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Milestone for hard Rock Tunnelling: Final double Breakthrough Follo Line in Norway

 

The construction of Norway's longest railway tunnel marked a breakthrough for the use of tunnel boring machines in hard rock tunnelling. In Scandinavia long rail tunnels have hitherto been drilled and blasted rather than bored. In the Follo Line Project, the tunnel boring machines made a convincing case for themselves all the way through the extremely hard Norwegian rock. Four tunnel boring machines (TBMs) by Herrenknecht worked simultaneously to excavate the main part of two 20-kilometer railway tunnels between Oslo and Ski. On February 26, 2019, the final double breakthrough of the Double Shield TBMs "Anna" and "Magda" successfully completed the challenging mission and drew a spectacular close.

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New Drains for Singapore

In Singapore, a Herrenknecht tunnel boring machine (EPB Shield, Ø 5,250 mm) excavated two large drains for the Stamford Diversion Canal. The challenge: winding bottlenecks and an inner-city drive in one of the most densely populated cities in the world.

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Bossler Tunnel in Germany: »Käthchen« achieves Breakthrough

 

The site crew working with tunnel boring machine »Käthchen« (»Katie«) has completed the second tube of the Bossler tunnel. The breakthrough near Mühlhausen im Tale in Baden-Württemberg is another milestone in the construction of the Stuttgart-Wendlingen-Ulm railway line. The Bossler Tunnel is part of the Stuttgart-Ulm railway project and is expected to go into operation in 2022.
Construction of the two tubes was carried out differently than initially planned. The TBM (Ø 11,340 mm) was able to excavate almost the entire route. At up to 38 meters per day, the work progressed extremely quickly.

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New Routes to the Sinai – final Breakthrough in gigantic Road Tunnels at the Suez Canal

On the Christmas weekend, Egyptian President H.E. Abdel Fattah al-Sisi rang in a new era for the Sinai Peninsula: on Saturday, December 23, 2017, S-960 (Ø 13,020 mm), the third of four Herrenknecht Mixshields, completed tunnelling for the first of two new twin-tube road tunnels under the Suez Canal at Ismailia. The tunnels at Port Said and Ismailia, designed to link the Sinai Peninsula more closely to the Egyptian heartland in future, will open up new economic opportunities. Instead of spending up to 5 days in long car queues for the ferry, crossing the Suez Canal via the efficient tunnels will only take 10 minutes in future.

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Hard Rock TBM »Ulrikke« takes Tunnelling in Norway to the next Level

Whether it's a world record with the longest railway tunnel on earth at the Brenner or the epoch-making Gotthard project: the business of mechanized tunnel boring through hard rock is currently reaching new heights in Europe. Now Scandinavia is discovering the advantages of mechanized tunnelling. With the breakthrough at the Ulriken Tunnel, the first major tunnel project in Norway using a Herrenknecht Gripper TBM has been successfully completed.

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Breaking through to speed Millions of Rail Journeys in Norway

After 21 months of tunneling through Norwegian rock, success was just 1.5 meters away, through a final rock face. On August 29, our Ulriken Tunnel team crossed that final distance and became stars, if just for a day. Join them as they complete this major effort to eliminate a bottleneck on a busy rail line to the country’s capital.

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Final double Breakthrough at the Emscher Sewer in Germany

 

With the breakthrough of the last two tunnel boring machines into the target pit in Oberhausen-Biefang on June 12, 2017 the tunnel and pipe jacking work for the Emscher sewer has been completed. Over a period of 25 years numerous Herrenknecht tunnelling machines and a wide range of additional equipment were successfully used in the Europe-wide unique environmental and sewage project of Emschergenossenschaft.

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Herrenknecht TBM constructs large Road Tunnel in Switzerland

 

The shell of the Belchen rehabilitation tunnel has been completed. Tunnelling ended successfully in Eptingen in the Swiss canton of Basel-Country on June 21, 2017, three months ahead of schedule.

The tunnel boring machine (TBM) (diameter 13.91 m) designed and manufactured specifically for this purpose at the Herrenknecht plant in Schwanau, Germany, excavated 3.2 km of tunnel through complex geology in only 16 months. The new structure is the prerequisite for rapid and economic rehabilitation of the two existing parallel road tunnel tubes.

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