Dikes and levees are encountered very often along rivers. They are crucial as defence structures for flow channelization, protecting population and properties from floods as well as against lateral riverbed migration. However, the combination of their aging and increased exposition to extreme hydrological events may cause these structures to breach, and subsequently to fail. Understanding the dynamics of breaching is very important for developing adequate countermeasures, for civil protection initiatives and for land use planning. Recent literature shows many studies concerning, both from experimental and numerical point of views, frontal dike breaching. Based on several evidences, it is well assessed that depth-integrated numerical models can successfully reproduce this kind of phenomenon (e.g. Greco et al., 2012). Recently, Rifai et al. (2017) investigated a different setup in which the embankment is parallel to the main channel flow and thus a lateral breaching occurs. It is worth noting this scheme resembles real-world situation of levees breaching along a river. In present paper, the capability of depth-integrated approaches in reproducing such tests is investigated. Numerical results obtained with different models are compared against experiments from both the qualitative and quantitative point of views. Considerations about the applicability of depth-integrated models in real world situation of lateral breaching of dikes and levees are also drawn.

Numerical simulation of lateral dike breaching due to overtopping / Dewals, B.; Rifai, I.; El-Kadi Abderrazek, K.; Greco, M.; Di Cristo, C.; Iervolino, M.; Leopardi, A.; Vacca, A.. - 40:(2018). (Intervento presentato al convegno 9th International Conference on fluvial Hydraulics, River Flow 2018 tenutosi a Lyon nel 8 september 2018) [10.1051/e3sconf/20184003025].

Numerical simulation of lateral dike breaching due to overtopping

Greco M.;Di Cristo c.;Vacca A.
2018

Abstract

Dikes and levees are encountered very often along rivers. They are crucial as defence structures for flow channelization, protecting population and properties from floods as well as against lateral riverbed migration. However, the combination of their aging and increased exposition to extreme hydrological events may cause these structures to breach, and subsequently to fail. Understanding the dynamics of breaching is very important for developing adequate countermeasures, for civil protection initiatives and for land use planning. Recent literature shows many studies concerning, both from experimental and numerical point of views, frontal dike breaching. Based on several evidences, it is well assessed that depth-integrated numerical models can successfully reproduce this kind of phenomenon (e.g. Greco et al., 2012). Recently, Rifai et al. (2017) investigated a different setup in which the embankment is parallel to the main channel flow and thus a lateral breaching occurs. It is worth noting this scheme resembles real-world situation of levees breaching along a river. In present paper, the capability of depth-integrated approaches in reproducing such tests is investigated. Numerical results obtained with different models are compared against experiments from both the qualitative and quantitative point of views. Considerations about the applicability of depth-integrated models in real world situation of lateral breaching of dikes and levees are also drawn.
2018
Numerical simulation of lateral dike breaching due to overtopping / Dewals, B.; Rifai, I.; El-Kadi Abderrazek, K.; Greco, M.; Di Cristo, C.; Iervolino, M.; Leopardi, A.; Vacca, A.. - 40:(2018). (Intervento presentato al convegno 9th International Conference on fluvial Hydraulics, River Flow 2018 tenutosi a Lyon nel 8 september 2018) [10.1051/e3sconf/20184003025].
File in questo prodotto:
File Dimensione Formato  
riverflow2018_03025.pdf

non disponibili

Dimensione 729.78 kB
Formato Adobe PDF
729.78 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/740990
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact