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Image: HS2
Image: HS2

Bespoke gantry system for HS2 TBMs removal

Dutch heavy lifting company Mammoet worked with tunnel boring machine (TBM) manufacturer Herrenknecht and HS2 tunnels main contractor, Skanska Costain Strabag joint venture, to design and assemble a custom gantry system to lift four TBMs weighing almost 900 tonnes each.

This solution enabled the removal of each of the TBMs as a single piece and reduced dismantling operations within the shaft by bringing lift operations to the surface, mitigating risk. The total works needed four 24-hour lift and carry operations.

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