水土保持通报2024，Vol.44Issue(1)：127-135,9.DOI:10.13961/j.cnki.stbctb.2024.01.014
基于精细化数据的广州市番禺区内涝淹没风险研究
Inundation Risk at Panyu District of Guangzhou City Simulated by Refined Survey and Mapping Data
摘要
Abstract
[Objective]Refined survey and mapping data were used to simulate urban rainfall and runoff processes in order to activate land resource data assets and to promote precise urban flood risk management and control.[Methods]The study was conducted in the Panyu District of Guangzhou City.The SCS-CN runoff model and GIS technology were used to simulate the depth of urban flood inundation under different intensity rainstorm situations on the basis of high-precision topographic and architectural data in order to quantitatively analyze the characteristics of inundation risk in the study area.Additionally,a loss experience model of disaster-bearing bodies was used to assess flood loss risk and to identify highly vulnerable areas.[Results]① The flood inundation risk area in Panyu District was spatially clustered with rivers and low-lying urban areas,and the streets and towns near the Shiqiao-Shawan watershed and the Sanzhixiang-Dashi watershed had higher inundation risks.② Agricultural land and construction land were expected to be most severely affected as the intensities of rainstorms increased.② For the case of a 100-year rainstorm,four planning management units in Panyu District were at high risk of loss,and their losses mainly came from residential buildings,while the units facing medium risk of loss were mainly associated with agricultural land inundation.[Conclusion]Refined survey and mapping data can effectively identify the distribution of high loss areas that are prone to potential inundation.These results are in line with the actual situation.The study results can provide advance research and planning support for urban flood control and sponge city development and construction.关键词
城市内涝/SCS-CN径流模型/测绘调查数据/淹没风险/GIS技术/广州市Key words
urban flood/soil conservation service curve number runoff model/survey and mapping data/inundation risk/GIS technology/Guangzhou City分类
地球科学引用本文复制引用
淦立琴,程铭宇..基于精细化数据的广州市番禺区内涝淹没风险研究[J].水土保持通报,2024,44(1):127-135,9.基金项目
广州市城市规划勘测设计研究院科技资助项目"测绘大数据支持的城市地下空间灾害风险评估与应用"(RDP2220201041) （RDP2220201041）
广东省城市感知与监测预警企业重点实验室资助项目(2020B121202019) （2020B121202019）
广州市资源规划和海洋科技协同创新中心项目(2023B04J0301) （2023B04J0301）
广东省重点领域研发计划资助(2020B0101130009) （2020B0101130009）
