Journal
URBAN WATER JOURNAL
Volume 13, Issue 8, Pages 830-840Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1573062X.2015.1041991
Keywords
coupled 1D; 2D modelling; displacement of manhole cover; manhole surcharge; urban flooding
Categories
Funding
- DFG - Deutsche Forschungsgemeinschaft [GZ: LE 3220/1-1]
- EPSRC [EP/F037422/1] Funding Source: UKRI
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In urban areas, overloaded sewers may result in surcharge that causes surface flooding. The overflow from sewer systems mainly starts at the inlets until the pressure head in the manhole is high enough to lift up its cover, at which stage the surcharged flow may be discharged via the gap between the bottom of the manhole cover and the ground surface. In this paper, we propose a new approach to simulate such a dynamic between the sewer and the surface flow in coupled surface and sewer flow modelling. Two case studies are employed to demonstrate the differences between the new linking model and the traditional model that simplifies the process. The results show that the new approach is capable of describing the physical phenomena when manhole covers restrict the drainage flow from the surface to the sewer network and reduce the surcharge flow and vice versa.
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