T.B.M. is the abbrevation of Tunnel Boring Machine and his definition is equipment capable of digging tunnels to complete section.
To restrict a bit this definition we can be divided TBM in several classifications:
Full face support and
open shield TBM:
Full face support TBM: TBM able to control the pressure in the front during the excavation. This type of machines can work under
cities and cross road, railways, etc.
Open shields: For stabilize grounds and without any civil construction in the surface.
Depending on the tunnel support:
Segment lining. Can be use in all type of ground and with all type of TBM.
Metal roof truss. Used only in rock ground and with gripper TBM.
Pipe jacking. For tunnels with diameter smaller than 3 m.
Depending on the extraction method:
Extraction with endless screw conveyor: EPB Shield.
Extraction with pumps: Hidroshield.
Extraction with conveyor belt: Rock TBM, double shield and open shields.
Eurohinca has the equipments and the experience to build tunnels with all the TBM types, tunnels supports and all diferent diameters.
