Safety Assessment Method of Flood Defences for Flow Sliding

Conference paper (2015)
Department
Hydraulic Engineering (CEG) (TU Delft)
Copyright: of the Creative Commons Attribution Non-Commercial License.
More Info
expand_more

Published Date

16-10-2015

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Source:

Geotechnical Risk and Safety V; 5th International Symposium on Geotechnical Safety and Risk; Rotterdam (The Netherlands), 13-16 Oct. 2015

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Abstract

Flow sliding of submerged slopes in front of dikes can affect the reliability of flood defences. The occurrence of flow sliding may result, sometimes with delay, in a failure mode and consequent flooding. The current safety assessment method for flow sliding does not consider the interaction between flow sliding and failure modes which can cause a breach. Therefore it is unclear whether the safety assessment method is sufficiently safe or too conservative. This paper presents a method to derive a simple safety assessment and design rule based on a number of advanced probabilistic analyses made for four Dutch cases, in which both flow sliding and the relevant direct failure modes have been incorporated. Two methods for the safety assessment of flow sliding are presented: as separate failure mode and coupled to direct failure modes.