Research on"Four Preventions"model for flood control in small watersheds of China's islands
China's islands,characterized by unique climatic and surface conditions,differ significantly from inland areas in flood control within small watersheds.To enhance the flood control capabilities of small island watersheds,this study employs digital twin technology to construct a data platform,integrate data resources,develop digital scenarios,and build a hydrological-hydrodynamic coupled model to simulate flood evolution processes.A"Four Preventions"system for flood control was developed and applied to a representative small watershed on Daishan Island,the Fengshu watershed.Simulations of storm-flood scenarios under various return periods enabled preliminary achievements in forecasting,early warning,rehearsal,and planning for small watershed flood control.The findings reveal that the current flood control system in the study area struggles to withstand floods with a return period exceeding 30 years,highlighting the need for stronger flood and drought disaster defense systems.The results effectively predict and simulate flood processes in small island watersheds and provide technical support for constructing the"Four Preventions"flood control system on islands.
"Four Preventions"for flood controlsmall island watershedsdata platformhydrological-hydrodynamic model
万方数据
