|
The Indau range of raise borers
consists of seven machine models for maximum shaft diameters
of 1.8 - 7 m in hard rock and 2.4 - 8.2 m in softer formations.
Raise lengths up to 1200 m.
The basic machine models are used for conventional raise boring,
piloting down and reaming up, to drill e.g. ventilation shafts
and ore passes in mines, water intake shafts and penstocks in
hydroelectric power schemes, ventilation shafts for road and
railway tunnels, rock passes for quarries, emergency exits from
tunnels and other underground spaces, and metro-escalator declines.
To satisfy customer requirements, the Raiser raise borers have
been tailored for specific applications, such as piloting up
- reaming down operation, downward box-drilling with pre-drilled
pilot hole, and horizontal drilling of water supply and sewage
tunnels.
|
| Raiser 250-H
drilling a ø 4.07 m / 88 m penstock at 45° angle for
a hydroelectric power scheme. Drilling time two weeks. |
|