On 14 February 2025, the two tunnel boring machines (TBMs) for driving the second tube of the Gotthard Road Tunnel were started in Göschenen and Airolo. Numerous guests and employees of the...
The structural work on the north construction site of the FAIR particle accelerator, one of the largest and most complex construction projects in international cutting-edge research, is coming to an...
Specialist cable manufacturer Hradil has developed a new hybrid cable that is specially designed for demanding applications in mining and tunnelling. Areas of application include tunnel boring...
In November 2024, Dr.-Ing. Friedrich Krüger turned 80 years old. Anyone who knows him is well aware that, despite this special birthday, he does not like too much noise being made about his person. On...
After his trip to China for the World Tunnel Congress in April 2024 (see tunnel issue 4/2024), Prof. Dr.-Ing. Alfred Haack had actually decided not to accept any more invitations from abroad due to...
As part of the STUVA Conference, up to five young engineers are regularly given the opportunity to present their projects or research topics on the big stage in the “Youth Forum” competition and to be...
Whether “Gateway to the World” or “Pearl of the North” – hardly any other city in Germany has as many affectionate nicknames as the old but lively Hanseatic city of Hamburg (Fig. 1). With almost two...
More and more electricity from renewable sources, hydrogen as an alternative energy source, and the expansion of district heating: the energy transition is in full swing worldwide, particularly in industrialized countries. It requires an enormous amount of new underground infrastructure for the generation and transportation of environmentally friendly energy. This also presents new challenges and opportunities for the tunnelling and trenchless construction industries and for manufacturers of mechanized tunnelling technology. The required infrastructure can be built using both tunnelling and trenchless installation methods. Which method offers the optimal solution depends on many factors, such as the intended use, size and location of the project. Using specific examples, this article presents the advantages in the realization of different types of infrastructure for the energy transition.
Pre-grouting and securing the tunnel face or the annular gap grouting of the segmental lining: anyone familiar with these challenges will also be familiar with the search for a safe injection process...
