Finne Tunnel: Driving Operations running smoothly

Driving Operations at Finne Tunnel

The Finne Tunnel with a total length of 6969 km is the longest on the DB AG’s new Erfurt–Leipzig/Halle route and the only tunnel on the entire line between Munich and Berlin, which is having both tubes constructed by 2 tunnelling machines offset to each other. In contrast the other 2 tunnels on the route are being produced by the NATM with inner shell. The project was presented in tunnel 6/2007 and the current state of ongoing operations is presented in the following article.

The tunnel consists of 2 parallel tubes with an external diameter of roughly 11  m, a 45  cm thick segmental lining and connecting passages set every 500  m between the tubes. This results in 13 escape and rescue passages as well as 3 for technical facilities. As both tunnels run parallel to each other and the driving concept is identical, the following article will refer only to a single tunnel (Fig. 1).
The prevailing geology is characterised by intermittent beds of clays, siltstones and sandstones over the first 1,500  m, which are completely broken up at the 1st and 2nd Finne fault. In...

Related articles:

Issue 02/2019 Turkey

TBM-Excavation of Turkey’s longest Water Tunnel

Excavation of Turkey’s longest water tunnel came to an end in December 2018. To get there, a 5.56 m diameter Robbins Crossover (XRE) TBM and the contractor JV of Kolin/Limak had to overcome dozens of...

Issue 05/2011

Palomino Project: First Double Shield TBM in the Dominican Republic

1 Island Pioneers The “Anacaona” Double Shield TBM (4.5 m diameter) (Fig. 1) started its work where Columbus’ first great voyage of discovery ended in 1492. On the Caribbean island of Hispaniola,...

Issue 08/2009 TBM Technology

Engineering Innovations for Mix-Shield and EPB Technology for two major Projects in Scandinavia

Two trends have become discernible in the development of mechanised tunnel driving technology in recent years: firstly demands on the engineering technology have risen significantly. Secondly ever...

Issue 01/2015

Waterview Connection: TBM Alice has started its second drive

The tunnel boring machine Alice – named after the main character of “Alice in Wonderland” – excavated the first 2.4 km long tunnel in just eleven months, with best performances of 126 m per week...

Issue 02/2015

Waterview Connection Tunnels Auckland: TBM Design and Tunnelling Experiences

Introduction For New Zealand’s largest road infrastructure project, the Waterview Connection in Auckland, one of the world’s largest TBMs successfully finished the excavation of the first of two...