Abstract:Taking the urban waterlogging problem caused by extreme precipitation events in Henan Province in 2021 as the background, and selecting Zhengzhou City as a typical case, the aim is to explore methods for identifying the waterlogging risk in key urban areas in response to the requirements of the national new urbanization construction to enhance urban disaster prevention and mitigation capabilities. By constructing a multi-factor risk assessment model, the focus is on assessing the flood prevention vulnerability of key infrastructure such as medical care and transportation, and the risk identification process is systematically incorporated into the urban planning system. The strategy for urban waterlogging prevention and control based on regional importance classification is proposed, and the applicability of the risk assessment model in improving the waterlogging standards of key infrastructure is verified. The resulting technical methods can provide the scientific basis for waterlogging prevention and control in similar cities.
