Mining activities in a coastal zone: Effects and remedial measures in the Netherlands

In July, 1959, the presence of gas in the subsoil of the Province of Groningen in the extreme NE part of the Netherlands was confirmed. Subsequently, it became clear that the mining of the gas would result in considerable subsidence and a disruption of the drainage system of an area adjacent to the North Sea, and situated already partly below...

Influence of the density of placement on the stability of armour layers on breakwaters

Studies on the stability of the amour layer (d’Angremond et. al. [1999] revealed the importance of density of placement. The current research focuses on the influence of the density of placement on the stability of cubes in a double armour layer and tetrapods and rocks in a single armour layer. The experiments were performed in the Laboratory of...

Positioning of cubes on a breakwater slope

Recent research has shown that it is possible to use concrete cubes as a single armour layer on breakwaters. However, this is only possible in case a placing density of at least 70 % is achieved. In lab-tests it is no problem to place cubes with this density, however it is questionable if such a placing density can be achieved in prototype...

Introduction to coastal engineering

Lecture notes on genesis of the coastline, climatology, oceanography, coastal morphology, coastal formations, coastalzonde management, tidal inlets and estuaries, pollution and density problems, practical problems and common solutions.

Inter institutional workshop on breakwaters

(1) Functional requirements for Breakwaters - Prof. K.d' Angremond (2) Development of fishery harbors in India - Mr. K. Omprakash (3) Non-rubble Breakwaters and optimisation - Prof. K.d' Angremond (4) Wave energy caisson Breakwaters - Dr. S. Neelamani (5) Partially suspended porous wall Breakwaters - Dr. J.S. Mani (6) Case studies on stability...

Coastal Engineering. Volume I

Natural system, coastal dynamics, climatology, oceanography, morphology. Coastal formations, Coast and culture, The Netherlands.

Berm breakwater structures: Final report: Research summary

A research project on berm breakwater structures was carried out with the overall objective of arriving at a better design basis. Eight European organisations from Denmark, The Netherlands, United Kingdom, Norway, Italy and Iceland participated in the joint research project co-sponsored by the European Commission under the second research and...

Stresses in tetrapod armour units introduced by wave action

in this study an analysis concerning the pulsating and impact portion of the tensile stresses inside tetrapod armour units is presented. The data has been obtained from a series of small scale model tests performed at Delft Hydraulics. Stresses have been measured using a load cell technique developed and made available by Coastal Engineering...

Design formula for tetrapod breakage

The paper presents a design formula for Tetrapod armour on a 1:1.5 slope exposed to head-on random wave attack The formula predicts the relative number of broken Tetrapods as function of: the mass of the Tetrapods, the concrete tensile strength and the wave height in front of the structure. Thus, the formula addresses the observed problem of...

Comparison construction costs conventional rubblemound breakwaters/bermbreakwater

Given a harbour location and a wave-climate, two different types of rubble-mound breakwaters were designed. Using realistic quarry yield curves and prices for production, transport and constmction, the total costs of the conventional statically stable and dynamically stable bermbreakwater designs were compared to each other. This comparison led...

Berm breakwater structures: Dynamically stable structures and their natural response to wave attack

Wave interaction with dynamically stable structures is studied by means of a verified numerical model. The model can simulate wave motion on and in permeable structures. For dynamically stable structures, including gravel beaches, berm breakwaters and reef-type structures, a procedure is developed to simulate the natural response to wave attack....

Breakwater design

Lecture notes on the design of rubble mound and caisson breakwaters.