According to Brenner Basistunnelgesellschaft (BBT SE), despite intensive negotiations and efforts in recent months, no agreement could be reached between BBT SE and the contractor, ARGE H51 regarding...

The article describes the technical innovative supporting technologies that helped to safely drill and waterproof cross-passages under the sea in a major road tunnel project in Hong Kong, the Tuen...

As part of the virtual World Tunnel Congress 2020 from 11 to 17 September, the General Assembly of the International Tunnelling and Underground Space Association (ITA) with representatives of the 78...

Due to the constantly changing situation regarding the coronavirus pandemic and the resultant lack of planning certainty, InnoTrans is to be postponed until 2022. After consulting with international...

The 35 km long Lötschberg Base Tunnel is to be extended over a length of 14 km between Ferden and Mitholz according to the will of the Swiss parliament. This would provide 28 km of double-track access...

Four out of five major projects are not completed within the planned time and the budgeted costs. The reasons for this great uncertainty lie in the lack of integration of a quantitative risk analysis...

The Turkish State Railways Directorate (TCDD) is aiming to overhaul the railway connection in southeastern Turkey by providing a shorter, faster route in one of the country’s busiest railway...

The conference Beyond a Tunnel Vision on November 27th 2020 has become a truly European collaboration: instead of meeting each other in The Netherlands, attendees can meet online through sessions that...

The 27.3 km-long twin-tube Semmering Base Tunnel in Austria has been under construction since 2012. On contract SBT 2.1, a good 8 km of each tube is driven using two shielded hard rock tunnel boring...

In the course of tunnel drives, pre-support measures can be necessary to waterproof or consolidate the surrounding ground. Since such measures can sometimes drastically slow the advance rate, their...