Sellmeijer in the northern Maasvallei: Assessing the applicability of the Sellmeijer design rule for hydrogeological systems in Limburg

The applicability of the Sellmeijer design rule to Limburg dike sections near Well, Hout-Blerick, Buggenum, and Thorn was investigated in this thesis. This was accomplished by building a finite element numerical model, in COMSOL Multiphysics, to assess the piping in the hydrogeological systems of the research locations. The proposed model is...

The effect of leakage on backward erosion piping: A modelling study in 2D and 3D

In the Netherlands, dikes are the most commonly used structures to retain water and provide safety against flooding. In order to ensure the safety of these dikes against a number of different failure mechanisms such as backwards erosion piping, wave overtopping and macro stability, a detailed safety assessment has been created. The focus of this...

Piping in sandy tidal deposits: Design of field experiments on piping through sandy tidal deposits in the Hertogin Hedwigepolder

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...

The effects of anisotropy and heterogeneity in the piping sensitive layer

Levees are earthen structures that are designed to protect land from flooding and are commonly composed of impervious soils and built on sandy foundations. They are sensitive to an erosion process that is known as piping. After several years of investigation into piping, Sellmeijer proposed design rules by curve fitting results of a numerical...

Evaluation of Dutch backward erosion piping models and a future perspective: (Paper and Abstract)

The prediction of backward erosion piping is important for safety assessment of dikes in the Netherlands, where subsurface conditions are prone to this erosion mechanism. In the current assessment methodology, the adapted Sellmeijer rule is in use. In combination with the national safety philosophy and uncertainty in input parameters, this model...

Backward erosion piping: Initiation and progression

Backward erosion piping is an internal erosion mechanism during which shallow pipes are formed in the direction opposite to the flow underneath water-retaining structures as a result of the gradual removal of sandy material by the action of water. It is an important failure mechanism in both dikes and dams where sandy layers are covered by a...

Correlation Effect in Probabilistic Design against Piping in Multi-Functional Flood Defences

The multi-functional flood defences are one of the many solutions proposed for climate adaptation in deltaic areas. Similar concepts flood management structures such as Delta-dikes, un-breachable dikes or super-levees can also be found in literature. Yet all of them have two key design requirements in common. The first one is to improve their...

SBW Hervalidatie piping E. Evaluatie 0,3d rekenregel

De herkomst en onderbouwing van de zogenaamde '0,3d-regel' uit het Technisch Rapport Zandmeevoerende Wellen [TAW, 1999] is nader onderzocht in het kader van het SBW project 'Hervalidatie piping'. Deze regel biedt bij toepassing van de methoden van Bligh en Sellmeijer een reductie van het verval over de waterkering bij het toetsen op het kritieke...

SBW Piping - Hervalidatie piping: B3. Analyse kleinschalige laboratorium proeven

Doel van het SBW piping project is het identificeren van onzekerheden binnen de huidige piping toetsingsregels en deze eventueel te verkleinen of elimineren. Een veertigtal kleinschalige laboratoriumproeven op 9 verschillende zanden zijn uitgevoerd om inzicht te krijgen in de processen van kanaalvorming die uiteindelijk tot bezwijken van een...