Monitoring of settling and consolidation of mud after water injection dredging in the Calandkanaal

As regular maintenance and relocation of sediment deposits are highly expensive, Port authorities seek more efficient solutions for reducing the costs and CO2 emissions of maintenance dredging. One solution, water injection dredging (WID), is carried out for maintaining the sediment deposits which predominantly consist of clay and silt. WID has been proven to be a cheaper solution by leaving the sediment in place, eliminating substantial costs for relocation of the dredged sediment.

Dredging for Sustainable Infrastructure
Dredging for Sustainable Infrastructure

The book Dredging for Sustainable Infrastructure gives state-of-the-art guidance on how to design, implement and manage a water infrastructure project with a dredging component to project owners, regulators, consultants, designers and contractors.

Types of Dredging Projects
Types of Dredging Projects

Dredging projects are often classified into three categories: capital, that is, for new infrastructure, maintenance, or remedial (environmental) projects.

Long-Term Effects of Maintenance Dredging on Turbidity
Long-Term Effects of Maintenance Dredging on Turbidity

Maintenance dredging is required in many estuaries worldwide to provide access to ports and inland waterways. A newly developed dredging module is able to capture the two fundamental processes necessary to model the long-term impacts of dredging on turbidity.

The Use of Engineered Sediments for Dyke Construction in the Flood Control Area of Vlassenbroek
The Use of Engineered Sediments for Dyke Construction in the Flood Control Area of Vlassenbroek

By preparing material from maintenance dredging with selected additives, a protective dyke was constructed from 100% reused sediments.

The Port of Lisbon, Portugal: Maintenance Dredging in a Sensitive Environmental System
The Port of Lisbon, Portugal: Maintenance Dredging in a Sensitive Environmental System

With dredging responsibility for 11 municipalities along the environmentally sensitive Tagus estuary, the Port Authority of Lisbon needed an integrated strategic dredging plan. After detailed studies, they got it.

Uncertainty Analysis of the Mud Infill Prediction of the Oklng Approach Channel
Uncertainty Analysis of the Mud Infill Prediction of the Oklng Approach Channel

To take well-founded financial decisions, help manage risks and reduce uncertainty, a model for calculating the probabilistic assessment of maintenance dredging volumes was developed using the Olokola LNG project near Lagos, Nigeria, as an example.