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Events | 16 September 2020

Boring Through 48 Fault Zones and 26 Bar Pressure

Difficult ground doesn't begin to describe the challenges overcome at a recent tunnel in central Turkey. The breakthrough of a 5.5 m diameter Robbins Crossover XRE TBM at the Gerede Water Transmission Tunnel was a feat of modern construction, involving 48 [...]

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Difficult ground doesn't begin to describe the challenges overcome at a recent tunnel in central Turkey. The breakthrough of a 5.5 m diameter Robbins Crossover XRE TBM at the Gerede Water Transmission Tunnel was a feat of modern construction, involving 48 [...]

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News | 25 August 2020

Robbins Single Shield breaks through Turkey’s Hardest Rock

On July 24, 2020, a jubilant ceremony marked a milestone for southern Turkey’s arduous Bahçe-Nurdaği High-Speed Railway Tunnel. The first TBM-driven portion of tunneling using an 8.0 m (26.2 ft) diameter Robbins Single Shield machine is now complete. [...]

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On July 24, 2020, a jubilant ceremony marked a milestone for southern Turkey’s arduous Bahçe-Nurdaği High-Speed Railway Tunnel. The first TBM-driven portion of tunneling using an 8.0 m (26.2 ft) diameter Robbins Single Shield machine is now complete. [...]

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Videos | 20 August 2020

High-Speed Tunneling in the Himalayas: Over 1,200 Meters a Month at Bheri Babai

Nepal's first TBM-driven tunnel was a success by any standard: The Robbins Double Shield machine bored up to 1,200 meters a month and finished the Bheri Babai Diversion Multipurpose Project nearly a year early. Listen in on our conversation with Brad Grot [...]

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Nepal's first TBM-driven tunnel was a success by any standard: The Robbins Double Shield machine bored up to 1,200 meters a month and finished the Bheri Babai Diversion Multipurpose Project nearly a year early. Listen in on our conversation with Brad Grot [...]

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Без категории | 24 June 2020

To Grout or Not to Grout? In Rock Tunnels encountering High Water Pressure, Grouting can offer Great Benefits over Slurry

When you’re faced with a hard rock tunnel where there are expected significant sections under high water pressure, which tunneling method do you choose? While Slurry Shield tunneling has a long history of addressing this problem, this method has not alw [...]

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When you’re faced with a hard rock tunnel where there are expected significant sections under high water pressure, which tunneling method do you choose? While Slurry Shield tunneling has a long history of addressing this problem, this method has not alw [...]

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News | 2 March 2020

Tough TBM breaks through after navigating Faults, Karst, and More

In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi Province, China. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows. [...]

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In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi Province, China. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows. [...]

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