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Brisbane Airport Link /...
Requirement
tunnelling project
| Employment | Street | |
|---|---|---|
| Geology | Primarily Tingalpa/Aspley Formation and Brisbane Tuff | |
| Tunnel Length | 4,844 m | |
| Diameter | 12,450 mm |
Solution
machine data
| Machine Type | EPB Shield | |
|---|---|---|
| Support Techniques | Segmental Lining | |
| Cutterhead Power | 4,900 kW | |
| Torque | 29,055 kNm |
Brisane, Australia, is investing big time in developing the capacities of its suburban highways. By building a tunnel network linking the city’s main growth areas, the goal is to reduce congestion on traffic routes above ground. The “Airport Link East-West Tunnel” should shorten the drive between the city and airport to nine minutes for 95,000 vehicles a day.
Two Herrenknecht S-375 and S-376 double shields known as Florence and Matilda, each with a diameter of 12,340 mm, had tunnelled the Clem Jones Tunnel under the Brisbane River by May 2009. The Airport Link is an extension of this tunnel project. The S-512 and S-514 Earth Pressure Balance Shields, each with a diameter of 12.45 meters, are somewhat larger than the Clem Jones twins making them the largest machines to have tunnelled in Australia to date. Each shield will construct a road tunnel of almost 2.5 kilometers in length. The planned boring time for both machines is July and August 2010. Apart from the two XXL machines, the offer package also includes products from H+E Logistik (conveyor system for transporting excavated material), Herrenknecht Formwork (segment moulds) and VMT (monitoring and navigation). This major project is to be completed by 2012.
