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1、透水砖铺装地面垫层结构对城市雨水入渗过程的影响侯立柱I冯绍元I韩志文2张书函彳丁跃元彳（11中国农业大学水利与土木工程学院，北京100083;21北京市大兴区水务局，北京102600；31北京市水利科学硏究所，北京100044）摘要为了给透水砖铺装系统综合排水设计提供依据,建立了透水砖铺装讐面物理模型，采水砖铺装结构形式（垫层由不同耳度的无砂混凝土、中砂、砂砾料组合而成）邈行了廚以降雨条拝击爾条沁礙t程试验研究。结果表明:降雨过程中超渗的水流形成表层流，其水分延績入嫁僅施竝壤水劳継鹼勧0詡审躺在模拟降雨1h，强度59136mm/h的情况下产流量均为0，下袴葷睡附百整崖牽燈翟度
2、涵疔育土壤初始含水率呈反比；在模拟降雨2h，强度59136mm/h的悄况下（相骞理雉L必誌矗爺禺，透水砖铺装地面处理I（垫层结构自上而下为中砂10cm、砂砾料20cm），入渗效果最稅血蒔免地面产流。对于新建居民小区、遛各、园林绿化等领域布置综合排水系统，以及那些现有排水系统超载严巫，难以进行管网改建或改建代价过高的区域，用透水砖铺装地面取代不透水铺面是减少城市地面淹水频次和涝灾程度的良好途径之一。矢键词透水砖铺装路（地）面；垫层；路基；人工降雨；水分入渗中图分类号TV12;S27311;TU9911114文章编号100十4333（2006）（片00831）6文献标识码AExp
3、erimentalstudyonimpactsofinfiltrationtreatedwithporouspavementHouLizhu1,FengShaoyuan1,HanZhiwen，,ZhangShuhan",DingYueyuan'（1.CollegeofWaterConservancyandCivilEngineering,ChinaAgriculturalUniversity,Beijing100083,China;2・BeijingDaxingWaterResourcesBureau,Beijing102600、China;3・BeijingHydrauli
4、cResearchInslilule,Beijing100044,China）AbstractFouravailableporouspavementsystemswerestudiedtoevaluatetheirinfiltrationcapabilitiesofprccipita2tion・Theexperimentswereconductedtosimulatedifferentkindsofporouspavementswithdifferentsub2basematerialsineachofcatchments,andthedischargevolumesfrom
5、eachcellweremonitored.Therelationshipbetweenrainfallin2tensity,outflowandoutflowdurationwasanalyzed.Physicalmodelswereestablishedinthelaboratory.Becauseofstorageofsub2basc,theinfiltrationformssubsurfaccflowintheporousconcreteblockpavingandsub2basc,whichin2creaseinfiltrationintosubgradeafter
6、rainfall・Theresuksshowedthattherunoffcoefficientsofalltreatmentswere0un2derarainfallrateof59136mm/h,andtheinfiltrationcoefficientofporouspavementwasindirectproportionwithporosi2tyandinverseproportionwithsoilmoisture・Inalltreatments,theoptimumthicknessof（heporouspavementis362cmthatconsisteso
7、fa62cmporoussurfacecourseanda302cmsub2base（102cmsandsand202cmgravel）・Whenrainfallrateis59136mm/h,andthelastingtimeis2hours,themnoffcoefficientoftreatmentIis0.Inconditionofbuildingnewresidentialarea,pavements,parks;andrebuildingformeroveragedrainagesystem
