Searched for: subject:"dredging"
(1 - 20 of 90)

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de Roode, Dylan (author)
The International Maritime Organisation (IMO) is a specialized agency responsible for the safety and security of shipping and the prevention of marine and atmospheric pollution by ships. Air pollution is one of the contributors, CO2 emission is recognised as the biggest contributor to the increasing temperature of the Earth. Global warming is a...
master thesis 2020
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Poppe, Richard (author)
The research focuses on sedimentation in reservoirs. Subjects include settling distribution in a reservoir, dredging and flushing of sediment in reservoirs, impact of sedimentation on reservoir performance and financial effects of long term sedimentation in reservoirs.
master thesis 2020
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Alfaro Monge, Luis Carlos (author)
Siltation affects navigation in harbors and waterways by reducing the water depth. To regain depth and safeguard navigation, dredging is required. Water Injection Dredging (WID) is one of the available hydrodynamic dredging techniques, in which pumps on a vessel inject water at high flow velocities and low pressure into the bed and fluidize the...
master thesis 2020
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Happee, Kate (author)
Canal Emilio Mitre is a navigation channel that runs through the Rio de la Plata estuary in South America. It grants access to the second largest inland waterway system in South America, covering (parts of) Argentina, Uruguay, Brazil, Paraguay and Bolivia. The channel is a main bottleneck for navigation for two reasons; the channel has a...
master thesis 2019
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van Halem, Pieter (author)
This thesis introduces a new algorithm for optimising shipping routes within a dredging project. Highly dynamic and time-dependent hydrodynamic features influence shipping routes. Due to the complex interactions between the horizontal tide, vertical tide, stratifying forces, wind-driven forces, and limited water-depth, shipping routes were...
master thesis 2019
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Bushell, Terry (author), Jin, Yueyuan (author), Huang, Haoxi (author)
The Port of Rotterdam has many old harbours located close to the Rotterdam city center that are no longer suitable to be used for industrial purposes. Meanwhile due to expansion and population growth of the city, more recreational spaces are needed. The idea is to use the abundant dredged material from the Port of Rotterdam to fill in and...
student report 2019
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Tims, Frido (author)
Already since the start of civilisation dredging is carried out to create and maintain waterways and ports or to create new land. In recent times the scale of dredging and awareness of potential environmental impact of dredging have increased drastically. An often used dredging vessel is the trailing suction hopper dredger (TSHD). A TSHD pumps...
master thesis 2019
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Werkhoven, Jeroen (author)
CSD spillage is defined as “any soil that is dislodged above the lowest cutter tip trajectory of a single swing, but is not sucked into the suction pipe”. In addition to higher energy consumption and material wear for delivering the targeted depth, spillage can lead to a variety of environmental issues. As of yet, no analytical model exists in...
master thesis 2019
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Bekkers, Rick (author)
In a world where the awareness of global warming and climate change increases, the shift towards sustainable energy is essential. In the upcoming years, an increasing number of offshore wind farms is expected. Over the past years, all the 'best spots' are taken and the new locations in tougher soil conditions or even rock have to be overcome....
master thesis 2018
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van Walt Meijer, Valerie (author)
Companies (in general and in the dredging sector) are striving towards more sustainable operations. However, problems arise in the changing of current practices to operationalize sustainability goals in projects. The objective of this research is to describe the process of creating a sustainable operating environment for dredging and reclamation...
master thesis 2018
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de Groot, Sjoerd (author)
This Master thesis presents an improved model for the transport of fine suspended sediment (SPM) in the Rhine region of fresh water influence (ROFI) and in the Port of Rotterdam. It is known that the transport of SPM in the Rotterdam harbor depends on marine as well as fluvial processes. SPM transport inside the harbor has been modelled in the...
master thesis 2018
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de Bruijn, Lukas (author)
The Port of Rotterdam (PoR), located in the Rhine-Meuse estuary, is subject to sedimentation. In order to keep the port accessible for vessels with high drafts, maintenance dredging works are done. The maintenance dredging over the port area is executed by two parties, PoR itself regarding the harbour basins and Rijkswaterstaat (RWS) regarding...
master thesis 2018
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Lambert, Ingrid (author), Parodi, Matteo (author), Vieira Passos, Marlon (author), Caldera, Ganga (author), Almadhoun, Yasser (author)
Relative sea level rise and climate change represent long-term threats for the ecosystems and flood defence system in the Wadden Sea. Moreover, the flood-dominant tidal basins in the area lead to sedimentation in the navigational channels used by the ferry services that connect the mainland to the Dutch Wadden islands. This report provides flood...
student report 2018
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Disberg, Coen (author)
This research focuses on the development and feasibility of an online grain size estimator for a trailing suction hopper dredger (TSHD), based on the mass balance within a hopper, and using hopper settling models. The idea of the grain size estimator is to use existing hopper settling models iteratively for a certain time window with ‘online’...
master thesis 2018
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Blekman, Luuk (author)
Since the 19th century hopper dredgers have been used for civil operations such as land reclamation and water way maintenance. In the past 25 years a trend of scale enlargement of hopper dredgers driven by economic and productivity reasons is seen. Scaling of the designs has effect on strength and fatigue assessment as well on settling of...
master thesis 2018
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den Uijl, Joris (author)
A strategy for completing a dredging project is called a working method. The goal of a tender study is to find an optimal working method for a specific project. To find the optimal working method, the full range of possible solutions should be investigated. However, the available resources during a tender study are often limited and trends in...
master thesis 2018
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Elzinga, Louwrens (author)
The main focus of this research is determining when dredging of reservoirs is feasible. First the main issues associated with the sedimentation of reservoirs are investigated. Most important are the loss of reservoir volume, sediment shortages downstream of the dam and possible blockage of water intakes.<br/>The sedimentation issues occur mostly...
master thesis 2017
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van den Hadelkamp, Rick (author)
Western shipyards have to distinguish themselves by complex ships with short delivery times. This entails that in most cases the production already starts while the engineering has not even been finished. If the pipes and cables are not routed when the steel plate are cut by the CNC machine, the associated penetrations have to be cut manually...
master thesis 2017
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Hoek, Jordi (author)
The St Lucia Estuary is Africa’s largest estuarine system and part of the iSimangaliso Wetland Park, which was listed as South Africa’s first World Heritage Site in December 1999. The St Lucia Estuary is connected upstream to Lake St Lucia and downstream it flows into the Indian Ocean. The St Lucia Estuary is located at a wave dominated coast...
master thesis 2017
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de Vilder, Lucas (author)
To combat global warming a transition towards renewable energy sources (RES) is essential. Although RES have much lower life-cycle emissions, they do not offer a continuous and fully predictable output like their fossil-fuelled counterparts. Energy storage is paramount in order to include the growing share of these intermittent sources into the...
master thesis 2017
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