INFRASTRUCTURE

Second HS2 TBM gets ready to start digging under Birmingham

A team of 90 specialist engineers have completed the assembly of HS2’s giant tunnel boring machine (TBM) which will start digging the second bore of the 3.5-mile Bromford Tunnel into Birmingham next year.

 The 125t cutterhead for HS2’s latest TBM being moved into place

The 125t cutterhead for HS2’s latest TBM being moved into place

In an assembly operation to move sections of the machine into a 12m deep launch pit, two 600t cranes lifted the 125t cutterhead into place at the front of the 125m long machine in the pit bottom. The...

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