湘江流域干流堤防防洪安全形势研究

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Flood Control Safety Situation ofMain Stream Dikes in Xiangjiang River Basin

LIUChang’，PENGLulu'，YANG Liu 1，2，3 ，FENGChang1，23，ZHOU Jialong'，LINa’，SHI Yabo1 （1.Collegeofoayndousm，HengangoalUvesityngang4a;2.engngse，tetiolCte onSpaceTechnologiesforNaturalandCultural Heritage （HST）undertheAuspicesofUNESCO，Hengyang ，China;3.Huan Environmental Education and Sustainable Development Research Base， Hengyang 421oo2， China）

Abstract：Inordertoclarifytheevolutionprocessandflodcontrolsituationof themainstreamdikesinXiangjiangRiverunder diferentflood processs，aone-dimensional hydrodynamic modelofthemainstreamof XiangjiangRiver Basinwasestablishedby usingthe MIKE11model，ndthemodelwascalibratedandverifiedbyusingthemeasuredflooddata.Theevolutionproceofflood inthemainstreamofXiangjiangRiverBasin wasanalyzedandcalculated.Theresultsshowthatinthecalculated waterlevelwitha 20-yearreturnpriodoftheZhuzhou-JnggangsectionofthemainstreamofXiangjiangRiver，theoverflow-pronepositionontheleft bank ismore thanthatontherightbank，whileinthecalculatedwaterlevelwith 5O-yearandOO-yearreturnperiods，theoverflowpronepositionontherightbankismorethanthatontheeftbank.Basedontheaalysisoftheriversectionsatthestations，iisfound thatduringthefloodprossithayarretuperiod，thereare48，28andoveflopronesectiosoothteleftnkand rightbanki-Xigaogah（lsiodsh-iniospie hydrodynamicmodelestablishedinthispapercanprovideanefectivereferenceforfloodforecastinginthemainstreamof Xiangjiang RiverBasin in the future.

Keywords： MIKE11; flood simulation;flood control of dike;main stream of Xiangjiang River Basin

在全球气候变化的背景之下，极端气候水文事件的发生频率、范围和程度都有所增加，其中以洪水灾害所带来的经济损失最为严重，使得洪水模拟与预警技术的研究成为防灾减灾的核心课题[1-2]。（剩余9710字）