TBM extraction from Queen Street shaft

TBM S-608 by Contract 921 reached the Queen Street reception shaft in September. After about a month of preparation, the TBM is finally ready to be lifted out of the shaft and transported back to the launch shaft at Rochor station to bore the Expo bound tunnel. The process involves lots of machinery on a tight footprint. Just take a look!

A notice posted at the Rochor centre blocks

Part of the crane being used for lowering the TBM at the launch shaft
being delivered to the Rochor station site yesterday (24 Oct 2013)

The tail skin shield at the Queen Street Shaft

The cutterhead at the Queen Street shaft

The front shield at the Queen Street shaft

Overview of the proximity of the shaft to the HDB block