TITLE:
Experiment and Simulation of Earthen Embankment Breach
AUTHORS:
Sanit Wongsa
KEYWORDS:
Embankment Breach, Characteristics of Failure, Overtopping, Beneath Structure, Piping Hole
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.3 No.10,
December
18,
2015
ABSTRACT:
Many studies of earthen
embankment failure from overtopping flow have been conducted in various
aspects. Most of them focused on the mechanism of breach, depth and width of
erosion, and breach hydrograph. The results were obtained either from both
physical and numerical modeling and/or coupling techniques. However, a physical
hydraulic model of the effect of breach mechanism under three types;
overtopping, beneath structure and piping hole have not been studied. Fixed
embankment slopes with scale of 1:8.5 were employed to perform the experiment.
It was found that the piping hole case at the toe of embankment was the most
severe damage. The iRIC Nays2D numerical model shows a good performance of
simulated results in both water flow and breach morphological characteristics,
indicating that the model simulation is reasonable.