France’s recently completed Galerie des Janots featured some unexpected challenges: Karst cavities large and small were found throughout the bore as well as two large, uncharted caverns. During excavation with a Main Beam TBM, crews encountered an 8,000 cubic meter cavern studded with stalagmites and a 4,500 cubic meter cavity directly below the bore path. How did the crew overcome the conditions and continue past the voids?
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.
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 Grothen P.E., Robbins Technical Director, and Missy Isaman P.E., Robbins Project Engineer, as we discuss the challenges, lessons learned, and recommendations for future tunnels in mountainous geology.
Take a trip with Robbins to the scenic Thuong Kon Tum project in Vietnam where a 4.5 m Main Beam TBM has completed boring. After being left in high humidity and groundwater for 14 months, it was up to Robbins and contractor CC47 to step in and turn this project around. Watch the video for an inside look at how Robbins crews tackled multiple fault zones and major water influxes, all while maintaining the required advance rates.
Robbins Crossover TBMs are the adaptable solution to the world’s most challenging tunnel projects. This video explains how Robbins Crossover XREs, a hybrid of Hard Rock and EPB TBMs, work and why they are the solution for mixed ground tunnels worldwide.
Watch a 9.26 m Robbins Crossover XRE TBM, dubbed “Rosie” in honor of Rosie the Riveter, tackle tough ground on the Akron Ohio Canal Interceptor Tunnel (OCIT).
In this short clip, Robbins Field Service personnel discuss how they handled boring through hard rock, fault zones, and water inflows at the Thuong Kon Tum Hydro Project in Kon Tum Province, Vietnam.
Robbins and joint venture contractor Kenny/Obayashi worked together to achieve a short startup schedule at the Akron Ohio Canal Interceptor Tunnel. Field Service personnel assisted in TBM assembly and trained crews to achieve a smooth startup. Watch this short for a quick word from Kenny Construction’s Project Manager David Chastka on working with Robbins Field Service.
In this short video, David Chastka, Kenny Construction Project Manager, discusses how Robbins Field Service and his team surmounted the challenge of launching immediately into difficult ground at the Akron Ohio Canal Interceptor Tunnel.
Robbins has been the foremost manufacturer of Tunnel Boring Machines and underground construction equipment for nearly 70 years. Journey through the company history as told by Robbins employees, and hear about the latest innovations and design concepts that make Robbins a thought-leader in the industry.
- Encountering Caverns in France: TBM Tunneling in Karst Conditions
- 48 Fault Zones and 26 Bar Pressure: Boring Turkey's Gerede Water Transmission Tunnel
- High-Speed Tunneling in the Himalayas: Over 1,200 Meters a Month at Bheri Babai
- When the Going Gets Tough: Thuong Kon Tum Hydroelectric Project
- The Crossover in 3D: Robbins XRE TBMs