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| Titel |
Development of flood probability charts for urban drainage network in coastal areas through a simplified joint assessment approach |
| VerfasserIn |
R. Archetti, A. Bolognesi, A. Casadio, M. Maglionico |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 15, no. 10 ; Nr. 15, no. 10 (2011-10-11), S.3115-3122 |
| Datensatznummer |
250012990
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| Publikation (Nr.) |
 copernicus.org/hess-15-3115-2011.pdf |
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| Zusammenfassung |
| The operating conditions of urban drainage networks during storm events
depend on the hydraulic conveying capacity of conduits and also on
downstream boundary conditions. This is particularly true in coastal areas
where the level of the receiving water body is directly or indirectly
affected by tidal or wave effects. In such cases, not just different
rainfall conditions (varying intensity and duration), but also different
sea-levels and their effects on the network operation should be considered.
This paper aims to study the behaviour of a seaside town storm sewer
network, estimating the threshold condition for flooding and proposing a
simplified method to assess the urban flooding severity as a function of
climate variables. The case study is a portion of the drainage system of
Rimini (Italy), implemented and numerically modelled by means of InfoWorks
CS code. The hydraulic simulation of the sewerage system identified the
percentage of nodes of the drainage system where flooding is expected to
occur. Combining these percentages with both climate variables' values has
lead to the definition of charts representing the combined degree of risk
"rainfall-sea level" for the drainage system under investigation. A final
comparison between such charts and the results obtained from a one-year
rainfall-sea level time series has demonstrated the reliability of the
analysis. |
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