“It‘s dark in front of the pick” – this old German miners’ proverb applies to all types of underground work. Whether it‘s ore mining, fossil fuel extraction or transport and infrastructure tunnelling...
In the tunnel industry, sustainability is no longer just a buzzword. The International Tunneling and Underground Space Association (ITA) itself has taken up this subject and plans to pursue it...
This article describes the development of a high early strength anchor mortar that is to be used in tunnel construction to secure the outer lining of the tunnel. Anchor mortars currently available on...
Extension of the U3 in NurembergOn 23 March 2022, the breakthrough on the last convetionally excavated tunnel section for the extension of underground line 3 in Nuremberg was completed exactly on...
A Kemroc KR 165 rotary drum cutter in combination with a heavy special Liebherr R 960 tunnel excavator became one of the key machines in Nuremberg for driving metro tunnels. Alternating with a classic...
Climate change, limited natural resources, and a persistent shortage of skilled labour: the global construction machinery industry too must face up to the major problems of the present times. Modern...
When it comes to traffic safety in a tunnel, optimal lighting makes a big difference. To enable the human eye to adapt to the vastly different lighting conditions outside and inside, it’s essential...
The 5.7 km long Kerenzerberg Road Tunnel on the A3 national road is undergoing a safety upgrade and maintenance 35 years after it was opened. A key element of this maintenance is the new construction of a parallel safety gallery. The standard cross section of the safety gallery is characterised by combined usage as a service tunnel with an escape tunnel as well as an exhaust duct.
After numerous digital workshops with lectures and subsequent discussion rounds, it was finally back to the construction site for us, the members of the Forum for Young Engineering Professionals...
The Swiss Federal Roads Office (FEDRO) has announced its decision to award the Gotthard main northern section to the JV “secondo tubo” (Implenia 60%/Frutiger 40%). The order for the 7.9 km long...
