What is the effect of dike cover damages on the failure probability of wave overtopping?

Vera M. van Bergeijk*, Jord J. Warmink, Suzanne J.M.H. Hulscher

*Corresponding author for this work

Research output: Contribution to conferenceAbstractAcademic

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Abstract

Climate change increases the vulnerability of grass-covered river dikes due to increasing river discharges in the winter and weaking of the dike cover during droughts in the summer. Wave overtopping is one of the main failure mechanisms of grass-covered dikes. Large waves during a storm overtop the dike, flow over the crest and flow down along the landward slopes. The high flow
velocities in combination with turbulence result in erosion of the grass cover (Figure 1).
According to the WBI, the dike fails when an erosion depth of 20 cm is reached. Damages in the dike cover as the result of animal borrowings are weak spots that are vulnerable for wave overtopping erosion. In this study, we calculate the
effect of these damages on the failure probability of wave overtopping to determine the vulnerability of these damages.
Original languageEnglish
Pages42-43
Number of pages2
Publication statusPublished - 2021
EventNCR Days 2021: Rivers in an uncertain future - Online, Enschede, Netherlands
Duration: 11 Feb 202112 Feb 2021
https://ncr-web.org/events/ncr-days-2021/

Conference

ConferenceNCR Days 2021
Abbreviated titleNCR 2021
CountryNetherlands
CityEnschede
Period11/02/2112/02/21
Internet address

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