Topcut underground
A Topcut processor was used during renovation work on the Tanzberg road tunner
A Topcut concrete processor from Wimmer Hartstahl GmbH proved the ideal solution during renovation work on the Tanzberg road tunnel in Austria, which consists of two side-by-side 82,000 ft (2,500 m) long tunnels. The north tunnel, built in 1983 features fresh air fans and an old air extraction system via an intermediate reinforced concrete deck, while the south tunnel features a more traditional lengthways ventilation system.
At the beginning of 2008, it was decided to upgrade the north tunnel ventilation system and German contractor Tieber was brought on to remove the intermediate deck. This was achieved through the use of a process Tieber had developed for work it carried out in 2004 on the Amberg Tunnel on the Rhineland motorway. This involved the use of the Topcut tool to break up the heavily reinforced concrete deck, which was between 15 and 20 cm thick.
The resulting debris fell into a specially fabricated hopper manufactured by Tieber, and was then transferred onto a truck for removal off-site. This resulted in a substantial reduction in the amount of equipment required for the job, reducing the impact to the remaining structure of the tunnel.
Comments (0)
There are no comments on this article