NFM Technologies has just signed an agreement with the Metro Riyadh line 3 limited” consortium to supply a 10.16m-diameter tunnel boring machine to excavate the red line of the Saudi capital’s metro system.
The consortium features companies such as Impreglio SpA, Larsen & Toubro Limited and Nesma & Partners Contracting Co. Ltd. It is responsible for building the 40.7 km of line 3, the longest of the project. Line 3 runs in the East-West direction across Riyadh, with 20 stations and a 6km underground section.
To excavate the tunnel, NFM Technologies will supply an earth pressure balance tunnel boring machine. Weighing 1400 tonnes and 100 m long, the boring machine will excavate at a maximum depth of 40 m, in soil mainly composed of limestone and loam.
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The machine will be built, assembled and tested in the NFM workshops in Le Creusot, Burgundy. Delivery to the client is scheduled for this summer.
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