Proceedings of the
8th International Symposium on Geotechnical Safety and Risk (ISGSR)
14 – 16 December 2022, Newcastle, Australia
Editors: Jinsong Huang, D.V. Griffiths, Shui-Hua Jiang, Anna Giacomini, Richard Kelly
doi:10.3850/978-981-18-5182-7_20-005-cd
Flood Risk Assessment of Offshore Artificial Islands Induced by Heavy Rainfall
1State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macao SAR, People's Republic of China
2Hong Kong-Zhuhai-Macao Bridge Authority, Zhuhai, China
3Center for Ocean Research in Hong Kong and Macau (CORE), Hong Kong SAR, China
ABSTRACT
Our study area is the west artificial island of the immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge. The offshore artificial island is created by reclaiming land, and it serves as a critical link between the subsea tunnel and the bridge. Heavy rainstorms may result in flooding of the artificial island, which threaten the safety of traffic on the island. Our study is mainly about flood disasters and assessing the damage to cars on the artificial island. The coupled hydrodynamic model of the artificial island is created to simulate flood disasters for three return periods of rainfall. The maximum flood depth distribution and car damage are analyzed for rainfall scenarios. The method described in this paper would provide technical support for offshore engineering flood prevention and risk assessment.
Keywords: Flood risk assessment, Offshore artificial island, Rainfall, Hydrodynamic model
