two parallel-air injection tunnels
ACCIONA's project consists of two parallel-air injection tunnels 4,375 m and 4,320 m long respectively, which form part of a group of five ventilation tunnels that will serve the Chuquicamata underground mine.
The tunnels, excavated by drilling and blasting, will have a section 10.74 m wide and 8.00 m high, with slopes of -14.47% and -14.79% respectively. Perpendicular to them, and to the three future injection tunnels, three galleries 7.75 m wide and 5.6 m high will be built, which will connect all of these tunnels.
- Location: Chuquicamata, Chile
- Contract type: Construction and operation
- Infrastructure: Tunnel 1 will be 4,375 m long and Tunnel 2 will be 4,320 m long. The tunnels will be joined by three 3 connection passages
- Year of project completion: 2060