Article (Scientific journals)
Overtopping-induced failure of non–cohesive homogeneous fluvial dikes: effect of dike geometry on breach discharge and widening
Schmitz, Vincent; Erpicum, Sébastien; El Kadi Abderrezzak, Kamal et al.
2021In Water Resources Research, 57
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Keywords :
Overtopping; Levees and dikes; Breach; Laboratory experiments; Dike geometry
Abstract :
[en] Laboratory experiments were conducted to assess the influence of dike geometry on the breaching of non-cohesive homogeneous fluvial dikes. Both the channel-side and floodplain-side dike slopes and the crest length were varied systematically. The time-evolution of the breach discharge and breach width was monitored. Dikes having a larger volume per unit width lead to a more gradual increase in breach discharge and in breach width during the first stage of breach expansion (i.e., phase of rapid erosion). In contrast, the later stage of gradual breach widening is less influenced by the dike geometry. The breach hydrographs were observed to follow three distinct patterns, which are explained based on the relative magnitude of two characteristic time scales and of a normalized form of the dike unit volume.
Disciplines :
Civil engineering
Author, co-author :
Schmitz, Vincent  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Erpicum, Sébastien  ;  Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
El Kadi Abderrezzak, Kamal
Rifai, Ismail
Archambeau, Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Pirotton, Michel ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin  ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Overtopping-induced failure of non–cohesive homogeneous fluvial dikes: effect of dike geometry on breach discharge and widening
Publication date :
2021
Journal title :
Water Resources Research
ISSN :
0043-1397
eISSN :
1944-7973
Publisher :
Wiley, Hoboken, United States - New Jersey
Volume :
57
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 June 2021

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