Aanleiding van het project
Maintenance dredging is necessary to enable navigation in ports and waterways. ,Sediments deposited by tide, river flows and currents need to be regularly removed. The volumes of dredged material have substantially increased over the last years. As maintenance dredging and relocation of these deposits can be highly expensive and time-consuming, port authorities and governmental organizations seek sustainable solutions to reduce maintenance costs, reduce environmental impacts and at the same time guarantee safe navigation in ports and waterways.
In a previous TKI Deltatechnology project (DEL048), the return flow of dredged sediment from the sea to the port mouth was examined. This project is followed by another TKI Deltatechnology projects ‘Modellering lokale slibdynamiek en aanslibbing Maasmond (MoMa)’ (DEL089), that concerns the local sediment transport and sedimentation in the port itself. The Deltatechnology TKI project ‘Innovatief Sediment Management voor Havens (PRISMA)’ (DEL 101) integrates the developed knowledge and bring new aspects, such as system knowledge, more in-depth modelling of fluid mud dynamics, innovative in-situ monitoring methods, water injection dredging and sediment trapping. The proposed TKI project is focused on applying developed knowledge and tools during expanded pilots at the port in order to apply the newly-developed maintenance concept for regular maintenance.
Doel van het project
The goal of the project is to deliver the multidisciplinary knowledge, which is necessary to successfully employ, quantitatively assess and generically improve the current maintenance strategies at the PoR. In particular, the results of the project can be further used for testing various water injection dredging scenarios and optimizing regular hopper dredging at the PoR.
The project is aiming to deliver the following:
– New dataset for calibration of sediment dynamics models
– A quick assessment data-driven tool for optimizing dredging strategies
– New system knowledge at the PoR
– Fluid mud dynamics model for WID
– Most-efficient operational parameters for WID (obtained in the lab)
– A dataset for calibrating non-Newtonian flow models for navigation through fluid mud application
The developed knowledge and tools will be applied for optimizing the dredging maintenance, that will ultimately result in reduction of maintenance costs and greenhouse gas emissions from dredging activities.
Omschrijving van de activiteiten
2020: kick-off, starting piloting Water Injection Dredging for regular maintenance, 2 system knowledge measuring campaigns (data collection), model advancement, developing a data-driven tool.
In-situ measuring campaigns, data collection and interpretation will be conducted together with the PoR. In-kind contribution of the PoR will be used for this research.
2021: conducting flume experiments, calibration and validation of the models using the flume and field data, application for various cases at different port areas, final reports and scientific publications.
Conducting flume experiments will be done together with TU Delft. In-kind contribution of TU Delft will be used for this research.
1 – Report on model design and sensitivity study (memo) – 2020
2 – Report on WID testing at PoR – 2020
3 – Dataset for system knowledge and model validation – 2021
4 – Dataset for calibrating non-Newtonian flow models (for navigation through fluid mud) – 2021
5 – Report on model development and application (final report) – 2021
6 – Publicly available and open-source new sediment transport model at PoR – 2021
7 – Scientific publications – 2021
The innovative aspects relate, among other things, to understanding better the transition of fluid mud layers to the consolidated phase. This will be done by conducting flume experiments. Anther novel aspect is putting into perspective the resulting sediment flows due to water injection dredging. This will be achieved through a combination of model/data analysis with non-Newtonian flow. In addition, the understanding gained on the interactions at the complex water-sediment bed interface during WID will be explored through detailed in-situ measurements of fluid mud layers developments and sedimentation.
This knowledge will be used to further develop and fine-tune the processes and model application being used to optimize management of WID through simulations of different temporal and spatial conditions. Near-field models will be coupled with far-field models to capture the processes at sediment-water interface both directly in the vicinity of the WID and the impact on the wider port area respectively.
Dit kan verschillend zijn voor fundamenteel, experimenteel en industrieel onderzoek
N.b. Het strekt tot aanbeveling deze sectie per te valoriseren product door de verantwoordelijke partner in te laten vullen.
1 – Deltares, PoR, technical universities – Development and validation of the models, system knowledge
2 – Deltares, PoR, other parties – Transfer during cooperation project, inclusion of the validated model to the port maintenance and sediment management
3 – Deltares, PoR, dredging companies, VdK – Optimization of sediment management strategies, developing new maintenance concepts
4 – Scientific community, technical universities and institutions – Publication in scientific journals
5 – PoR, Deltares, RWS, VdK – New data-driven tools for sediment management
6 – PoR, RWS,port authorities – Validation of sailing through fluid mud models