The tunnels of the 1,800 km Swiss national road network are among the safest in the world. However, standards and guidelines evolve continuously. The Swiss Road Authority (ASTRA) is addressing this...
Metro construction in Sofia is being expanded by means of the new Line 2; a 17 km long route is planned from the Obelya Terminal for Line 1 via Nadejda, the Central Station and the National Art...
After the fires in the Mont Blanc, Tauern and Gotthard, in the interim safety regulations have been introduced to protect motorists and emergency services. For example smoke is to be removed quickly...
The second bore for the Tauern Tunnel on the A10 motorway is 6,400 m long and was driven by mining means within 22 months. It was opened on April 30, 2010 following less than 4 years’ construction,...
On 4 March 2010 excavation had to be stopped in the west tunnel of the Gotthard Base Tunnel some 9 km from the Faido multifunction station due to a rock inrush, and exploratory bores had to be...
22.05.2015Erkelenz, Germany CREG TBM Germany GmbH Technical engineers with focus areas in Slurry TBM & Hard rock TBM (Gripper, Telescope TBM) more information (Download PDF)...
Shotcrete is a high-performance product, which is placed through spraying at high speed and compacted by the impact: By adding shotcrete accelerator (accelerator) at the nozzle the shotcrete sets...
The main application area for earth pressure balance (EPB) shield machines is soil with at least 30 % of fines. Especially in coarse-grained material and in connection with ground-water pressure, the...
In tunnel 5/2010 we examined the foundation of the STUVA and the diverse tasks it was faced during the course of the past 50 years. Upon looking back it can be determined that tunnelling technology...
