Thursday, 7 November 2013

São Paulo attempts dual tunnelling a metro line for the first time

Tatuzão and Megatatuzão side by side
As of this week the extension to the Line 5 metro line is being worked on by two giant Tunnel Boring Machines (TBMs) instead of one. This is the first time ever São Paulo, or Brazil, has ever attempted dual tunnelling on a single metro line.

The extension, which runs from Campo Belo to Chácara Klabin station in Vila Mariana and costs R $7.5 billion, will add another 12km of track and 11 new stations.

However don’t expect it to be open any time soon. The new TBM humourously known as Tatuzão and it’s partner in crime Megatatuzão will only dig at a rate 15metres per day. That means the 1.9 km tunnel between LargoTreze, and the first of the new stations, Adolfo Pinheiro, is expected to be completed only by January next year.

So we can wait a while for the extended Lilac Line 5 to connect with the Blue Line 1 and Green Line 2 . Still, progress is progress.

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