摘要
随着海绵城市建设的持续推进,如何准确评估海绵城市建设的效果备受关注。虽然国家已出台《海绵城市建设评价标准》(GB/T 51345—2018),但目前仍缺乏系统监测数据及定量化评估的实践案例及相关经验。为此,选取深圳市坝光西侧片区为研究区域,在源头项目和典型排水分区的雨水排放口设置在线流量计,定量评估海绵城市建设设施在项目和排水分区尺度的径流控制效果;基于暴雨洪水管理模型(Storm Water Management Model,SWMM)构建研究区模型,结合监测数据率定模型参数,采用多情景模拟,评估研究区海绵城市建设的整体效果。评估结果表明,源头项目和排水分区的实际径流总量控制均满足规划目标要求,通过海绵城市建设,区域径流总量、洪峰流量及内涝积水均得到有效控制。上述研究成果可为我国滨海地区海绵城市模型参数选取和建设效果评估提供参考。
With the continuous development of sponge city construction,accurately assessing the effect of sponge city construction attracts a lot of attention recently.Although a national standard titled Assessment Standard for Sponge City Construction Effect has been published,there is a lack of systematic monitoring data,practical cases and relevant experience for quantitative assessment.Therefore,taking west catchment of Baguang in Shenzhen as the study area,online flowmeters were installed at the rainwater outlets of source control projects and a typical catchment to quantitatively assess the runoff control effect of sponge city facilities at both project and catchment scale.Based on SWMM(Storm Water Management Model),the study area model was constructed,and the model parameters were calibrated with monitoring data.The overall effect of sponge city construction in the study area was evaluated by multi-scenario simulation.The results show that source control projects and typical catchment meet the requirements of runoff volume control.Through the construction of sponge city,the total amount of regional runoff,peak flow and waterlogging have been effectively controlled.The above research results can provide reference for parameter selection and construction effect evaluation of coastal sponge city model.
作者
邓立静
李炳锋
杨可昀
DENG Lijing;LI Bingfeng;YANG Keyun(Urban Planning and Design Institute of Shenzhen,Shenzhen 518000)
出处
《中国防汛抗旱》
2021年第5期7-11,29,共6页
China Flood & Drought Management
关键词
海绵城市
径流控制
内涝治理
在线监测
模型模拟
sponge city
runoff control
flood management
online monitoring
model simulation
