A Computationally Efficient Model for Predicting Overflow Mixture Density in a Hopper Dredger

Creating accurate models for the prediction of overflow losses by trailing suction hopper dredgers is an invaluable tool in determining the feasibility of land reclamation.

Dredging Stiff to Very Stiff Clay in the Wielingen Using the DRACULA® System on a Hopper Dredger

Dredging stiff clay is notoriously difficult. A newly patented system using high pressure waterjets in the hopper dredger's draghead has solved several operational problems. For his description of this innovative technique, the author was presented with a 2002 IADC Award at the PIANC Conference in Sydney, Australia.

Pre-Trenching, Pre-Sweeping and Backfilling for the 36″ Offshore Pipeline Project in Taiwan

A trailing suction hopper dredger equipped with a deep-dredging installation proved to be extremely versatile and saved the pipelaying project from large delays.

Modelling the Sedimentation Process in a Trailing Suction Hopper Dredger

For production, sand quality and environmental reasons predicting the amount of the so-called overflow losses when using a trailing suction hopper dredger is very important.

Chemical Monitoring of Maintenance Dredging Operations at Zeebrugge

As part of an intensive reasearch project to evaluate the ecological impact of dredging and relocation of material, two differnet techniques were compared.

Irruption of the Trailer Jumbo in the Dredging Industry

The newly built "jumbo" trailing suction hopper dredgers - ranging from 17,000 to 34,000 m3 capacity - have expanded the capabilities of the dredging industry enormously.

Adding Dynamics to the Camp Model for the Calculation of Overflow Losses

An IADC "Most Promising Student" Award has been presented to a graduate of TU Delft for his thesis which describes the dynamics of hopper loading both in simulation and as compared with actual measurements onboard a TSHD.

Hopper Load Measurement; Some Recent Experiences with a Remote-Operated Data Acquisition and Analysis

Calculating hopper loads discharged by pipeline has been used succesfully in land reclamation and beach nourishment projects. Discharged solids mass may be used as the basis for payment.