CEDA Dredging Days 2019

Dredging Days

Programme

7-8 November 2019. Ahoy, Rotterdam, the Netherlands

Here is a list of the authors who have been invited, by the Technical Papers Committee, to submit full papers based on their abstracts. All submitted papers will be rigorously peer-reviewed, and the accepted papers will form the main conference programme.
 

Author(s):
de Wit L - Svasek Hydraulics, The Netherlands

Summary:
This paper will present a CFD model which is capable of fully simulating hopper sedimentation in 3D. The model allows for multiple production pipe and overflow locations to be considered at any desired location in the hopper, and optimal hopper loading and overflow losses can be simulated.

Author(s):
Boerema A, van der Biest K, Vrebos D and Meire P - University of Antwerp, Belgium; Taal M - Deltares, The Netherlands; van Holland G - IMDC, Belgium; Mestdagh S and Ysebaert T - NIOZ, The Netherlands; Roose F - Department of Mobility and Public Works, Belgium

Summary:
This paper will discuss a GIS tool which allows managers to investigate and demonstrate the additional environmental and societal benefits of smart sediment management strategies. It will also show how the tool was used for a series of innovative sediment management strategies in the transboundary Scheldt-estuary.

Author(s):
Sheehan C and Holmes L - Anthony D Bates Partnership, United Kingdom

Summary:
This research compares market day rates for dredging projects, over the past ten years, with rates calculated and developed using the CIRIA dredging cost standards publication. Deviations are highlighted and recommendations provided to improve dredging cost estimation.

Author(s):
Hack JH - Association for Waterborne Transport Infrastructure, Belgium; Apitz S - United Kingdom; Boerema A - Universiteit Antwerpen, Belgium; Boon A - Deltares, The Netherlands; Cofrancesco A - U.S. Army Engineer Research and Development Center, United States of America; De Boer G - Royal Haskoning DHV, The Netherlands; Fuchs E - Bundesanstalt für Gewässerkunde, Germany; Guannel G - The Nature Conservancy, United States of America; Hopper D - New South Wales Government, Australia; Moulaert I - Jan De Nul NV, Belgium; Krebs M - Wasserstraßen- und Schifffahrtsamt Emden, Germany; Touzinsky K - US Army Corps Headquarters, United States of America

Summary:
This paper will introduce the Ecosystem Service concept, in the context of Waterborne Transport Infrastructure, as a holistic tool which can be applied to all stages of a project cycle. Drawing on best practice examples, it will provide guidance on how the navigation sector can successfully and supportively use the concept.

Author(s):
Ave T, Heijnen S, Rasch TLA, van der Wal DI and Helmons RLJ - Delft University of Technology, The Netherlands

Summary:
In order to get a fundamental understanding of dynamic separation in moist granular materials, the physical aspects of the studied material must be taken out of the equation. This paper discusses how the first steps have been taken to research the phenomenon by investigating the applicability of quartz sand.

Author(s):
Miedema SA - Delft University of Technology, The Netherlands

Summary:
Knowing the spillage/efficiency of your cutter dredge, when dredging sand or gravel, could save considerable amounts of money on an operation, and this paper will show the best way to determine it.

Author(s):
Kapela C - Egis Ports, France; Van Slambrouck, T - Jan de Nul, Monaco

Summary:
The urbanisation project in Monaco is unique in many ways due to its various challenges (environmental, technological, logistical...). This paper will focus on the adaptations and methods used in order to fulfill all the requirements related to the dredging phase.

Author(s):
Mestemaker BTW, van den Heuvel HN and Gonçalves Castro MB - Royal IHC, The Netherlands

Summary:
Dual fuel engines operating on natural gas have a smaller transient load acceptance than diesel engines and therefore need an energy storage system, to prevent it from switching to diesel. This paper will discuss a statistical method for estimating the size of such systems.

Author(s):
Baker MJ - CARES, Nigeria

Summary:
Lagos is expected to become the world’s 3rd largest city but it has already outgrown its harbour. Ocean-going vessels berth outside the managed channel - navigating a small creek, shallow pipelines, existing developments and abandoned vessels on the way. A channel extension project will facilitate development, generate income and improve safety of navigation. This paper will discuss the drivers, challenges and solutions for the project.

Author(s):
Manso F - Antea Group, Belgium

Summary:

Author(s):
Martinelli M, Luger D and Talmon A - Deltares, The Netherlands

Summary:
This presentation will illustrate the most recent simulations of sand capping. A strain softening and rate dependent constitutive model was used to simulate the mud behaviour and sand cap plunging, as observed in the field, was reproduced by numerical analysis. The paper will discuss the study and its conclusions.

