Dredging Consultancy

Title: Risk analysis gantry

A new type of gantry for the hoisting of the suction tube has been developed by IHC. A thorough analysis has been carried out for identifying the potential hazards. An inventory has been made for the frequency and impact of these potential hazards.

Title: Analysis dredging process

Client: STAGRO – Belgium
The objective of this study was the assessment of different dredging scenarios for a sand pit in Belgium. During the study several boreholes have been drilled and samples have been analyzed. The recoverable amount of sand has been determined, the method of extraction has been investigated and an estimate is made for the operational costs

Title: In-house consultancy for project Grensmaas

Client: De Maaswerken (Dutch Waterboard and Province of Limburg)
Continuation of earlier carried out work for client as an in-house consultant on winning and processing related subjects.

Title : Plan for a special deep dredging operation for the "Zandmaas".

Client: Witteveen & Bos / Dutch State Waterways Board, Directorate Limburg, the Netherlands.
The objective of the study was to determine the feasibility of dredging usable sand and gravel from below a partly contaminated clay layer and to identify bottlenecks for this type of operation.

Title: Financial and Technical evaluation of two sand/gravel treatment plants with related transport for the project "Grensmaas"

Client: Dutch Waterways Board, Directorate Limburg
The project was carried out in co-operation with GEM consult and IHC Promin. Objective was to evaluate the cost of the installations in relation to the quality of the end product by studying various alternatives. The study involved the set up of flowsheets and mass balances, an idea of feeding arrangements by conveyor belts, a sketch design of the envisaged installation with a description and a complete cost price valuation.

Title: Elaboration of the plan for dredging operations in the "Zandmaas"

Client: Dutch State Waterways Board, Limburg Directorate
This study followed an earlier study on dredging techniques for a certain part of the river Meuse: The "Zandmaas". In this study dredging and land operations based on an environmentally preferred concept for the Zandmaas were further elaborated. The study was carried out in co-operation with Witteveen & Bos consultants.

Title: Deepening of Port of Spain Harbour

Client: Port Authority of Trinidad & Tobago
Port Authority of Trinidad & Tobago awarded to MTI HOLLAND BV the contract for consultancy services for the deepening of Port-of-Spain Harbour from its present 10 m to 12 metres. The advice includes an investigation of soil data, an investigation for the application of cutting knives in the draghead of a trailing suction hopper and the effects on the production, conceptual design of a plough and an advice for discharging clay from the hopper.

Title: Integral analysis of the process parameters in tunnelboring with large diameter in soft soil

Client: Centre for Underground Constructions, the Netherlands.
For the monitoring of the TBM operation for the Heinenoordtunnel, an overview has been provided of the main parameters of the tunnelling process. These parameters are the torque on the cutterhead, the thrust force on the machine and the volume control of the excavation. This study resulted in further analysis and predictions of components of the tunnelling process, which had not been identified before.

Title: Innovative dredging techniques for the "Zandmaas" project

Client: Dutch State Waterways Board, department Limburg, the Netherlands.
Due to the flooding of the river Meuse in 1993 and 1994, it has been decided to increase the flow capacity of the river by means of dredging. The project will be largely financed by the proceeds of the dredged aggregates. The study is aimed to identify and evaluate existing and possibly new dredging techniques, within the complex scope of standards and specifications. Special attention will be given to the relation between dredging and processing of the dredged aggregates.

Title: Hydraulic transport of sand and dewatering

Client: Witteveen & Bos, engineering consultants, the Netherlands.
As part of an extensive feasibility study into transport options of sand from the dredging location to its destination at the road construction site, MTI has given a report on the hydraulic transport of sand. Following a technical explanation of the systems involved for hydraulic transport, cost calculations were also provided. In a second stage of the study the dewatering installation has been investigated in more detail.

Title: Feasibility study on the recovery of heavy minerals during beach nourishment operations along the north coast of Holland in order to decrease beach maintenance cost

Client: Dutch Government, Department of Public Works and Waterways, Geological Survey of the Netherlands.
Along the northern coast in Holland a considerable amount of heavy minerals was found in the sand used for beach nourishment. The beaches need constant supply of sand and a feasibility study was performed to find out whether the mining of these minerals was economically interesting. Both dredging operation and recovery of the minerals was included in the study.