Author(s): Haowen Wang; Xiaoxiang Zhang; Kejian Zhang; Ying Wang; Zhaoxu Shi; Qiang Ma
Linked Author(s): Ying Wang, Qiang Ma
Keywords: Digital twin distributed hydrological model modelling strategy catastrophic flood
Abstract: Climate change and increase of human activities continuously enhancing the challenges of basin flood defence and prevention. With one digital twin platform of basin flood prevention, the local manager would receive more detailed information of the real-time flood processes and the forecast of its future evolution. Taking the "23·7" catastrophic flood of Yongding River Basin as an example, this paper has applied Chinese distributed hydrological and hydrodynamic models for representing and analysing the flood processes. Those models with various spatial precision were constructed to separately simulate the flood processes in three parts of the basin. The simulation results have indicated that the Guanting-Shanxia region is the main flow generation area during this flood event, with obviously higher rainfall-runoff coefficient compared to other areas of the catchment. The models applied in this study were able to quantitatively represent the variation of different flow components during the event. And the modelling strategy applied in this study was efficiently represent the whole flood process in detail in time and space. The hydroinformatics application presented in this study can be used as a technical reference to guide the implementation of digital twin in other river basins.
Year: 2025