A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model
With the intensification of global climate change, the underground rail transit system of Guangzhou, as a major coastal city, faces severe flood risks. Through field investigations of 313 metro stations, this study identified 472 flood-related risk points, primarily involving water backflow at low-l...
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MDPI AG
2025-05-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/10/1689 |
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| author | Xin Chen Hongyu Kuai Xiaoqian Liu Bo Xia |
| author_facet | Xin Chen Hongyu Kuai Xiaoqian Liu Bo Xia |
| author_sort | Xin Chen |
| collection | DOAJ |
| description | With the intensification of global climate change, the underground rail transit system of Guangzhou, as a major coastal city, faces severe flood risks. Through field investigations of 313 metro stations, this study identified 472 flood-related risk points, primarily involving water backflow at low-lying stations, insufficient elevation of structural components, and the threat of overbank flooding from adjacent rivers. By integrating GIS-based spatial analysis with the SCS-CN runoff model, an extreme rainfall scenario (534.98 mm) was simulated, revealing a maximum runoff depth of 484.23 mm. Based on these results, it is recommended to raise the flood protection design elevation to 582 mm and install additional waterproof barriers. Optimization strategies include establishing flood protection standards for new stations based on site topography and runoff volume, elevating station platforms or adding waterproof structures at existing stations, and upgrading drainage systems with real-time monitoring and early-warning mechanisms. This study emphasizes the necessity for Guangzhou’s metro system to integrate climate-adaptive urban planning and technological innovation to enhance flood resilience and promote sustainable urban development. |
| format | Article |
| id | doaj-art-9e286135e60646d29e3e9a93dbaaaffc |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-05-01 |
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| series | Buildings |
| spelling | doaj-art-9e286135e60646d29e3e9a93dbaaaffc2025-08-20T01:56:20ZengMDPI AGBuildings2075-53092025-05-011510168910.3390/buildings15101689A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN ModelXin Chen0Hongyu Kuai1Xiaoqian Liu2Bo Xia3Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510010, ChinaSchool of Architecture, Chang’an University, Xi’an 710064, ChinaSchool of Architecture, Chang’an University, Xi’an 710064, ChinaSchool of Architecture, Chang’an University, Xi’an 710064, ChinaWith the intensification of global climate change, the underground rail transit system of Guangzhou, as a major coastal city, faces severe flood risks. Through field investigations of 313 metro stations, this study identified 472 flood-related risk points, primarily involving water backflow at low-lying stations, insufficient elevation of structural components, and the threat of overbank flooding from adjacent rivers. By integrating GIS-based spatial analysis with the SCS-CN runoff model, an extreme rainfall scenario (534.98 mm) was simulated, revealing a maximum runoff depth of 484.23 mm. Based on these results, it is recommended to raise the flood protection design elevation to 582 mm and install additional waterproof barriers. Optimization strategies include establishing flood protection standards for new stations based on site topography and runoff volume, elevating station platforms or adding waterproof structures at existing stations, and upgrading drainage systems with real-time monitoring and early-warning mechanisms. This study emphasizes the necessity for Guangzhou’s metro system to integrate climate-adaptive urban planning and technological innovation to enhance flood resilience and promote sustainable urban development.https://www.mdpi.com/2075-5309/15/10/1689flood prevention designmetro stationsextreme rainfallflood risk |
| spellingShingle | Xin Chen Hongyu Kuai Xiaoqian Liu Bo Xia A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model Buildings flood prevention design metro stations extreme rainfall flood risk |
| title | A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model |
| title_full | A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model |
| title_fullStr | A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model |
| title_full_unstemmed | A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model |
| title_short | A Flood Prevention Design for Guangzhou Metro Stations Under Extreme Rainfall Based on the SCS-CN Model |
| title_sort | flood prevention design for guangzhou metro stations under extreme rainfall based on the scs cn model |
| topic | flood prevention design metro stations extreme rainfall flood risk |
| url | https://www.mdpi.com/2075-5309/15/10/1689 |
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