To address the operational demands of flood prevention and drainage in high-density urban areas

this study develops an integrated forecasting and scheduling model system tailored to the “four-pre” framework—forecasting

early warning

rehearsal

and contingency planning. The system comprises four core components:( 1) a flood forecasting model that incorporates a three-dimensional water exchange mechanism linking river channels

drainage networks

and surface runoff;( 2) an AI-powered flood prediction model;( 3) a joint regulation model for hydraulic infrastructure; and( 4) a real-time emergency resource allocation model. Building upon this system

a digital platform is further developed to enable rapid simulation and refined visualization of urban flooding. This platform leverages a selectively driven multi-path urban water flow simulation method and advanced 3D visualization technologies based on texture mapping and Shader rendering. The proposed framework and platform offer practical tools and technical references for advancing intelligent flood resilience in densely populated cities.