Author(s):
De Wit K - IMDC, Belgium; Ege M - Arti Proje, Turkey

Summary:
Poor soil conditions, ecologically sensitive area, dredged material with limited re-use options, and long transportation distances, make the Izmir Bay project a challenging attempt to improve water quality and create nature. This paper will illustrate how dredging a re-circulation channel is the key to it all.

Author(s):
De Keukelaere L, Moelans R, Knaeps E and Strackx G - VITO, Belgium

Summary:
Drone technology is evolving quickly for a wide range of applications, including water quality monitoring. It provides flexibility on when and where to collect the data, and it makes it easier to observe areas that are physically inaccessible. Not only that, the results provide high spatial detail. This paper will discuss their use in mapping water quality and discusses Texel as a case study.

Author(s):
Blanken A and Los JG - Royal IHC, The Netherlands

Summary:
Assessment of concept designs and design improvements of a cutter suction dredger often stumbles over the challenges of cutterhead and soil interaction. This paper will discuss how modelling soil interaction on the scale of a cutter head, rather than cutter teeth, enables complete system simulations.

Author(s):
Bundgaard K - NIRAS, Denmark; Lumborg U and Nyborg L - DHI, Denmark

Summary:
Calibration between NTU and SSC can vary by a factor of ten between fine grains and sand. This paper will demonstrate that OBS devices can be highly sensitive with regards to grain size, and it will look at the link to general light dampening and the use of SSC in turbidity limits.

Author(s):
Furlan J, Visintainer R, Pagalthivarthi K and Garman M - GIW Industries, United States of America; Tran A - Georgia Tech., United States of America

Summary:
GIW in-house CFD codes are used to perform a parametric study on erosive wear of slurry pumps. In the study, simulations were performed on 40 pump designs, encompassing the typical range of specific speeds and hydraulic design geometries, varying head, particle size, and solids concentration. This paper presents the study and its conclusions.

Author(s):
McVeigh B - McAleer & Rushe, Northern Ireland; Stern EA - Tipping Point Resources Group, United States of America

Summary:
The paper highlights how the use of existing technologies such as dewatering plant, Pneumatic Flow Tube Mixer (PFTM), concrete placement booms, 3D GPS positioning and dig systems, can be combined to produce improvements in dredged material management and reduce operational costs.

Author(s):
Burgmans SH, Brevet R and Miller G - In2Dredging, Australia

Summary:
Accurate production estimates are key in determining budgets and schedules for any dredging project. This paper will take a different perspective on helping clients appreciate the pitfalls of optimistic budgets and unrealistic schedules.

Author(s):
de Roo M and de Hoogh FCA - Damen Shipyards Gorinchem, The Netherlands

Summary:
Modern Marine Aggregate Dredgers must be ready for the 21st century, so extensive efforts have been made to upgrade the designs to higher standards. Such upgrades have an impact and make perceptible differences to the operation. This paper will set out the background and highlight insights on several design considerations.

Author(s):
Schouten TD - Delft University of Technology, The Netherlands

Summary:
To simulate the behaviour of the sand within a pipeline at multiple flow conditions a two-phase model has been developed which deals with both the water and fluid phase as a fluid. This paper will discuss how the model handles the simulation of fully suspended flow in a channel at multiple sand fractions.

Author(s):
Betman MHJ and Dykstra C - Boskalis, The Netherlands

Summary:
The Centrepoint of Indonesia reclamation project was formed on soft marine clays. Gradually loading the subsoil, in layers of 0.5m per day, avoided the mixing of the sprayed sand with original subsoil and prevented mud waves. This paper discusses how Boskalis achieved this by developing an autonomous spraying pontoon.

Author(s):
Termeulen F and Nicolai A - Rhosonics Analytical, The Netherlands

Summary:
Operators monitor several process parameters to know what is flowing through pipes during an operation. This paper will explain how dredgers can benefit from using ultrasonic density measurement to see what’s really happening in the pipe, and will discuss real-life case studies.

Author(s):
Kirichek A - Deltares, The Netherlands; Rutgers R - Port of Rotterdam, The Netherlands

Summary:
The utility of water injection dredging (WID) and fluid mud trapping was investigated in the Port of Rotterdam. After WID actions, the sediment trap was surveyed for 3 months. Based on investigations, it can be concluded that the new cost-effective port maintenance strategy is feasible in the ports. This paper will discuss the investigation and subsequent conclusions in detail.

Last update: 1 April 2019