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< LID¼Ìü
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7jº , hij , 0 m , »¼½ , ¾1¿ , À , 7ÁÂ , Ã , y Ä
(1. <êW2\& rhst<kHIDo01uv45wxy, B< <ê 710048;
2. i`( kÊ) 9ó8é¸ä, kÊ 100044)
C D: õ$¥¦ËóY5Køù, ÁF¥¦tó7, Ð>?¦(aIG6CI, ÷f
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A7, Li6CI'\1Ùl、 O0MG、 70)、 \1Ùl¢O0MGY70)¢O0MG 5 ½ LID
Ez\$ñ/Y 4 ½øù8VêeÈ。|ÇÈÉÊ: íî4a*A\,5 ½Ezñ/VêhYøù8{l
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G61.38%、42.86%、58.23%、44.03%Ó 55.95%; 4a*G 0.5a ±, íî7ðUA\,5 ½ LIDEzñ/V
êhYøù8{lT{hÄn¬ÙÊà。LIDEz$i94a*A7mVêeÈ, Øë¢Ezwyü
£ ()fYÙO0s,ëì34, ¾£ï“1+1>2” ¨eÎ, Ô`EzW¯»6C。
>EF: ÁF¥¦; B34H7(LID);SWMM; 70ñ/Vê; øù8T{; >?¦(aI
GHIJK:TU992 LMNOP:A LQRK:1672643X(2023)02012807
Rainstorm simulationandLIDeffectevaluationofJinfengDistrict,
YinchuanbasedonSWMM
1
1
1
1
1
LIMinghui,HOUJingming,WANGTian,LUANGuangxue,YINYalun,
1
1
2
YANGLu,LIXinyi,FANChao,SHENJian 2
(1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,
Xi’an710048,China;2.CAUPDBeijingPlanningandDesignCosultantsLtd.,Beijing100044,China)
Abstract:Inviewofurbanwaterloggingandnonpointsourcepollution,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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