Germany – Finne Tunnel – Construction Progress

The almost 7 km long Finne Tunnel belongs to the new 123 km long Erfurt–Halle/Leipzig route part of the German Unity Transport Project. The tunnel is to be equipped with 2 single-track tubes each with an internal diameter of 9.60 m set 25 m apart. A special feature of the sophisticated project is the application of 2 tunnelling machines at the same time – partly as hydroshields and partly as solid rock machines with 10.50 m diameter. The mechanically driven tunnel tubes are to be lined with a single segmental shell.
The first tunnelling machine began work at the end of April 2008 and in the interim has excavated the initial 1.5 km long section with tricky geological conditions according to schedule. Peak rates of up to 24.5 m/d were attained. The second machine began operating at the end of November 2008 to drive the second tube, which meant that the experience gained in driving the first one could be applied. The excavation is scheduled to be completed in mid-2009 and the lining by 2012. The new route is due to go into service in 2015.

G. B.




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