The airport tunnel and the connected underground airport mainline and regional railway station are important components of Stuttgart 21, facilitating the previously time-consuming journey to and from...
The launch of the last two tunnel boring machines of the Brenner Base Tunnel was celebrated with a ceremony on 18 September. “Wilma” and “Olga” will drive the two main northbound tunnels in the...
In mechanized tunnel construction, prefabricated segments are used as the tunnel lining. As the tunnel boring machine has a larger diameter than the tunnel lining for construction reasons, an annular...
Upon completion, the Filder Tunnel will connect Stuttgart’s Central Station to the Filder Plain via the new high-speed line between Stuttgart and Ulm. The tunnel will ascend around 153 metres. At...
The new FAIR (Facility for Antiproton and Ion Research) particle accelerator has been under construction in Darmstadt (Germany) since 2017. The huge facility is being built on a site of around 150 000...
After 50 years of operation, the 1km-long Tunnel de La Clusette on the H10 main road in the Swiss canton of Neuchâtel no longer meets the required safety standards. As part of the “H10 – Tunnel de La...
In the second half of the 19th and early 20th century, hundreds of railway tunnels were built in Europe. They are largely still in operation today. In the coming decades, a considerable number of...
This article from tunnel 5/24 examines two approaches to the design of tunnelling: the AJRM (Anisotropic Jointed Rock Model) and classification systems based on rock mass parameters. In the opinion of the authors, the application of these classification systems in sedimentary rocks is associated with major risks and does not provide sufficient reliability in complex geological conditions. It is suggested that the AJRM should be further developed instead of these systems. (Image: Ingenieurgemeinschaft A44, Bauabschnitt 4.2 und 5)
Nepal’s Sunkoshi Marin Diversion Multipurpose Project (SMDMP), at 13.3 km in length, is one of the longest TBM-driven tunnels through the Himalayan mountain range and is only the second such tunnel to...
