PIPEJACKING
Akkerman TBM’s
Akkerman TBM’s are hydraulic machine which have been established world
wide since the early 1960’s. B&W purchased their first TBM in year 2000 and
have expanded our fleet every since.
Today B&W Tunnelling own a number of Akkerman TBM’s to suit pipe
sizes 1200mm, 1500mm, 1800mm and 2000mm diameters. Intermediate
sizes can be obtained by using a skin up kit.
All TBM’s can be fitted with several types of heads to suit differing
ground conditions.
| Muck head | - | used in clay, silt, sand and gravel |
| Carbide head | - | used in weak to medium strength rock |
| Closed head | - | used for boring unstable soils. It’s hydraulic doors prevent ground loss whilst excavating the face. |
Earth Pressure Balance ( EPB )
Recently B&W have procured two EPB machine 1800mm and 1500mm
diameters from Tunnel Engineering Services. Earth Pressure Balance machines are used where the ground conditions are wet and unstable, the ground being excavated is treated with foams at the cutting head and the rate of excavation is contained through the screw auger system.
Both EPB machine can be fitted with rock heads and used in open face mode
to cut rock with strengths up to 250Mpa.
