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List of products by author: W. Okada
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Design of Mined Cross Passages for Waterview Project Auckland (NZ): Comparison between Predicted vs Actual Performance
Abstract: The Waterview Connection is the NZ Transport Agency’s largest and most challenging road project to date. The world’s 10th largest Earth Pressure Balance Tunnel Boring Machine was used to construct the 2.4 km long twin tunnels of 13.1 m internal diameter. The tunnels are connected by sixteen mined cross passages, with an internal span of 5.2 m and 6.0 m height. This paper describes the lessons...
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Waterview Connection Project Cross Passage Tunnels: Safety in Design and Construction
Abstract: The Waterview Connection is the final 5 km link to complete the NZ Transport Agency’s Western Ring Route motorway around Auckland. The Waterview Connection is the largest and most complex roading infrastructure project ever undertaken in New Zealand. A 14.4m outside diameter EPB TBM was used to complete the twin 2.4 km long tunnel, located at the heart of the scheme. The Well-Connected Alliance...
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