Notional Permeability

Notional Permeability

Kik, R.
Van den Bos, J.P.
Maertens, J.
Verhagen, H.J.
Van der Meer, J.W.

Civil Engineering and Geosciences

Hydraulic Engineering

2012-07-01

Different layer design of a rock slope and under layers has a large effect on the strengths on the rock slope itself. In the stability formula developed of VAN DER MEER [1988] this effect is represented by the term Notional Permeability with symbol P. A more open, or permeable, structure underneath the armour layer has the ability to dissipate more wave energy and therefore requires less weight of the armour layer. The influence of this parameter is thus very important in economic sense. Up until now only three configurations have been tested. In practice often intermediate structures were designed which do not correspond to the standard situations. P-values then have to be estimated in comparison with the known structures, which gives some uncertainty around the P-value. Therefore there is the demand for more validated values of the notional permeability representing other structures. During this study physical scale modelling is used to produce a value of P for a new structure.

rubble-mound breakwater
notional permeability
van der Meer

http://resolver.tudelft.nl/uuid:9db07aae-8a56-4957-9ceb-d8b58aeddea5

Coastal Engineering Research Council

2156-1028

ICCE 2012: Proceedings of the 33rd International Conference on Coastal Engineering, Santander, Spain, 1-6 July 2012

Institutional Repository

conference paper

(c) 2012 The Author(s)
Creative Commons BY