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Tunnels

Bye-Bye to Bertha, the world’s largest tunneling machine

31 August 2017 by Gerardo Marote

wsdot This time-lapse video captures the difficult and challenging work to disassemble the world’s largest-diameter tunneling machine. For four months, crews cut, hoisted and trucked … Read more

Categories Tunneling Tags Tunnels

Start of TBM “Anna from Kloppa”

24 December 2016 by Gerardo Marote

Acciona Ghella Joint Venture Start of TBM “Anna from Kloppa” at the Follo Line Project (Norway) in November 2016.

Categories Deep foundations Tags Tunnels

Large Underground Excavated Caverns

8 December 2016 by Gerardo Marote

Rocscience Inc. The stability of large excavated caverns for underground powerhouses, metro stations and other facilities require careful design as well as precisely sequenced excavation … Read more

Categories Retaining systems Tags Tunnels

Vertical Shaft Sinking Machine

25 November 2016 by Gerardo Marote

Compact shaft sinking technology for all ground conditions. Herrenknecht

Categories Tunneling Tags Tunnels

The world’s first Variable Density Tunnel Boring Machine

3 July 2016 by Gerardo Marote

MRTMalaysia Two types of TBMs are being used to excavate the tunnel for the MRT Sungai Buloh-Kajang Line. In the portion of the alignment going … Read more

Categories Tunneling Tags Tunnels

View from a drone inside a tunnel executed by Bertha

2 June 2016 by Gerardo Marote

wsdot View from a drone inside the SR 99 tunnel, executed by Bertha. Bertha, also known as Big Bertha, is a 57-foot-diameter (17.4 m) tunnel … Read more

Categories Tunneling Tags Tunnels

How a Tunnel-Boring Machine Drills Underground

6 August 2014 by Gerardo Marote

“Video courtesy of CDM/HMM Joint Venture – For engineering enthusiasts and anyone who’s interested in the mechanics of siphon construction, this animation shows exactly how … Read more

Categories Tunneling Tags Tunnels

Meet Crossrail’s giant tunnelling machines

6 August 2014 by Gerardo Marote

Crossrail Project “Crossrail will use eight tunnel boring machines (TBMs) to construct the new tunnels under London. These huge machines will work 24 hours a … Read more

Categories Tunneling Tags Tunnels

The longest tunnel in the world

6 August 2014 by Gerardo Marote

Largest Dams “The Gotthard Base Tunnel (GBT) is a railway tunnel in the heart of the Swiss Alps expected to open in 2016. With a … Read more

Categories Tunneling Tags Tunnels
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Geotechnical Master
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