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| Titel |
Failure of infrastructure embankments induced by flooding and seepage: a neglected source of hazard |
| VerfasserIn |
M. Polemio, P. Lollino |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 12 ; Nr. 11, no. 12 (2011-12-22), S.3383-3396 |
| Datensatznummer |
250009841
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| Publikation (Nr.) |
 copernicus.org/nhess-11-3383-2011.pdf |
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| Zusammenfassung |
| The risk of failure of transportation embankments due to seepage induced by
temporary and occasional impoundments taking place on the upstream side as a
consequence of exceptional rainfalls is frequently underestimated. These
failure events result from a combination of three main factors, i.e. the
flooding event, the hydraulic weakness and the geotechnical weakness of the
embankment. Based on the case study of a railway embankment in Southern
Italy that collapsed in 2005 due to an upstream impoundment that occurred
after few hours of a very intense rainfall, the paper describes a
methodological approach aimed at assessing hazard of failure of
transportation embankments induced by flooding and seepage. In particular,
according to hydrological, hydraulic and geotechnical studies performed to
define the factors affecting the process of the embankment failure, three
subsequent activities are proposed: the historical analysis of flood damages
at the watershed scale; and the assessment of the upstream peak impoundment
based on hydrological analysis and the embankment stability analysis, these
latter to be carried out at the site specific scale. The approach here
proposed is planned to be further validated and improved by means of the
application to other case studies, characterised by different contexts and
embankment structures. |
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