Turkey

Kargi Hydroelectric Project: TBM conquers difficult Ground

Multiple fault zones, variable face conditions and squeezing ground requiring extensive bypass tunneling: These were just a few of the challenges overcome in order to successfully complete Turkey’s Kargı Kızılırmak Hydroelectric Project. A Robbins 10 m (32.8 ft) diameter Double Shield TBM achieved breakthrough on the project July 5, 2014 after a run through some of the most difficult conditions ever encountered by Robbins field teams. The machine type, selected jointly by the owner, consultants, Robbins, and the contractor Gülermak of Turkey, excavated through 7.8 km (4.8 mi) of complex...

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Turkey

Yamanli II: In tough Turkish Ground

In December 2013, a 4.3 m (14.1 ft) Robbins Double Shield TBM broke through according to plan after boring a 9.3 km (5.8 mi) tunnel in Turkey’s Adana Province for the Yamanli II Hydroelectric...

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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...

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Laos

Single Shield Launched on Laotian Hydro Scheme

In February 2010, contractor CMC di Ravenna oversaw the launch of the first tunnel boring machine ever to excavate in Laos. The 7.6 m (25.1 ft) diameter Robbins Single Shield TBM is digging a new...

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Turkey’s tough Geology: The Genesis of today’s Crossover TBMs at Karg?

The K?z?l?rmak – Turkish for “Red River” – is the longest river in Turkey. The project includes a 13 m high, 450 m wide earth dam with a concrete spillway in the southern end and a water intake...

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Russia

Double Shield sees the Light in Sochi

In early March 2011, a 6.2 m (20.3 ft) diameter Robbins Double Shield TBM crossed the finish line in Sochi, Russia. The machine completed a 4.5 km (2.8 mi) long section of tunnel that will ultimately...

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