Redevelopment of Unna Ring Tunnel/D

Traffic Bottleneck sealed by Grouting

When road tunnels must be renovated through being sealed then this can be attributed to 2 reasons: either leaks and moisture have spread in the tunnel in the course of the years – or, how-
ever, some dramatic event has occurred, which suddenly causes the tunnel to leak. The latter happened in the city of Unna in the Ruhr District. The 3-lane Ring Tunnel – a main urban traffic artery and first thoroughly renovated at great expense back in 2008 – was seriously damaged by an accident and thus had to be resealed. One morning in September 2010 the loading crane of a heavy lorry travelling through...

Related articles:

Issue 06/2022 Sealing

Karoline-Luise Tunnel in Karlsruhe – Coating and Sealing Systems

Commissioning in October 2022 In mid-October 2022, the Combined Solution Karlsruhe was fully operational with the commissioning of the new road tunnel under the Kriegsstraße. The goal of the new...

more
Issue 03/2013

Finne Tunnel: Innovative targeted Resealing of Segment Bore Joints – Part 1

1 Introduction The joints closed by compressed sealing elements between the segments are potential weak points in monocoque tunnel linings (Fig. 1). Joints are practically entirely responsible for...

more
Issue 03/2022 Switzerland

Joint Venture Gubri Wins Contract to Renovate Original Tubes of the Gubrist Tunnel

Total Contract is Worth 177 Million Euros The total contract is worth 177 million euros. The project starts with preparatory work in autumn 2022 and will last about four years. The existing tunnel...

more
Issue 04/2013

Finne Tunnel: Innovative targeted Resealing of Segment Bore Joints – Part 2

7 Leaks in the Segment Bores of the Finne Tunnel The Finne Tunnel was built as part of the VDE project 8.2 “New Erfurt-Halle/Leipzig rail route” by the JV Finnetunnel, consisting of the companies...

more
Issue 03/2018

New Joint Sealing Process for Segment Tunnels

Targeted Sealing of Leaks in Segment Linings In targeted sealing of leaks, the direct route through the joints between segment linings is used in order to drill through the gasket and inject grout on...

more