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1、长江中游牯牛沙水道航道整治一期工程效果分析蔡大富，邹祝，闫军，黄佶佶，王领元，项欢庆（长江航道规划设计研究院，湖北武汉430011）摘要：牯牛沙水道为长江屮游近期出现的巫点碍航浅水道，整治好该水道对长江屮游航道的畅通具冇重要意义。交通运输部于2010年2月批复同意实施该水道航道整治一期工程。简介牯牛沙水道演变特点、主要影响因素、碍航特性与幣治方案，详细分析牯牛沙水道整治前后过渡段变化情况、牯牛沙边滩淤积情况以及航道改善常况，重点分析一期工程整治效果，预测演变趋势，提出后续工程建议。一期工程实施后，工程效果良好，总体河势更趋
2、稳定，牯牛沙边滩淤高展宽，利于枯水期水流集中，过渡段浅埃得到较为有效冲刷，淤积减少，碍航程度减轻，浅区航道条件改善，为后续工程的实施创造了有利条件。分析认为：一期工程效果将会随着建筑物功能的继续发挥进一步显现，达到预期目标。关键词：牯牛沙水道；航道整治；效果分析中图分类号：U617文献标志码：A文章编号：1002-4972(2011)03-0097-06EffectanalysisofGuniushawaterwayfirstphasechannelregulationprojectinthemiddlereachofth
3、eYangtzeRiverCAIDa-fu,ZOUZhu,YANJun,HAUNGBei-bei,WANGLing-yuan,XIANGHuan-qing(ChangjiangWaterwayInstituteofPlanning,DesignandResearch,Wuhan430011,China)Abstract:Guniushawaterwayisakeynavigation-obstructingshallowsectionemerginginthemiddlereachoftheYangtzeRiverinre
4、centyears,anditisofgreatimportancetoregulatethispartofwaterwayforthesmoothnavigationinthemiddlereachoftheYangtzeRiver.TheimplementationofthefirstphasechannelregulatiorprojectofGuniushawaterwaywasapprovedbytheMinistryofTransportinFeb.of2010.Theevolutionalfeaturesma
5、ininfluencingfactors,thenavigation-obstructingcharacteristicsandregulationplansofGuniushawaterwayareintroduced:Thevariationsofcrossing,thedepositionofGuniushapointbarandtheimprovementofchannelparticularlytheeffectsofthefirstphaseprojectareanalyzed;Theevolutiontren
6、dofthiswaterwayispredicted,anctheproposalsonthefollow-upworksareputforward・Aftertherealizationofthefirstphaseproject,thesituationo,therivercoursebecomesmorestable,thedepositoccursattheGuniushapointbar,andthebarwidens,thustheflowconcentrateseasilyinlowwater,theshal
7、lowridgeatthecrossingisscouredefficiently,theamount01accumulationisreduced,thedegreeofnavigation-obstructingisrelieved,andthechannelconditionsintheshallowareaareimproved,whichcreatefavorableconditionsforthefollow-upworks.Itisthoughtthattheeffectofthefirsphasechann
8、elregulationprojectwillbecomemoreobviousalongwiththerealizationofthestructures1function
