At the Auberg Tunnel in Bavaria, Germany, the connection reinforcement between the tunnel invert and the vault constructed later above it was skipped (Fig. 1). The arrangement of an unreinforced...
The world´s largest known resource of polyhalite minerals is located in northern England in the county of North Yorkshire, close to Whitby. To unearth the mineral, which is used in the production of...
In mid-March 2021, the Swiss Federal Roads Office (FEDRO) has awarded the 86.6 million Swiss francs (78.5 million euros) contract to build a 4 km access shaft for the second Gotthard tube (Lot 243) to...
Generation change at the management level of the Stuttgart-Ulm rail project: Michael Pradel (47) will join the executive board of DB Projekt Stuttgart–Ulm GmbH (PSU) on 1 May 2021, where he will take...
On 26 February 2021, DSI Underground SMART, a wholly owned subsidiary of DSI Underground completed the acquisition of the virtual reality training specialist Edvirt. Edvirt provides products and...
Since the 6th Rock Mechanics and Tunnelling Day could not take place in 2020 due to the Corona pandemic, the event is now planned for 10 June 2021. However, the regulations to be expected due to the...
In March 2021, the Swiss construction group Implenia was awarded the contract for the construction of the Lysaker–Fornebu railway tunnel in Norway. The contract consists of planning and building a...
In the municipality of Fortezza works on the Isarco River Underpass construction site, which is the southernmost construction lot of the Brenner Base Tunnel, are proceeding at full speed. The complex...
The wear of tunnelling tools successively reduces their excavation capability, which slows down the penetration rate of the tunnel-boring machine (TBM) and eventually requires a replacement of the...
