Piping in sandy tidal deposits
Design of field experiments on piping through sandy tidal deposits in the Hertogin Hedwigepolder
Ard-Jan Methorst (TU Delft - Civil Engineering & Geosciences)
Matthijs Kok – Mentor (TU Delft - Civil Engineering & Geosciences)
M. Hijma – Graduation committee member (Deltares)
Joost Pol – Graduation committee member (TU Delft - Civil Engineering & Geosciences)
Bram van Prooijen – Graduation committee member (TU Delft - Civil Engineering & Geosciences)
More Info
expand_more
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.
Abstract
In the Netherlands dikes are assessed on piping using the model developed by Sellmeijer. This model is calibrated on experiments with permeable, homogeneous, fluvial sand with no fines and covered by an impermeable cohesive layer. In tidal areas, however, the sand deposits are strongly heterogenous, contain fines and are influenced by biochemical effects. It is therefore expected that the Sellmeijer model overpredicts the piping vulnerability of tidal sands. This thesis is aimed to improve the piping assessment of levees situated on tidal sediments. A large-scale experiment on piping in the Hedwigepolder on tidal sediments is planned by Deltares, Fugro and Waterschap Hollandse Delta for 2021. A design of this experiment is made, substantiated by findings from literature and the modelling and analysis of small-scale experiments on tidal sands.