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时间:2019-10-08
《低影响开发(LID)雨水径流控制效果模拟》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第10卷第7期环境工程学报Vol.10,No.72016年7月ChineseJournalofEnvironmentalEngineeringJul.2016低影响开发(LID)雨水径流控制效果模拟*胡作鹏刘志强彭森安志鹏(天津大学环境科学与工程学院,天津300072)摘要随着城市化发展,防洪工程面临严峻挑战,新版《室外排水设计规范》(GB50014-2006)对雨洪系统提出更高要求。为研究降雨径流变化规律,利用SWMM(stormwatermanagementmodel)软件对开发前后场地进行径
2、流模拟,分析径流量变化情况。LID(lowimpactdevelopment)是一种新型的雨洪管理理念,采用雨水源头控制技术,通过滞留、渗透作用,对降雨径流进行控制。LID对雨水径流具有明显的削减和调控作用,能够有效降低城市内涝隐患。为探究LID径流控制效果,以生物滞留池、渗渠、透水路面3种典型LID工程措施为例,模拟不同LID措施对降雨径流控制的效果,探究各措施性能特点。制定LID措施组合方案,模拟其效果,提出合理的LID使用建议。关键词雨洪管理;低影响开发;径流控制;SWMM;模拟中图分类号X
3、799.1文献标识码A文章编号1673-9108(2016)07-3956-05DOI10.12030/j.cjee.201501215Simulationofstormwaterrunoffcontroleffectbylowimpactdevelopment(LID)*HUZuopengLIUZhiqiangPENGSenANZhipeng(SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,Ch
4、ina)AbstractWithincreasesinurbanization,floodcontrolprojectsincitiesarefacinggreatchallenges.Mean-while,aneweditionofregulationstitledCodeforDesignofOutdoorWastewaterEngineering(GB50014-2006)hassetahigherperformancerequirementforstormwatersystems.Inor
5、dertostudythechangeprinciplesofrainfallrun-off,stormwatermanagementmodel(SWMM)softwarewasusedtosimulaterunoffatapre-developmentsiteandpost-developmentsite.Low-impactdevelopment(LID)representsanewsourcecontrolmethodforstormwaterman-agement,andthisappro
6、achintroducesretentionandinfiltrationdevicestocontroltherainfallrunoff.TheuseofLIDtechnologycanleadtolargereductionsinrunoff,thusloweringtherisksoffloodingincities.Inthispaper,threetypesoftypicalLIDapplicationsincludingbio-retentiondevices,infiltratio
7、ntrenches,andpermeablepavements,weresimulatedinordertostudytherunoffcontroleffectofdifferentLIDmethods.Basedonthecharacteristicsofeachapplication,wetestedvariousLIDcombinationschemestosimulatetheeffectsonrunoff,andthen,wepresentoptimizedrecommendation
8、sforLIDengineeringpractices.Keywordsstormwatermanagement;lowimpactdevelopment;runoffcontrol;stormwatermanagementmodel(SWMM);simulation近年来,降雨所带来的城市内涝问题与日俱增,规定,强调地区开发应充分体现低影响开发理念,除每当暴雨来袭,许多大城市面临泄洪不畅、道路积水应执行规划控制的综合径流系数指标外,还应执行[1]等问题,其中更不乏人员伤亡的惨痛经
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