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南水北调中线工程总干渠非正常工况下的水力响应分析 Hydraulic Response in Abnormal Operation Modes of the Middle Route of the South-to-North Water Diversion Project
第5卷第6期 南水北调与水利科技 VoL5N0．6 S0utl卜t0_N0nhWaterTransferSandWater Dec 2007年12月 science＆Tecll|lol093， 2007 南水北调中线工程总干渠非正常工况下的水力响应分析 张成，傅旭东，王光谦 (清华大学水沙科学与水利水电工程国家重点实验室，北京100084) 摘要：非正常工况下的渠道水力响应对大型调水工程输水渠道的安全有着深刻的影响。以南水北调中线工程总干渠 典型渠段作为研究对象，模拟分析了非正常工况下渠段的水力响应特征及退水闸的退水作用。计算结果表明，事故渠 段上、下游端节制闸紧急关闭时，节制闸前(或后)水位壅高(或降落)的幅度很大，渠段内水位波动剧烈；节制闸关闭时 间的延长虽能在一定程度上减小水位壅高和降落幅度，但效果并不明显；退水闸的启用能够较好减小水位的壅高幅 度，有效降低水流的漫溢危险。 关键词：南水北调；中线工程；非正常工况；水力响应 中图分类号：TVl33．2；TV68文献标识码：A 文章编号：1672—1683(2007)06-0008一05 Ab舯珈嗡l ofthe HydmuIicR剀p伽鼬in ope隐ti帆ModesMiddleR帆te ofthesoutl卜t俨NormWat盯Dive璐i蚰Pro．ect ZHANG Cherlg，F1JXl卜dong，WANGGuang-qiam· 100084·吼讹) (S纽捃‰yfn6Dr口加删o，H州ro盯i觥n材凸gi船洲馏，孔fng^眦‰i御叮的，＆巧f行g u11der modesisoneofbasicconcemsfor of waterdi— AhtnIct：HydrauIic弛sponseabnom“opemtion operati∞髓fetyl∞g_distancelarge-s∞le vefsi∞cha∞el＆Thisa in cIlannelr朗ch娼oftheMiddIeIbuteof paperpreselltsshulati∞蚰d娜lysisofhydraulic托sponseproces踺stypical theS0ut|卜to-NorthWaterDiversion the dowTIstream ofacha玎nelre扯ha托closed Project(孙刑DP)．Whenupstre锄and regulatorgates quic“y inthecaseof waterlevelintheaccidentcha∞e1willnuctuate a than accidents，the greatly，withtypicalIIlagnitudegf∞ter 1．O札Prolorlgation ofthe not levelfluctuatio仉Incontrast，useofthe theaccidentchamel锄舻 dosir塔tiInec眦，buteffectivdy，suppre鹊、张ter slui南gate、^ritKn ducethe of、张terle、，elfIuctuationand theoccurrenceofo、，erflow． magnitude
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