Page 132 - 《水资源与水工程学报》2023年第2期
P. 132

!34 " ! 2 #                       & ' ( ) & * + , -                               Vol.34No.2
               2023 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2023

            DOI:10.11705/j.issn.1672-643X.2023.02.16


            'Ö SWMMhwx6(ûYÙ[÷û< LID¼Ì”ü


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                                         2. i„`( kÊ) „9ó8™é¸ä, kÊ 100044)
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                 A7, Li6CI'\1ٝl、 O0MG、 70€)、 \1ٝl¢˜O0MGY70€)¢˜O0MG 5 ½ LID
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                 T{h¬™{9; \1ٝl¢˜O0MGEzˆT{eÈÔGàâ, 4a*G 0.5~5a ±, ¿Ezñ/Vêh
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                 êhYøù8{lT{hˆÄn¬ÙÊà。LIDEz$i94a*A7™mˆVêeÈ, Øë¢˜Ezwyü
                 £ Œ()„fYÙO0†s,ëìˆ34, ¾£ïŒ“1+1>2” ˆ¨ƒeÎ, Ô`EzW¯‰»6C。
                 >EF: ÁF¥¦; B34H7(LID);SWMM; 70ñ/Vê; øù8T{; >?¦(aI
                 GHIJK:TU992   LMNOP:A    LQRK:1672643X(2023)02012807
                    Rainstorm simulationandLIDeffectevaluationofJinfengDistrict,

                                            YinchuanbasedonSWMM

                                                   1
                                                                 1
                                  1
                                                                                   1
                                                                                               1
                        LIMinghui,HOUJingming,WANGTian,LUANGuangxue,YINYalun,
                                                         1
                                               1
                                                                      2
                                      YANGLu,LIXinyi,FANChao,SHENJian             2
                     (1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,
                      Xi’an710048,China;2.CAUPDBeijingPlanningandDesignCosultantsLtd.,Beijing100044,China)
                 Abstract:Inviewofurbanwaterloggingandnonpointsourcepollution,theSWMMisusedtoestablish
                 astormwatermodelforJinfengDistrictofYinchuanCityfromtheperspectiveofspongecityconstruction.
                 Fivereturnperiodswithadesignrainfallpeakcoefficientof0.4andfourrainfallpeakcoefficientswitha
                 returnperiodof0.5aconstituteatotalofninerainfallevents ,whichareadoptedtoassessthecontrol
                 effectoffiveLIDschemesofconcavegreenspace,permeablepavement,raingarden,thecombinationof
                 concavegreenspaceandpermeablepavement,thecombinationofraingardenandpermeablepavement
                 onrunoffandfourpollutants.Thesimulationresultsshowthattherunoffcontrolrateandpollutantload
                 reductionrateofthefiveschemesdecreasewiththeincreaseofthereturnperiod;concavegreenspace
                 hasthebestperformance ,whenthereturnperiodis0.5-5a,therunoffcontrolrateofeachschemeis
                 greaterthan65%,andthepollutantloadreductionrateisgreaterthan45%;whenthereturnperiodis10
                 a,therunoffcontrolrateandthereductionrateofTSS,COD,TPandTNloadare61.38%,42.86%,
                58.23%,44.03% and55.95%,respectively;whenthereturnperiodis0.5a,withtheincreaseof
                 rainfallpeakcoefficient ,therunoffcontrolrateandpollutantloadreductioneffectofthefiveLIDschemes
                 shownoobviouschanges.TheLIDschemeshaveagoodcontroleffectonrainfallwithmediumandsmall

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