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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


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