- ACCIONA
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- Construction
- Railways and Tunnels
- Bologna Tunnels
The project comprises two 6.1-km tunnels for which two Earth Pressure Balance tunnel boring machines of 9.4-m diameter were used. The excavation of the tunnels in an intensely urbanized context and the heterogeneous ground conditions required a particular methodology in order to minimize the effect on the existing structures and facilities on the surface.
This project featured the world’s first experiment with earth-consolidating injections and compensation with guided boring along a curved line. Other innovations included metal rings with doors for connecting galleries, designed by ACCIONA.
ACCIONA was the lead partner of the Transcity Joint Venture, for the design, construction, operation and 10 year maintenance of the $1.5 billion Legacy Way project, in Brisbane, Queensland.
ACCIONA is the Principal Design and Construct JV partner of the ALTRAC consortium, awarded with the contract to design and construct the $2.1 billion Sydney CBD South East Light Rail.
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