TBM FACTS

Central Leader - - NEWS -

The cut­ting head and shield at the front are as high as a four­storey build­ing

The heav­i­est of the ma­chine’s parts will be the 260 tonne main drive for the cut­ting head, while the largest will be the it’s 8.5m di­am­e­ter main bear­ing

Re-assem­bly will take a team of 30 ap­prox­i­mately three months to com­plete and will be over­seen by mem­bers of the Well-Con­nected Al­liance team who spent sev­eral months in China in­volved in the man­u­fac­ture and assem­bly of the ma­chine along­side Ger­man man­u­fac­turer Her­renknecht

The ma­chine is 87m long, al­most the length of a rugby field

It com­prises a 14.4 di­am­e­ter ro­tat­ing cut­ting head at­tached to the front of a 12-me­tre long shield, fol­lowed by three back-up cars, or gantries, that house all the equip­ment needed to op­er­ate it, re­move ex­ca­vated ma­te­rial and put in place the pre­cast con­crete rings that will line the two tun­nels.

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