Australia

Cross River Rail – Tunnelling Under the Brisbane River and the City Centre

Credit/Quelle: Cross River Rail CRR

1 Project overview

Credit/Quelle: Cross River Rail CRR

2 Double Shield TBM „Else“ at the launching cavern in Woolloongabba

Credit/Quelle: Cross River Rail CRR

3 Geotechnical longitudinal section TBM tunnel

Credit/Quelle: Cross River Rail CRR

4 Access ramp to station box in Woolloongabba

Credit/Quelle: Cross River Rail CRR

5 Traversing structure
with TBM

Credit/Quelle: Cross River Rail CRR

6 Launching set-up: Stub tunnel and thrust frame

Credit/Quelle: Cross River Rail CRR

7 River crossing, longitudinal section

Credit/Quelle: Cross River Rail CRR

8 Emergency dewatering pump and maximum encountered water inflow at the front shield

Credit/Quelle: Cross River Rail CRR

Credit/Quelle:Cross River Rail CRR

9 Drill rig during FAT, mounted to the erector plate

Credit/Quelle:Cross River Rail CRR

Credit/Quelle: Cross River Rail CRR

10 Schematics of probe drilling at interface sections [2]

Credit/Quelle: Cross River Rail CRR

11 Albert Street cavern as-built level

Credit/Quelle: Cross River Rail CRR

12 Camera view on the partial excavation of the TBM

Credit/Quelle: Cross River Rail CRR

13 TBM 2 breaking into Roma Street, TBM 1 already in transition

Credit/Quelle: Cross River Rail CRR

14 Shield cradle and hydraulic skidding system

Credit/Quelle: Cross River Rail CRR

15 Backup-gantry rail-legs

Credit/Quelle: Cross River Rail CRR

16 Greenstone area estimate by F. Anghetti based on ground encountered with the TBM, borehole data and [3].
On the right: tunnel face with greenstone and worn cutting discs from this tunnel section

Credit/Quelle: Cross River Rail CRR

17 Shallow rock cover and residual soil prediction at Northern Portal approach

Credit/Quelle: Cross River Rail CRR

18 Geotechnical longitudinal section of mined tunnels

Credit/Quelle: Cross River Rail CRR

19 Formwork for mined tunnel in-situ concrete

Credit/Quelle: Cross River Rail CRR

Cross River Rail (CRR) is a new 10.2 km rail line including 5.9 km of twin tunnels running under the Brisbane River and the Central Business District (CBD) of Brisbane, Australia. The new line will unlock a bottleneck at the core of the rail network and will transform travelling across the whole of South East Queensland. The project includes four new underground stations at Boggo Road, Woolloongabba, Albert Street and Roma Street as well as new above-ground stations at the RNA Showgrounds and Dutton Park.

CRR’s Tunnels, Stations and Development (TSD) package scope includes design and construction of the twin tunnels from Boggo Road Station in the south to the Northern Portal and delivery of the four underground stations.

Two Double Shield TBMs excavated 4 km of tunnels to the north from the Woolloongabba underground station worksite, travelling underneath the river and the CBD. Towards the south, two road headers excavated the mined tunnels between the Woolloongabba and Boggo Road worksites.

Delivery of the project in a densely developed area of Brisbane city, including excavation underneath...