Transit Gas Pipeline – Priesnig Tunnel


Strabag / Cogeis / Icop

Cost of works:

€ 35 million

Period of Activity:

2004 - 2006

Priesnig tunnel is a 2.550m-long tunnel in North-East Italy and is part of the alignment Tarvisio - Malborghetto, Lot A of 48” new pipeline. This pipeline, through which the methane gas (pressure of 75 bar) is transported,as part of the expansion program of importing natural gas from Russia.

— Project Description:

Tunnel excavated using an open TBM, with diameter 5.8m, gradient 4% - 9% and overburden of about 300m, for the laying of pipes of diameter 1200mm. The lining was deigned utilizing rings made of steel elements (Liner Plates) in the first phase and by a reinforced concrete casting for the final lining. The rock mass was characterized by a geological context strongly influenced by tectonic lineaments, swelling lithotypes and groundwater inflow.

— Description of Services:

Detailed design (alignment and portals) and on-site technical assistance during construction.

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