Tunnel structures are not only among the most demanding construction projects on engineering criteria, their investment costs also put them amongst the most expensive. Another aspect to be added is...

In April 2019, a 3.5 m diameter open-type Main Beam TBM and its crew broke through at the Galerie des Janots Tunnel in La Ciotat, France. The 2.8 km long tunnel, excavated in limestone known to have...

Around 2000 participants from 73 countries gathered in Naples, Italy from May 3 to 9, 2019. The occasion was the 45th General Assembly of the ITA (International Tunnelling and Underground Space...

The Red Line is the first line of the Tel Aviv urban railway. 2 x 2.7 km tunnels were driven using two EPB tunnel boring machines (EPBs) from Herrenknecht for the eastern section of the Red Line. It...

From June 4 to 6, 2019, the Swiss Tunnelling Society (STS) staged the 18th Swiss Tunnel Congress in the concert hall at the Lucerne Culture and Congress Centre. Around 700 visitors took part in the...

The DB Projekt Stuttgart–Ulm GmbH celebrated the start of the excavation for the part of the Rosenstein S-Bahn Tunnel to be driven from the bank of the Neckar on July 16, 2019. The future suburban...

More than 1000 ambulance and fire service personnel, 300 actors and more than 200 referees, observers and guests: the exercise in the Fleckberg rail tunnel in Thurin­gia, which took place on 22 June...

Together with Porr Bau GmbH, MC Bauchemie has developed a new TBM backfill grout based on a geopolymer that is suitable for use in swelling rock formations. This cementless annular gap filler prevents...

On May 23, 2019, the 5th Rock Mechanics and Tunnelling Day was held at the WBI-Center in Weinheim an der Bergstraße. The informative brief conference with high-grade lectures was staged jointly by the...

Reducing the time it takes to get between destinations within the metropolitan region while increasing the rail transport capacity – the Danish capital Copenhagen is expanding its metro system with...