摘要
为科学评估平原水网地区内涝治理效果,以昆山市淀山湖镇为研究对象,基于MIKE FLOOD模型,耦合一维河网、二维地形和一维管网模拟了平原水网地区城镇内涝情况。采用实测降雨数据对模型进行了率定和验证,并模拟了2年一遇、5年一遇、10年一遇和20年一遇4种重现期降雨条件下现状和治理后的最大淹没水深。模拟结果表明:20年一遇降雨条件下内涝范围变化明显,其余3种重现期降雨条件下内涝范围变化不明显;对于降雨重现期较小条件下的城市内涝治理,应优先考虑管网改造,而针对短历时的强暴雨事件,应优先考虑海绵城市设施建设改造;为了应对不同重现期、短历时降雨造成的城市内涝风险,应在管网改造的基础上配合海绵城市设施建设改造。
To scientifically evaluate the effectiveness of waterlogging control in plain water network areas,taking Dianshanhu Town in Kunshan City as a study area,the MIKE FLOOD model,which integrates a one-dimensional river network,a two-dimensional terrain,and a one-dimensional drainage network,was used to simulate urban flooding in the plain water network area.The model was calibrated and validated using observed rainfall data,allowing for accurate simulations of maximum inundation depths in current situation and after treatment under four different rainfall return periods:2-year,5-year,10-year,and 20-year events.The simulated results indicate that the inundation area changes significantly under the 20-year return period,while it shows no substantial variation under the other three return periods.For urban waterlogging control under smaller rainfall return periods,priority should be given to upgrading drainage networks,while for intense short-duration storms,the construction of sponge city facilities should take precedence.To address urban flood risks caused by various return periods and short-duration rainfall,a combination of drainage system upgrades and sponge city facilities is recommended.
作者
侯俊
陈诚
郑玉磊
丁伟
时间
苗令占
HOU Jun;CHEN Cheng;ZHENG Yulei;DING Wei;SHI Jian;MIAO Lingzhan(Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)
出处
《水利水电科技进展》
CSCD
北大核心
2024年第6期41-47,70,共8页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金项目(52370164)
江苏省重点研发计划项目(BE2022834)。
