» Tunnel Boring Machine
Tunnel Boring Machine
The TUNNEL BORING MACHINE (TBH) as the name suggests
is used for digging tunnel under the ground We can provide five different
types of TBM as described below
Earth Pressure TBM(EPB)
The EPB technology is suited for digging tunnels in unstable ground such as
clay,silt,sand and gravel
The slurry TBM is used for tunnel-boring in highly permeable unstable
terrain,or under civilian structures sensitive to ground disturbances.
This type of boring machine is suitable for driving in stable rock and is
used for the excavation of traffic tunnels(road and rail),supply
tunnels(water,gas and electricity),pressure water utility tunnels for
hydroelectric plants,tunnels for cable cars high in the mountains,tunnels
for geological investigations and other special applications.
The machine is a so-called single shield machine,the function of which is
only boring and installation of the tunnel lining in consecutive
steps,i.e.,one at a time.
This machine type consists of a shield construction in two parts, in which
the two shield sections are connected together by hydraulic cylinders. The
rear shield section is fitted with a gripper construction, by means of which
this shield can be braced against the bored tunnel wall.
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