Port of Miami Tunnel
GCG were engaged as a specialist sub-consultant to provide an independent interpretation of the ground conditions and advise on the bored tunnel construction methodology. GCG performed a holistic interpretation of the ground investigations to confirm the contractor’s ground model and in particular the characteristics of a highly porous, variably cemented coralline limestone layer located at a critical section of the tunnel alignment.
GCG also advised on soil conditioning treatments for EPB tunnelling on the project. This involved designing and performing a series of laboratory tests to assess the feasibility of conditioning the different materials to be encountered for successful EPB tunnelling and informed the selection of appropriate tunnelling methods for the ground encountered at different sections along the alignment. GCG were also involved in field monitoring of the TBM spoil properties and the machine operations throughout the tunnel construction.
References
Merritt, A., Jefferis, S., Storry, R. & Brais, L. (2013). Soil conditioning laboratory trials for the Port of Miami Tunnel, Florida, USA. World Tunnel Congress 2013 Geneva, Underground – the way to the future! G. Anagnostou & H. Ehrbar (eds).
Storry, R. B., Pina, R. M., Hochart, A. & Hight, D. W. (2013). Ground investigation challenges at the Port of Miami Tunnel Project, Miami, Florida, USA. Rapid Excavation and Tunneling Conference & Exhibit 2013, Washington DC
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