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Project Results
Search our list of case studies to get background information on past and present projects. You can search the projects by machine diameter or machine type. Get performance data, machine features and geological characteristics to help you make an informed decision on your next project.
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Xi'an, China
In June and July 2010, commencement of Xi’an’s Metro Line 1 began with the launch of two Robbins machines from Changlepo towards Wanshou Road Station—the first TBMs tunneling on the project. The city’s 26.4 km metro Line 1 will run from north to south through the downtown area. Two 6.2 m diameter Robbins EPBs are currently excavating the new rail route, which travels directly below some of Xi’an’s most sensitive heritage sites.
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Madhya Pradesh, India
In 2011, Robbins marked its first use of Onsite First Time Assembly (OFTA) of a hybrid EPB at India’s Sleemanabad carrier tunnel.
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Mexico City, Mexico
Three 8.93 m (29.3 ft) Robbins EPBs are boring Lots 1, 3, 4 and 5 of Emisor Oriente, a vital wastewater line in Mexico City. The project was urgently commissioned by CONAGUA to prevent flooding during Mexico’s rainy season and increase the city’s wastewater capacity.
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Chengdu, China
中国 成都
The 6.3 m (20.5 ft) diameter Robbins EPB excavated Line 2, Lot 18 of the metro tunnels, achieving up to 129 m (423 ft) in one week–faster than at least 4 other TBMs working on the project in similar geology.
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Shanxi Province, China
中国 山西
The 25.4 km (15.8 mi) Pinglu Tunnel is one of the world’s longest tunnels ever excavated by a single TBM. The excavation required expert maintenance in highly abrasive sandstone and corundum with coal seams up to 12 m (40 ft) wide.
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