基于耦合模型的城市流域洪涝灾害治理研究——以广州某片区为例  

Flood Disaster Control in Urban Watersheds Based on a Coupled Model-A Case Study of a Region in Guangzhou

作　　者：朱必方 高焱哲 赖成光[2] ZHU Bifang;GAO Yanzhe;LAI Chengguang(Guangzhou Hongtao Water Survey and Design Co.,Ltd.,Guangzhou 510405,China;School of Civil Engineering&Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广州市宏涛水务勘测设计有限公司,广东广州510405 [2]华南理工大学土木与交通学院,广东广州510640

出　　处：《人民珠江》2022年第11期60-67,共8页Pearl River

基　　金：广东省自然科学基金面上项目(2022A1515010019);广东省水利科技创新项目(2020-28)。

摘　　要：城市洪涝灾害已成为影响城市发展的最主要的灾害之一,对其进行研究具有重大的现实意义。以广州某片区为例,基于流域系统整体观构建综合考虑河道、管网和地表的耦合水动力模型,并利用模型分析采取洪涝防治措施前后的效果。结果表明:①模拟风险点与静态洪涝风险图的风险点基本一致,表明所构建的耦合模型结果较为合理;②现状条件下,研究区遭遇100年一遇暴雨存在较高的洪涝风险,急需采取相应措施减缓该地区洪涝风险;③通过实施管网改造和泵站扩建等改造措施,可较好缓解研究区洪涝风险,表明改造方案较为合理。通过对横沙涌河口泵站的改建,有效减缓了横沙涌下游段的内涝情况,表明从流域整体观出发考虑流域洪涝灾害治理更加科学合理。Urban flood disasters have become one of the major disasters affecting urban development.Therefore,studying urban flood disasters is of great practical significance.Taking a region in Guangzhou as an example,this study constructs a coupled hydrodynamic model that comprehensively considers the rivers,the pipe network,and the surface under a holistic view of the watershed system to evaluate the effect before and after flood control measures.The results suggest the following conclusions:①The simulated risk points are basically consistent with those in the static flood risk map,indicating that the results of the constructed coupled model are reasonable.②Under the current conditions,the study area is exposed to a high flood risk in the case of a once-in-a-century rainstorm,and corresponding measures should therefore be taken urgently to mitigate the flood risk in this area.③The implementation of reconstruction measures,such as pipe network reconstruction and pump station expansion,well alleviates the flood risk in the study area,indicating that the reconstruction scheme is reasonable.The reconstruction of the pump station at the Hengsha Chong Estuary effectively mitigates the waterlogging in downstream Hengsha Chong,which proves that approaching flood disaster control in the watershed from a holistic view of the watershed is more scientific and reasonable.

关 键 词：城市洪涝 数值模拟 SWMM LISFLOOD-FP 模型耦合 

分 类 号：TU992[建筑科学—市政工程]