三门湾水动力环境对围填海的响应

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1、浙江大学硕士学位论文AbstractWiththeincreasinglyseverecontradictionbetweenrapiddevelopmentofeconomyanddeficiencyoflandresource，coastalregionwheretherearevastmudflatsforreclamationhasexperiencedwavesofreclamationfever,resultingirreversibleimpacttosurroundingwaterse

2、speciallyinmacro-tidalbay．111emacro—tidalbayswimmultiple—inletscontrolledmainlybytidalcurrentwouldbeindangerwithreclamationintensitybeyondtheirlimitedadjustmentability．SanmenBayisatypicalsemi-enclosedmacro—tidalbaywiⅡlmultiple—inletsstretchingdeepintoth

3、elandinalternativearrangementwithlanguettemudflatsonwhichmanyreclamationprojectshavebeenimplementedfordecades，resultinginconsiderabledecreaseoftidalprismandvariationsofhydrodynamicenvironmentinSanmenBay．Withthepurposeofpossessingtheregularityofresponsei

4、nmultiple··inletsmacro-·tidalbaystoreclamation，andmakingfurthereffortsonreferenceinformationofsustainablereclamation，a2DhydrodynamicmodelofagrandsimulatingregionincludingSanmenBay,TaizhouBayandotherareaisestablishedbyDelfl3Dwhichcouldreproduceaccurately

5、dryingandfloodingofthevasttidalflatsandadjusttothetortuouscoastlinewimorthogonalcurvilineargrl‘ds，andthen，basedonthis，3simulatingplanaccordingtoreclamationsituationof2004，2009and2020areimplementedtoresearchthemultipleresponseofthehydrodynamicenvironment

6、inSanmenBay,takingtidalflow,waterexchangecapability,tidalprismandmomentaryflowthrou【曲representativecross—sectionsandtheallocationamongthemindifferentinletsasindexes．Theresultshowsthattheresponsecharacteristicindifferentkindsoftidal—inletsinSanmenBayisdi

7、fferent．Inthefirstkindofinlets，thatisShipuchannel，whichconnectswithopenwaters，thereductionofwatersareaofthewholeSanmenBayresultsinthereductionofcurrentvelocityandmomentaryflowinasmallscale．Inotherl(indwithoutdirectconnectionwithopenwater,theresponseofti

8、dalcurrentvelocity,momentaryflowthroughtheentranceandtidalprismalestronglyrelatedtothereclamationprojectsininletscalculatedorintheirsub—inlets，ratherthanthoseoutsideofthemorevensurroundingtheentranceofthem，althoughthemomentaryflo