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Article
Author(s)
Dake Xu1, Yimeng Cui1 and Nian She2
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DOI:10.17265/2162-5263/2022.03.002
Affiliation(s)
1. China Urban Construction Design & Research Institute, Beijing 100010, China
2. Tsinghua University Innovation Center in Zhuhai, Zhuhai, 51080 China
ABSTRACT
Is GI (Green Infrastructure) viable to mitigate urban pluvial flood caused by extreme storm events? Limited research and planning have been undertaken in recent years, but little practice has been found in the real world. This retrospective study provides an example of mitigating pluvial flood by LID (Low Impact Development) principal and practices and transforming an old, ultra-dense low-income community into a climate change resilient community. The key findings include keeping flood control in mind when designing GI in the beginning; mimicking the sites’ hydrologic characteristics as much as possible; outreaching to residences for maintenance issues from the beginning and monitoring the performance of GI facilities continuously. Technically, bioretention growing media with higher infiltration rate is specified that must be great than 150 mm/h in short term and 80 mm/h for long term; this paper chose low maintenance permeable pavement products avoiding clogging; and increasing parking space without compromising the design goals.
KEYWORDS
GI, LID, sponge city, pluvial flood, climate change, resiliency.
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