基于SWMM模拟的城市内河区域雨水径流和水质分析

水利水电技术第43卷2012年第8期基于SWMM模拟的城市内河区域雨水径流和水质分析吴建立1，孙飞云1’_．董文艺1⋯，王宏杰1，2(1．哈尔滨工业大学深圳研究生院，广东深圳518055；2．深圳市城市废弃物公共技术服务平台，广东深圳518055；3．深圳市水资源利用和环境污染控制重点实验室，广东深圳518055)摘要：利用SwMM模型对城市内河典型区域(清湖周边区域)暴雨径流及水质进行模拟，考查不同重现期和不同透水面积条件下暴雨径流及水质随时间的变化关系。结果表明：随着重现期和透水面积的增大，地表的渗透能力下降，径流总量和径流峰值都增大，增长幅度逐渐减少。而且，污染物浓度，随着重现期和透水面积的增大，都呈现出前期逐渐增大，中期出现峰值，后期逐渐减小的趋势，污染物冲刷效果越明显。重现期小、城市化进程快的区域，地表渗透能力减弱，径流峰值和径流总量上升．洪涝灾害风险加大。关键词：SWMM模型；重现期；不渗透面积；暴雨模拟；径流模拟；水质模拟中图分类号：P333(265)文献标识码：B文章编号：l000—0860(2012)08-0090—05SWMMsimlllationba∞da叫ysisonrai删I硼。仃andwaterqual蚵耐thjnllrbaninlandnverareaWUJianlil，SUNFeiyunl”，DONGWenyil”，WANGHon西iel’2(1．ShenzhenGraduateSchoolofHarbinInstituteofTechnolog)r，SheIlzhen518055，Gu锄羽ong，China；2．shenzllenPublicPla怕册forTechniquesenriceinUrbanWasteReuseaIldEnerg)rRecovery，Shenzhen518055，Guangdong，China；3．Shen2henKeyLaboratoryofwaterResourceApplicationandEnvironmentalPoUutioncontrol，SherIzhen518055，Guangdong，China)Abstract：BasedonsWMM(Sto玎nwaterManagementM0del)，thestommn罐aTldwaterqualityinthetypicalarea(amundcle粕waterlake)of山．baninlandriveraresimlllatedherein；inwhichtherelationshipbetweensto册mno行andwaterquali哆asafunctionofti硼eisex跚inedundermeconditionsofv撕ousretumperjods卸dpemeableareas．Theresultshowsmatthepe瑚ea—bmtyofgmundsud-aceistobedecre踮ed，whiletIletotalmno行锄ditspeal【valuearetobeincre鹊edwiththegraduaIdecreaseoftheincrememamplitudealong诵t11theincreasesofbotlltheretumperiodandthepe姗eableare&Moreover，along诵thtlleincreasingofbotlItlleretuHlperiodandpeHIleablearea，theconcentmtionofpoUutantpresentsthetrendthatitgraduaUyincrea-sesinthefore—period，peaksupinthemid-periodandthen伊aduaUydecreaLsesinthelate—periodwithmoreandmoreobviousnushinge&ct0fpouutant．Fortheareawithshonret唧periodandquickurb彻izationpmcess，thepe珊eabilityofgmundsu卜faceistobedecreasedalong稍tlltheIiseoft11epeakvalueandtot且lmnoff，therefore，tlleriskoff捌粕dwatel’log舀ngistobeincreasedasweU．Keywo“ls：SWMMModel；retumperiod；imperviousa鹏a；storIllsimulation；mno丘simulation；waterqualitysimulation城市化进程加快，洪涝灾害风险、面源污染都已成为了城市发展中不得不解决的问题。本文利用swMM模型对