Response to urban waterlogging control under different topographic conditions
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Date
2024
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AESOP
Abstract
In recent years, the acceleration of urbanization and the occurrence of intense rainfall have led to urban waterlogging, resulting in property damage and threats to human life. The development of flood resilient infrastructure systems is therefore crucial. However, achieving this goal can be challenging in high-density urban areas due to land resource constraints. This study proposes a framework based on local human wisdom that can withstand, absorb and recover from floods in a timely manner to enhance flood resilience in the urban design process. In this study, we analyzed the hydrological characteristics of Zhengzhou City and constructed a rainfall and flood security pattern using GIS and hydrological models. Corresponding bluegreen solutions were determined for different topographic conditions. Finally, a macro-scale rainfall and flood mitigation program was designed and its effectiveness was evaluated using the Storm Water Management Model (SWMM). The results show that the Blue-Green program created 40,000 cubic meters of rainwater storage, resulting in significant economic benefits for the community. This approach can improve the flood resilience of inland cities, particularly in response to heavy rainfall and river flooding.
Keywords：urban waterlogging; topographic conditions; flood resilience; Blue-Green solutions; SWMM
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Game changer? Planning for just and sustainable urban regions, Paris, 8-12th July 2024
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CC-BY