Home \ International \ Robbins crossover TBM "Rosie" flexes her muscle
Robbins crossover TBM "Rosie" flexes her muscle
19/09/2018
Pubblicato da Redazione
Massive XRE Machine breaks through at Akron OCIT
On August 29, 2018, a 9.26 m (30.4 ft) diameter Robbins Crossover (XRE) TBM crossed the finish line at the Akron Ohio Canal Interceptor Tunnel (OCIT).
A press day followed on September 5, where companies and members of the media were invited to view the giant machine. The machine—dubbed “Rosie” in honor of Rosie the Riveter, an icon representing American women who worked in factories and shipyards during World War II—overcame tough ground conditions during the bore.
“One of the most challenging aspects of this job was that we launched right into the most difficult part. We had 60 m (200 ft) of soft ground, a very short reach, and then from there we went right into a mixed face for 180 m (600 ft),” said David Chastka, Project Manager for Kenny Construction, a joint venture contractor on the project with Obayashi. “It took everybody we had in the industry, everybody from Robbins, to fight through that first 240 m (800 ft).”
The TBM was designed for the project’s geology, which transitioned from soil to partial face shale to full face shale rock. The Crossover XRE included features of both EPB and Hard Rock Single Shield TBM types, with a versatile cutterhead that could be configured for hard rock or soft ground conditions. While in soft ground and mixed face conditions the machine operated in closed mode, but once it hit solid rock crews switched excavation to open mode.
“The machine had the power to get to the other side and made advance rates we never thought we were going to get. It was very successful in hard rock,” said Chastka. Advance rates once in full-face shale rock reached a high of 34 m (111 ft) in one day (two 10-hour shifts). Muck removal was achieved using a Robbins continuous conveyor, and conveyor availability remained high throughout the project. “I am most proud of the team that I have had the pleasure of being a part of,” said Don Smida, Robbins Field Service Technician. The overall scope of a project of this scale is immense, and the amount of daily cooperation & hard work that has been asked of The Robbins Company, the local unions, city staff, and Kenny-Obayashi is extremely important in reaching our common goals. I think we should all be proud of our teamwork going forward from a successful completion of the tunnel and into a successful disassembly of Rosie.”
Now that tunneling is complete, the machine will be disassembled and removed from its retrieval shaft this autumn. “The Ohio Canal Interceptor Tunnel is the largest public improvement project in our City’s history and a significant investment in our environment and infrastructure that will benefit Akron residents and businesses for generations to come,” said the City of Akron’s Mayor Daniel Horrigan. “Projects of this kind are inherently dangerous, and I am incredibly proud that the tunneling portion was completed without any major injuries, thanks to a dedicated team of professionals. And although Robbins is an international company with worldwide impact, we were pleased to be able to work with a local Northeast Ohio firm on this significant project.”
The OCIT Project for the City of Akron, Ohio, USA consists of the construction of a conveyance and storage tunnel system to control Combined Sewer Overflows (CSOs) for several regulators in the downtown Akron area. The EPA-mandated project includes the 1.89 km (1.17 mi) conveyance and storage tunnel, as well as drop shafts, diversion structures, consolidation sewers, and related structures.
Ultime notizie di OnSite News
Lifting
22/07/2024
Northbank Civil and Marine Purchases Tadano GTC-1600
Northbank Civil and Marine, a heavy civil, marine, and indus...
Earthmoving Machinery
19/07/2024
Rokbak partners with HMD to strengthen presence in West Africa
Construction, quarrying and mining companies in West Africa...
Lifting
19/07/2024
More reach, strength, and flexibility with new Grove rough-terrain cranes
Grove GRT765 and GRT780 were presented to customers at the M...
Lifting
17/07/2024
Sinoboom TB58RJ Plus telescopic boom lift reaches Australia
The tallest model in the Sinoboom range of diesel-powered te...
Lifting
11/07/2024
New Tadano AC 5.220-1 all terrain crane for Safar
Safar ordered the AC 5.220-1 with a heavy-duty short jib and...
Earthmoving Machinery
09/07/2024
Power China calls on Linnhoff asphalt mixing plant to improve rural Kenyan roads
• The Linnhoff TSD1500’s high-mobility design features four...
Altri International
International
26/07/2024
Exclusive new Cat Track Wear Sensor
Exclusive new Cat Track Wear Sensor provides remote, no-touc...
International
26/07/2024
Tamás és Zsolt Kft. took delivery of Liebherr LTM 1650-8.1
Tamás és Zsolt Kft. has added a Liebherr LTM 1650-8.1 to its...
International
25/07/2024
Cummins opens new powertrain test facility
Cummins has opened a new powertrain test facility to support...
International
25/07/2024
Grove GMK6300L-1 proves perfect for compact jobsite in Rotterdam
Kraanverhuur Boekestijn sent its Grove GMK6300L-1 for city c...
International
24/07/2024
MB Crusher breaks records and crushes challenges
MB Crusher is proud to support the construction of arenas, s...
International
24/07/2024
Hammer Lifte makes a full load of deliveries of Easy Lift spiders
Easy Lift's Danish dealer, Hammer Lifte, is always busier to...