Urban waterlogging control and key technology analysis based on the synergy of blue-green-grey infrastructure

Abstract

[Objective] Under the joint influence of various factors such as climate change and urbanization, urban waterlogging disasters occur frequently worldwide, the role of urban blue-green infrastructure in source emission reduction and emergency response to excessive runoff regulation is further highlighted. It is necessary to strengthen the synergy of blue-green-gray infrastructure for urban waterlogging regulation. [Methods] Based on conceptual analysis and water balance, the basic synergy of urban waterlogging control concept of the synergy of blue-green-gray infrastructure was systematically elaborated, typical modes of urban rainwater system construction were sorted out, the key technologies of urban waterlogging control of the synergy of blue-green-gray infrastructure were analyzed, the challenges faced by current urban waterlogging control of the synergy of blue-green-gray infrastructure were analyzed, and the development trend was outlooked. [Results] The concept and typical modes of urban waterlogging control based on blue-green-gray infrastructure synergy were systematically expounded, the typical modes of urban waterlogging control based on blue-green-gray infrastructure synergy were emphatically analyzed, and the basic characteristics, main application areas and conceptual diagrams of the typical model of urban waterlogging control with blue-green-gray infrastructure synergy were analyzed. [Conclusion] Strengthening the synergy of blue-green-gray infrastructure is an important development direction of the urban waterlogging control. In the future, it is necessary to further strengthen the overall planning of blue-green-gray infrastructure, facility optimization and intelligent management and control, and promote the urban rainwater system to expand in the direction of synergy, resilience, low carbon and wisdom.

Keywords

Urban rainwater system / blue-green-gray infrastructure / optimize simulation / intelligent control / urban waterlogging / rainfall / climate change / urban drainage