摘要
针对沿海城市日益突出的内涝灾害防治需求,开展基于示踪方法并考虑复杂河网系统水量交换的城市内涝防灾方案研究,以排水分区为分析单元,构建耦合示踪方法的城市内涝模型,显性化城市排水分区间复杂的水量关联性。以海口市龙昆沟排水系统为例,采用PCSWMM构建耦合示踪方法的城市内涝模型,结果表明:模型可定量识别内涝积水来源,得到不同排水分区对关注区域内涝积水的贡献量,有效支撑分区防灾措施规划;基于示踪方法的防灾方案可削减关注区域积水量的36.10%,达到预期内涝整治效果。
In view of the increasing needs for urban flood prevention in coastal cities, a study was performed on the flood mitigation scheme based on the source tracking method. With subcatchments used as the analysis units, the complex water volume correlation between urban subcatchments was investigated through establishment of an urban flooding model for simulation of the urban rainfall-runoff process. With the Longkungou drainage system in Haikou City taken as an example, PCSWMM was used to establish the urban flooding model with the source tracking method, and the results show that sources of accumulated water in the inundation area were identified quantitatively and contribution ratios of different subcatchments to the accumulated water in the inundation area could be obtained by the model, which provided a basis for the selection of reasonable flood mitigation measures for different subcatchments. The implementation of the flood mitigation scheme formulated based on source tracking results can reduce the accumulated water amount by 36.10% in the serious inundation area, achieving the desired effect of flood mitigation.
作者
马超
赵凯
齐文超
陈姿帆
许红师
MA Chao;ZHAO Kai;QI Wenchao;CHEN Zifan;XU Hongshi(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《水资源保护》
CAS
CSCD
北大核心
2022年第1期91-99,共9页
Water Resources Protection
基金
国家自然科学基金(51679159,51722906)。
关键词
城市内涝
示踪方法
PCSWMM
致灾机理
防灾方案
海口市
urban flood
source tracking method
PCSWMM
disaster-causing mechanism
flood mitigation scheme
Haikou City
