摘要
以广州市天河智慧城为研究对象开展降雨、径流和水质同步监测,基于SWMM模型构建包含低影响开发措施调控作用的城市雨洪模型,通过监测数据对模型参数率定验证,模拟分析不同降雨条件下,LID措施在自然状态、半饱和状态和饱和状态三种典型前期条件下对径流和污染物控制及削减效果。结果表明,不同重现期降雨下,LID三种状态下的径流控制率均呈现出随降雨重现期增大而减小的变化趋势,其中LID自然状态的径流控制率最高,而LID饱和状态径流控制率削减在各降雨重现期下差别不大。与LID措施自然状态相比,在不同重现期下LID半饱和状态及饱和状态下径流峰值和污染物削减均降低。研究LID措施不同前期状态条件下对径流和污染物的控制效果,能够为LID措施的设计提供科学的决策依据,并为后期的运行管理提供指导。
A storm water management model(SWMM) is conducted on the basis of model calibration and validation with synchronized monitoring data of rainfall,runoff water quantity and quality in Tianhe Wisdom City. The SWMM model is applied to simulate LID in natural,semi-saturation and saturation conditions of runoff control and contaminant reduction in different rainfall return periods. The results indicate that the runoff control rate of all LID conditions decrease with rainfall return period increasing,the highest runoff control rate is natural LID condition,saturation LID condition shows not significant variation in different rainfall return periods. Compared with natural LID condition,the rate of runoff peak discharge and contaminant control decrease in semi-saturation and saturation LID condition. The investigation of different initial LID conditions can provide guidance for the LID planning,designing and operation management.
作者
张瀚
邱静
黄本胜
杨志峰
蔡宴朋
ZHANG Han;QIU Jing;HUANG Ben-sheng;YANG Zhi-feng;CAI Yan-peng(Guangdong Research institute of Water Resources and Hydropower,Guangzhou 510635,Guangdong Province,China;Institute of Environmental and Ecological Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong Province,China)
出处
《中国农村水利水电》
北大核心
2022年第10期12-19,共8页
China Rural Water and Hydropower
基金
粤港水安全保障联合实验室项目(2020B1212030005)。
关键词
暴雨洪水管理模型
低影响开发
不同前期状态
径流和污染物控制
径流峰值削减
storm water management model
Low impact development
different initial conditions
runoff and contaminant control
runoff peak discharge
作者简介
张瀚(1992-),男,博士,主要从事气候变化和城市洪涝方面研究。E-mail:zhanghangdsky@outlook.com。
