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Disassembly of two tunnel boring machines (TBM), Australia

 

Overview:

ALE provided specialist heavy lifting and onsite transportation services to assist in the disassembly of the two tunnel boring machines (TBM) used to construct the Brisbane City Council’s Legacy Way tunnel, which is being constructed by Transcity Joint Venture in Brisbane, Queensland.

 

Services Required:

The TBMs located inside the Eastern portal of the Legacy Way project presented a unique challenge due to limited head room and access constraints resulting from their underground location.

The project scope included the design and manufacture of specialised bespoke lifting equipment, provision of engineered lifting and rigging studies. It also included supply of a 450t Hydraulic Lift System and 9 axle lines of SPT to lift pieces from the TBM and transport them to a storage yard on the surface.

With weights varying from 20t up to 261t, lifting and rigging drawings were provided for every component of the TBM. For certain lifts, rigging equipment was made to measure in order to limit the lifting height and allow for sufficient clearance. Several items had to be rotated, to match their final position onto the trailer. For the second TBM, cutterhead sections were placed on a skate system and moved due to limited space.

The two TBMs were dismantled in four months, with lifting operations carried out seven days a week during day and night shifts.

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