Details

Autor(en) / Beteiligte

• Dong, Xin
• Guo, Hao
• Zeng, Siyu

Titel

Enhancing future resilience in urban drainage system: Green versus grey infrastructure

Ist Teil von

• Water research (Oxford), 2017-11, Vol.124, p.280-289

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2017

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• In recent years, the concept transition from fail-safe to safe-to-fail makes the application of resilience analysis popular in urban drainage systems (UDSs) with various implications and quantifications. However, most existing definitions of UDSs resilience are confined to the severity of flooding, while uncertainties from climate change and urbanization are not considered. In this research, we take into account the functional variety, topological complexity, and disturbance randomness of UDSs and define a new formula of resilience based on three parts of system severity, i.e. social severity affected by urban flooding, environmental severity caused by sewer overflow, and technological severity considering the safe operation of downstream facilities. A case study in Kunming, China is designed to compare the effect of green and grey infrastructure strategies on the enhancement of system resilience together with their costs. Different system configurations with green roofs, permeable pavement and storage tanks are compared by scenario analysis with full consideration of future uncertainties induced by urbanization and climate change. The research contributes to the development of sustainability assessment of urban drainage system with consideration of the resilience of green and grey infrastructure under future change. Finding the response measures with high adaptation across a variety of future scenarios is crucial to establish sustainable urban drainage system in a long term. •A new formulation of resilience in urban drainage system was presented.•Both green and grey infrastructures could improve the system resilience.•Green roof and permeable pavement would have higher adaptability and resistibility.•There is a game for the green and grey infrastructure selection.