Scheibengipfel Tunnel – Breakthrough at the South Portal

The breakthrough of the Scheibengipfel Tunnel for the Reutlingen bypass has been accomplished. On January 27, 2014 a Max Bögl excavator broke through the last partition wall at the south portal with its ripper bucket. The 1620 m long section was driven by drill+blast in some 15 months, after trenchless operations commenced at the north portal on October 11, 2012.

The geology saw those involved presented by a number of challenges, first and foremost on account of the presence of methane gas and harder rock layers. However, work has up till now forged ahead successfully and safely. Altogether so...

Related articles:

Issue 2016-02 Germany

Scheibengipfel Tunnel: Completion by the End of 2016

The 1910 m long Scheibengipfel Tunnel is the key structure on the 3.1 km long Reutlingen bypass on the German federal main road B 312. The two-lane tunnel runs through the ridge of the...

Issue 2013-05 Switzerland

Roveredo Bypass: Tunnel Breakthrough

A 2-lane bi-directional tunnel is being built for the Roveredo Bypass – with shoulders at both sides and 2 lay-bys. It has up to 3,000 m overburden and runs north with 0.8 % gradient lying in an arc...

Issue 2021-05 Mexico

Rectangular Rock Mining Machine for Flat Invert

Employed by Mexico’s oldest silver mine, Fresnillo Plc, the MDM5000 is boring a mine access tunnel in andesite and shale with quartz intrusions that has defied earlier attempts using roadheaders. The...

Issue 2011-07 Germany

Breakthrough at Bleßberg Tunnel

The 8,314 m twin-track long Bleßberg Tunnel is the longest on the new Ebensfeld-Erfurt rail route – German Unity Rail Project No. 8 (VDE 8.1) and once commissioned will be the third longest...

Issue 2019-06

Clean Material Separation: Breaking out the Temporary Top Heading Invert in the Trimberg Tunnel

Numerous structures make the new building of the motorway A44, a link between the motorways A7 at Kassel and the A4 at Herleshausen in a west-east direction, a challenging infrastructure project....