Herrenknecht TBMs to Build Quito Metro

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Shown after assembly in Herrenknecht’s Schwanau, Germany, facility, two identical 9.36-m EPB TBMs will excavate more than 17 km of new tunnels for the Quito Metro in the Ecuadoran capital.

Shown after assembly in Herrenknecht’s Schwanau, Germany, facility, two identical 9.36-m EPB TBMs will excavate more than 17 km of new tunnels for the Quito Metro in the Ecuadoran capital.

In Quito, Ecuador, one of the highest metro systems in the world is currently being built. The first line will run over more than 20 km through the elongated capital. At an altitude of more than 2,800 m (9,200 ft) above sea level, two recently completed Herrenknecht EPB Shields are set to work their way through the volcanic ground for the Quito Metro beginning in spring 2017.

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The two TBMs were built at the Herrenknecht facility in Schwanau, Germany, and will soon be shipped to South America. Currently in the Ecuadorian Andes, work on the Metro de Quito is in full swing – the first two of the planned 15 metro stations are already under construction. In a few months the site crews will be joined by the two Herrenknecht tunnel borers. The EPB Shields with diameters of 9.36 m (30.7 ft) were completed in late August 2016. The mayor of Quito, Dr. Mauricio Rodas, visited the Ortenau region for the technical acceptance. Together with representatives of contracting joint venture Acciona /Odebrecht and client Quito Metro, the guests admired and inspected the concurrently assembled and completed machines in detail.

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Quito Mayor Dr. Mauricio Rodas (front left) talks to Martin-Devid Herrenknecht, engineer and son of company founder Dr.-Ing. E.h. Martin Herrenknecht, at the technical acceptance of the two EPB Shields in Schwanau.

The planned tunnel alignment of Metro Line 1 runs at a depth of about 20 to 25 m below the city. The new rail system is an important step in the modernization of the metropolis and in future will transport more than 350,000 passengers daily. At the moment the high volumes of traffic regularly cause congestion and smog. The switch to a more environmentally friendly mass transportation system is designed to remedy the situation and save up to 30,000 tonnes of CO2 emissions per year.

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