极端降雨下绿基和灰基联用的雨洪控制效果  

Urban stormwater and flood control effect of green and grey infrastructures under extreme rainfall conditions

作　　者：郑鹏[1,2] 王蓓蕾[1] 陈子杰 潘文斌 黄建辉[4] ZHENG Peng;WANG Bei-lei;CHEN Zi-jie;PAN Wen-bin;HUANG Jian-hui(College of Environment and Resources,Fuzhou University,Fuzhou 350108,China;Key Laboratory of Ecological Environment and Information Atlas Fujian Provincial University,Putian University,Putian 351100,China;Fujian Environmental Protection Design Institute Co.,Ltd.,Fuzhou 350012,China;Fujian Provincial Key Laboratory of Ecology-Toxicological Effects and Control Techniques of Emerging Contaminants,Putian 351100,China)

机构地区：[1]福州大学环境与资源学院,福建福州350108 [2]莆田学院生态环境及其信息图谱福建省高等学校重点实验室,福建莆田351100 [3]福建省环境保护设计院有限公司,福建福州350012 [4]福建省新型污染物生态毒理效应与控制重点实验室,福建莆田351100

出　　处：《中国环境科学》2019年第5期2123-2130,共8页China Environmental Science

基　　金：国家重点研发计划(2016YFC0502905);生态环境及其信息图谱福建省高等学校重点实验室(莆田学院)开放经费资助课题(ST18005)

摘　　要：以福州大学为例,选取3种绿色基础措施(绿色屋顶、植被浅沟、渗透铺装)与2种灰色基础设施(增大管径、蓄水池)组合,设计了9种雨水系统改造措施方案,并根据3场不同历时极端天气降雨的实测数据,运用暴雨洪水管理模型(SWMM)模拟分析不同雨水系统改造措施方案对径流深、节点和管道的雨洪控制效果.情景模拟结果表明:3场强降雨下,绿色基础措施组合(SS7)在所有用地布局情景中对径流深的控制效果均为最优,其中中长历时强降雨下的削减比最高,达到了78%;在节点控制方面,由于3种绿色基础措施与增大管径组合措施(SS8)具备下渗、滞留和快排等特性,在3场降雨中,对节点的洪流流量和洪流时间的控制效果均为最优,接近100%;在管道控制方面,3种含绿色基础措施的组合方案(SS7,8,9)对管道满流时间与峰值流量发生时间的控制较好.通过对比这3种组合措施方案发现,在短历时强降雨中,3种绿色基础措施与蓄水池组合措施方案下(SS9)管道满流时间最短,峰值流量发生时间最迟;中长历时强降雨中3者差别不大;长历时强降雨中3种绿色基础措施组合下(SS7)管道满流时间最短,峰值流量发生时间最迟.3 universal green infrastructures(green roof, vegetative swale and permeable pavement) and 2 grey infrastructure mitigations(large diameter tube & reservoir) were selected to design 9 types of storm water drainage system modification scenarios in Fuzhou University campus. Under different extreme weather conditions(3 recorded rainfall events with different duration), SWMM model was used to analyze urban stormwater and flood control effect under different simulation scenarios(SS1~SS9). The control effect included runoff depth, node J8 flood flow and flood time, peak time and full flow time in C8 pipeline. The simulations results showed that simulation scenarios including green infrastructure had better control effect.Compared to other simulation scenarios, combinations of green roofs, vegetative swales and continuous permeable pavement systems(SS7) exhibited the best control effect on runoff depth under 3 rainfall events, the reduction ratio under the middle duration rainfall event was the highest, reaching 78%. While combinations of green roofs, vegetative swales, continuous permeable pavement systems and large diameter tubes(SS8, with the characteristics of infiltration, retention and quick drainage) displayed the best control effect on node J8 flood flow and flood time under 3 rainfall events, reaching 100%. On the pipe flood control aspect, three combinations including green roofs, vegetative swales, continuous permeable pavement systems(SS7, SS8 and SS9) had a better effect on peak flow and full flow time in C8 pipeline than other simulation scenarios.Combinations of green roofs, vegetative swales, continuous permeable pavement systems and reservoirs(SS9) had the minimum full flow time and latest peak time in the short duration rainfall event. Combinations of green roofs, vegetative swales and continuous permeable pavement systems(SS7) had the minimum full flow time and latest peak time in the long duration rainfall event. Three combinations(SS7, SS8 and SS9) had no distinct differences on pipeline flood contr

关 键 词：绿色基础措施 灰色基础措施 SWMM模型 极端天气 雨洪控制 

分 类 号：X32[环境科学与工程—环境工程]