ABSTRACT
ABSTRACT: Based on the complex terrain and large city characteristics, the geographic information of Beijing was cut into 6458 grids and corresponding channels. Focused on the urban hydrodynamic and hydrographic process, the Beijing Urban Waterlogging (BUW) numerical model was built to simulate the ponding depth. Driven by high-resolution precipitation observation, BUW could simulate the spatial distribution of “7.21” urban ponding in Beijing well, and the variation and max depth under concave bridges were close to actual condition too. In the real-time operation from 2012 to 2014, risk warning has effect in advance and can better master the spatial distribution of waterlogging, providing a reference for municipal drainage and transportation departments to launch emergent dispatch vehicles.
