Innovatief Sediment Management voor Havens

Samenvatting project

The navigation in ports and waterways must be safeguarded by maintenance dredging, i.e. removing of deposited sediments. As maintenance dredging and relocation of these deposits can be highly expensive, port authorities seek for tailor-made solutions to reduce the costs and at the same time guarantee safe navigation. We will consider several options for reducing dredging costs:
SHORT-TERM: dredge more efficiently & reduce sediment return flow
LONG-TERM: modify intervention protocol

Water injection dredging (WID) is an example of a technique to reduce dredging costs on the short term. However, to avoid additional siltation in the vicinity and/or strong return flows, WID should be applied in combination with a favorable bed slope, ebb currents or/and a sediment trap, from which sediment can be dredged more efficiently. The project will be linked to SURICATES, which is aiming to optimize locations and conditions at which sediment is released.
Revising the criterium for nautical bottom is an example of modification of intervention protocols. Instead of removing sediment, its presence is accepted as vessels may navigate through fluid mud layers. Local sediment conditioning of mud by WID may be required for sailing through it. Also, good insight into the thickness, extent and rheological properties of the fluid mud layers is required.

Products are:
- Technical reports and scientific publications
- Open-source dataset and models at PoR
- Description of the project results for general audience via the website

Doel van het project

The goal of the project is to deliver the multidisciplinary knowledge which are 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 optimizing and testing novel water injection dredging scenarios at the PoR.The project is aiming to deliver the following:- Generated system knowledge: spatial and temporal variability of sediment at PoR- Improved current (flow) model- Validated sediment model on fluid mud dynamics- WID actions model- Proven working background of measuring devices: the Graviprobe the RheotuneThe developed models can be applied for optimizing the dredging maintenance inventory of effects of changes in infrastructure and management of dredging maintenance estimation of transport paths and final use of dredged sediment occurrence and thickness of fluid mud layers in the waterways and for research on mud transport. These applications are in line with related projects such as CoVadem (DEL081) and SURICATES.

Motivatie

The navigation in ports and waterways has to be safeguarded by maintenance dredging removing sediments deposited by tide river flows and currents. The volumes of dredged material have substantially increased over the last 5 years. As maintenance dredging and relocation of these deposits can be highly expensive port authorities seek for tailor-made solutions to reduce the costs and at the same time guarantee safe navigation in ports and waterways.In a previous TKI Deltatechnology projects (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 current TKI proposal 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.

Locatie

Delft

Uitgevoerde acties

The planning for experimental and industrial parts of the project is the following:
For Experimental research:
2019: Validate the working principle of in-situ devices (the Graviprobe and the Rheotune) compare to other available methods tools in laboratory check the sensitivity and repeatability of the tools improve the applicability of the tools by linking their output to acoustic measurements.
For Industrial research:
2019: Build the system knowledge by conducting 4 monitoring campaigns (data collection) develop/advance the modelling of sediment dynamics analyse the samples study the sensitivity. Monitoring campaigns data collection and interpretation will be conducted together with the PoR. The PoR contributes in-kind for this part of the research.
2020: calibrate and validate the models study the sensitivity apply various WID cases at different port areas write final reports and scientific publications. The calibration and validation of the models will be done with the PoR’s experts. The PoR contributes in-kind for this research.

Verwachtte resultaten

1. Report on model design and sensitivity study (memo) (2019)
2. Report on monitoring tools (Graviprobe Rheotune) (2019)
3. Dataset for system knowledge and model validation (2019)
4. Report on model development and application (final report) (2020)
5. Publicly available and open-source sediment transport model at PoR (2020)
6. Report on WID actions at PoR20207Scientific publications (2020)

Innovativiteit

The innovative aspects relate among other things to the transition of fluid mud layers to the consolidated phase. Anther novel aspect is putting into perspective of sediment flows due to water injection dredging compared to the natural sediment flows and the coupling with detailed in-situ measurements of fluid mud layers developments and sedimentation.

Valorisatie

Niet ingevuld

Hoe gaan de participanten van het project om met intellectueel eigendom dat voorkomt uit deze projecten?

Alle partijen krijgen alle resultaten van het Project ter beschikking. De resultaten van de samenwerking kunnen breed verspreid worden. Partijen kunnen over deze resultaten vrijelijk publiceren. De resultaten zullen volledig openbaar beschikbaar zijn, met uitzondering van ter beschikking gestelde achtergrondkennis.

Op welke wijze wordt de informatie over dit project op eenvoudige wijze voor het algemene publiek kenbaar gemaakt (beschrijving van het onderzoek, deelnemers en de planning en voortgang)?

De informatie over dit project wordt kenbaar gemaakt via de website van de TKI Deltatechnologie (projectbeschrijving) en de projectwiki van Deltares (projectvoortgang en resultaten).

Projectvoorwaarden

Na de datum waarop deze Overeenkomst in werking is getreden, maar uiterlijk tot een jaar voor de beoogde datum waarop het Project zal zijn voltooid, kunnen ondernemers en/of onderzoeksinstellingen, die op het terrein van het relevante subsidieprogramma van het TKI werkzaam zijn alsnog als Partij toetreden. Een later toetredende Partij zal een nader overeen te komen bijdrage in kind en/of in cash moeten leveren die in redelijke verhouding staat tot zijn relatief aandeel in het Project na toetreding. De overige Partijen ontvangen vervolgens naar rato een terugbetaling en/ of gedeeltelijke vrijstellingen van hun nog te leveren bijdrage in kind, voor zover niet besloten wordt de bijdrage van de later toetredende Partij aan het projectbudget toe te voegen.

Projecteigenaar en projectleider(s)

Projecteigenaar:
Hans Groot
Projectleider(s):
Alex Kirichek

Partners

  • Havenbedrijf Rotterdam
  • Stichting Deltares (Delft)
  • TKI Deltatechnologie

Resultaten

Innovatief Sediment Management voor Havens-2020-4

Resultaat type
Product-/Proces Deliverables
Aantal
1
Omschrijving

Available on:
https://publicwiki.deltares.nl/display/TKIP/DEL101+-+Innovatief+Sediment+Management+voor+Havens

Wetenschappelijke publicatie?

Innovatief Sediment Management voor Havens-2020-4

Resultaat type
Prototype
Aantal
3
Omschrijving

The project has delivered new tools, which are necessary for successful employing, quantitative assessing and generic improving of water injection dredging actions and sediment trapping. The tools can be further used for optimizing in-situ pilots at ports and waterways. In addition, the following methods, knowledge and experience has been gained:

- Generated system knowledge: spatial and temporal variability of mud in the Port of Rotterdam
- Improved current (flow) model (Delft3D)
- New sediment model (Delft3D)
- WID actions model (1DV model and a 3D multiphase CFD model)
- Reliability of measuring devices: the Graviprobe, the Rheotune
Available on: https://publicwiki.deltares.nl/display/TKIP/DEL101+-+Innovatief+Sediment+Management+voor+Havens

Wetenschappelijke publicatie?