Re-use of immersed tunnels
An innovative method for recovering, regenerating and reusing immersed tunnels by temporarily re-floating
Arne de Jong (TU Delft - Civil Engineering & Geosciences)
Mark Voorendt – Mentor (TU Delft - Civil Engineering & Geosciences)
Sebastiaan N. Jonkman – Graduation committee member (TU Delft - Civil Engineering & Geosciences)
Erik-Jan Houwing – Graduation committee member (TU Delft - Civil Engineering & Geosciences)
Marcel 't Hart – Graduation committee member (Haskoning)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Immersed tunnels, located in waterways, could be a limiting factor in the dredging in waterways. This dredging is required since cargo vessels draught increased the past decades. In this thesis a new method is defined for temporarily, effectively, re-floating immersed tunnels. With this method extra risks arise, for these risks’ measures are given. The validity of this method is proven by applying the method a relevant case study. This case tunnel is the Wijkertunnel, consisting of six elements and a total immersed length of 600 meters. It showed that the maximum deepening available is 6.60 meters. It is concluded that the impact of the risk measures is limited. Finally other immersed tunnels are compared to the Wijkertunnel. For these tunnels the different types are described, and the impact of these differences are discussed. It showed that for all the immersed tunnels the method is viable, except for immersed tunnels with a very few elements.