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1、長江中游牯牛沙水道航道整治一期工程效果分析蔡大富，鄒祝，閆軍，黃佶佶，王領(lǐng)元，項(xiàng)歡慶（長江航道規(guī)劃設(shè)計(jì)研究院，湖北武漢430011）摘要：牯牛沙水道為長江屮游近期出現(xiàn)的巫點(diǎn)礙航淺水道，整治好該水道對(duì)長江屮游航道的暢通具冇重要意義。交通運(yùn)輸部于2010年2月批復(fù)同意實(shí)施該水道航道整治一期工程。簡介牯牛沙水道演變特點(diǎn)、主要影響因素、礙航特性與幣治方案，詳細(xì)分析牯牛沙水道整治前后過渡段變化情況、牯牛沙邊灘淤積情況以及航道改善常況，重點(diǎn)分析一期工程整治效果，預(yù)測演變趨勢，提出后續(xù)工程建議。一期工程實(shí)施后，工程效果良好，總體河勢更趨
2、穩(wěn)定，牯牛沙邊灘淤高展寬，利于枯水期水流集中，過渡段淺埃得到較為有效沖刷，淤積減少，礙航程度減輕，淺區(qū)航道條件改善，為后續(xù)工程的實(shí)施創(chuàng)造了有利條件。分析認(rèn)為：一期工程效果將會(huì)隨著建筑物功能的繼續(xù)發(fā)揮進(jìn)一步顯現(xiàn)，達(dá)到預(yù)期目標(biāo)。關(guān)鍵詞：牯牛沙水道；航道整治；效果分析中圖分類號(hào)：U617文獻(xiàn)標(biāo)志碼：A文章編號(hào)：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
