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StudyonrainwaterrunoffcontroleffectofLIDmeasuresbasedonHydrus - 1D
1,2
1
1
1
MAIYepeng ,HUANGGuoru 2,3,4 ,XIEHehai,ZENGBiqiu,MAXinghua
(1.PearlRiverWaterResourcesResearchInstitute,PearlRiverWaterResourcesCommissionof
theMinistryofWaterResources ,Guangzhou 510611,China;
2.SouthChinaUniversityofTechnology,SchoolofCivilEngineeringandTransportation,Guangzhou 510640,China;
3.SouthChinaUniversityofTechnology,StateKeyLaboratoryofSubtropicalBuildingScience,Guangzhou 510640,China;
4.GuangdongEngineeringTechnologyResearchCenterofSafetyandGreenizationfor
WaterConservancyProject,Guangzhou 510640,China)
Abstract:InordertoexploretherainwaterrunoffcontroleffectsofLIDmeasuresunderthedifferentconditions,
bioretention,sunkenlawnandpermeablepavementwereselectedasresearchobjectsandtheHydrus - 1Dmodelsof
theseLIDmeasureswereconstructedtosimulateandanalyzetherainwaterrunoffcontroleffects.Theresultsshow
thatthereisapositivelinearcorrelationbetweentherunoffvolumereductionrateofthebioretentionandcatchment
arearatioandaquiferthickness ,andanegativelinearcorrelationbetweentherunoffvolumereductionrateofthe
bioretentionandsoilthickness (20 - 40cm).Thereisapositivelinearcorrelationbetweentherunoffvolumereduc
tionrateandcatchmentarearatio ,storm - waterinletheightandplantingsoilthicknessofthesunkenlawn.The
runoffvolumereductionrateoftheperviouspavementispositivelycorrelatedwiththerainfalldurationandpermea
bilitycoefficientofperviousbrick ,andnegativelycorrelatedwithcoefficientofrainfront.Itissuggestedthatthe
aquiferheightandplantingsoilthicknessofthebioretentionshouldbe30cm.Thecatchmentarearatioofthesunk
enlawnshouldnotbelessthan15%,thestorm - waterinletheightshouldbe10cm,andtheplantingsoilthick
nessshouldbe30cm.Whenthepermeabilitycoefficientofpermeablebrickisgreaterthan0.291cm?min ,the
rainwaterrunoffgeneratedonpermeablepavementisless.
Keywords:bioretention;sunkenlawn;permeablepavement;controleffectofrainwaterrunoff;Hydrus - 1D
(责任编辑:于福亮)
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