Articles | Volume 16, issue 7
Nat. Hazards Earth Syst. Sci., 16, 1541–1551, 2016
https://doi.org/10.5194/nhess-16-1541-2016
Nat. Hazards Earth Syst. Sci., 16, 1541–1551, 2016
https://doi.org/10.5194/nhess-16-1541-2016

Research article 04 Jul 2016

Research article | 04 Jul 2016

Overtopping breaching of river levees constructed with cohesive sediments

Hongyan Wei et al.

Download

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Download
Short summary
Mechanisms, such as flow shear erosion, impinging jet erosion, side slope erosion and cantilever collapse, were discovered in the overtopping breaching process of cohesive levees. The levee breaching flow rates were simulated by a depth-averaged 2-D flow model. The calculated overflow rates can be well expressed by the broad-crested weir flow formula. The deduced discharge coefficient was smaller than that of common broad-crested rectangular weirs.
Altmetrics
Final-revised paper
Preprint