The Dame Whina Cooper TBM has been launched from 110 metres within a #linkalliance mined tunnel at Mt Eden on its way to midtown via the Karangahape station.
This is the second and final tunnel for the exciting new City Rail Link.
The TBM will reach midtown around Mayoral Drive sometime in spring. It can travel up to 32 metres a day. Thanks to everyone for getting us to this exciting day.
You can also see here the screw conveyor turning and catching the first spoil.
Every day, the machine will remove about 1500 tonnes of spoil from the tunnels. The TBM is not just excavating the tunnel and removing tunnel spoil. It is also installing concrete segments to line the tunnel. The tunnels will all up contain about 64,200 cubic metres of concrete- a lot more than your driveway!
