The World's Second Deepest Tunnel
Tackles Volcanic Rock Below the Andes
- The machine excavated below 2,000 m (6,500 ft) cover through the Andes
- Severe squeezing ground and rock bursting were surmounted using McNally Ground Support System™
Olmos Trans-Andean Tunnel
Location
Northwest Peru
Scope of Supply
5.3 m (17.4 ft) Main Beam TBM
Tunnel Length
13.5 km (8.4 mi)
Ground Condition
Schist, Argillaceous Rock, Quartz Mica Schist, Quartz Porphyry, Andesite, Tuff, Pyroclastic Breccias