Gotthard Base Tunnel North
Portal wall/ rockfall protection
Over a period of several years, construction of the Erstfeld section of the Gotthard Base Tunnel from Erstfeld to Amsteg involved the execution of works directly below the rockface forming the bored tunnel portal. All supplies for the two drives passed through this area.
To ensure the safety of all subsequent works, the rockface above the portal was cleaned, rockfall mesh installed, and profiling and stabilization works performed above ground level for the precut.
The excavation works were then carried out in stages, in conjunction with the necessary rock removal and stabilization works. The rockfaces were secured by mesh, anchors and shotcrete.
Project period: 2003 – 2006
Services: Project management for Erstfeld section (as consortium member), plans for public display, main design, tendering procedure, production information, site supervision
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