This event is a joint presentation by the ATS and the Australian Geomechanics Society. Click through the link on the right to register.

Overview

The increased demand to future-proof tunnel projects with respect to long term traffic predictions has led to the proposal of some exceptionally large span tunnels in recent road projects in Australia. For example, some of the current projects have main line tunnels with continuous excavated spans up to 22 m, besides other enlarged sections and Y-junction caverns that approach 34 m in span.  These projects do not come without their challenges particularly when they are also combined with a very tight construction programme. David and Mark will present some of their experiences in recent projects in Australia and how some of these challenges were tackled via innovative design solutions. The presenters will discuss developments around design delivery strategies, spaceproofing, excavation sequences, ground support for large tunnels, shotcrete design and its associated quality control challenges, and more.

Speakers

David Oliveria | Jabobs – Technical Director

Dr David Oliveira is a Technical Director for Asia Pacific and Global Subject Matter Expert in Hard Rock Tunnelling at Jacobs Engineering Group. He has over 20 years in the civil, geotechnical and tunnelling industry and has been involved on a broad range of projects varying from complex open pit and deep and highly stressed underground mines to major infrastructure projects in a variety of ground conditions and challenging urban environments.

Mark Sheffield | Aurecon – Technical Director

Mark is a Technical Director for the Infrastructure Group at Aurecon. He has over 30 years in tunnelling and heavy civil engineering. He has been involved with major underground projects around the world from feasibility and concept design through to implementation and construction systems in a variety of ground conditions and challenging urban environments.