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  Experiences in the construction of the Interstation Tunnels of L-6 Santiago Subway (Chile)

  This work presents the experiences during the construction of 15 Km of the Interstation Tunnel of L-6 of Santiago Subway (Chile), where the Consortium Zañartu-Geocontrol proposed a new method for constructing this tunnel. The proposed new method takes advantage of the excellent behaviour of the ground, called “ripio de Santiago”, to excavate the tunnel by full face. The results obtained by the new method are more than three times higher than the obtained by the former methods.

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