Maddalena survey tunnel

12/09/2013

Assembly of the TBM is underway on the site of La Maddalena in Val di Susa, Italy. Excavation of the first 200 m of the 7.5 km-long survey tunnel of La Maddalena in Chiomonte started at end-2012 using a mechanical shovel and hydraulic rock breaker. The remaining 7,300 m will be driven by the TBM, which is nearly 240 m-long and has a 6.3 m-diameter. Click here for some photos, here, fr/11 and it/80 for tunnelbuilder archive. Visit www.ltf-sas.com. 37/13.