文中亦包 含了相關閥門特性曲線之建立，所得結果或可作為未來閥門關閉之操作依據，並得以釐清 一些潛在但未被檢驗之問題。 關鍵詞 ：聯通管路，爆管，閥門特性曲線，水錘。 ABSTRACT Flow of gas-liquid mixture in pipline systems can be regarded as a pseudo-fluid flow if the mixture is homogeneous and the void fraction is small. Such flow may invoke nontrivial shocks - water hammer under transient state conditions. Water hammer may turn out to be the disaster of pipes and so do the other factors, which is not easy to be identified directly. This paper will use Hytran Solutions software [1] to analyze the transient flow between Mao-Pu and Nei-Men pressure reduction tanks due to valve closure. The analysis may reveal if water hammer causes the pipeline explosion in Nan-Hua Reservoir connection pipline system. Related valve characteristics curves are formulated as well. Research results may b