Overcoming the complex geometry and geology during design and construction of the Rozelle Interchange tunnel network

THURSDAY 1 AUGUST – REGISTRATION LINK NOW AVAILABLE!

Rozelle Interchange was the final stage (Stage 3b) of the WestConnex project. As stated in the project title, ‘Interchange’, this project linked the M4 East and M4-M8 Link projects with the future Western Harbour Tunnel project. To achieve these connections and minimise surface impacts, complex road and underground ventilation alignments were needed. This presentation covers design and construction challenges to overcome the complex road alignment (including 50 tunnel over tunnel crossovers) and equally complex geology.

Timings

5:30 – 6:00 – Networking and snacks

6:00 – 7:00 – Presentation and Q&A

7:00 – 8:00 – Networking

Learning outcomes

• Understand the Rozelle Interchange Tunnel.
• Learn how complex geology coupled with complex road geometry, including 4 levels of tunnels was safely constructed.

Speakers

Beatriz Estrada
Principal, PSM

Beatriz is a Principal Engineering Geologist at PSM. She has worked as part of the design and construction teams of numerous tunnel projects. She has been the technical lead for the development of the geotechnical models for multiple tunnel projects in Sydney including Rozelle Interchange, Sydney Metro City and Southwest and Western Harbour Tunnel, Southern Tunnel Works.

Mark Trim
Principal Tunnel Engineer, Delve Underground

Mark is the Underground and Tunnels Practice Lead for Delve Underground’s Australian and New Zealand Region. He has 26 years of experience working as a design engineer and design manager specializing in permanent and temporary underground structures. He has in-depth knowledge of empirical and numerical modelling methods and has designed tunnels using SEM, tunnel boring machines and cut-and-cover excavation techniques.