2019 SA-NT Symposium

Tunnelling under Adelaide

Michael R. King and Dr Oskar Sigl

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The South Australian-Northern Territories Chapter of the Australian Geomechanics Society (AGS) and the Australian Tunnelling Society (ATS) are pleased to announce the 2019 AGS Symposium titled “Tunnelling under Adelaide” which is to be held on Monday 28th October 2019.

The symposium forms part of the continuing programme of events organised by the SA-NT Chapter of the AGS and aims to provide the engineering profession with a comprehensive introduction to the geotechnical aspects of tunnelling in soil in urban areas, including best practice techniques and recent developments.

Overview of the 2019 Symposium

South Australia has seen significant investment in transport infrastructure in recent years. The development of a dedicated non- stop North-South Corridor for Adelaide is a direct result of a strategic objective to reduce Adelaide’s urban road congestion. The North-South Corridor is one of Adelaide’s most important transport corridors and
is the major route for north and south bound traffic including freight vehicles running between Gawler and Old Noarlunga, a distance
of some 78 km. Many of the associated projects involve complex geotechnical challenges.

The South Australian Government is currently considering the viability of tunnelling options for the remaining sections of the strategic North-South Corridor between River Torrens and Darlington. Design and construction of the remaining sections will be the biggest single infrastructure project in South Australia’s history.

This symposium will present overviews of current design practice, state of-the-art practices, novel technologies and innovative solutions, and case studies demonstrating applications of advanced techniques and cost-effective solutions in the design and construction of TBM tunnels in clay, with a focus on the geotechnical challenges associated with the completion of the North-South Corridor between the River Torrens and Darlington. The symposium will bring together professional engineers, researchers, specialist contractors, regulators, educators and students to share and discuss their experiences on the topic of the design and construction of TBM tunnels and their associated challenges and opportunities.

Topics

Planning and Investigation

• Procurement models
• Risk management
• The role of ground investigation and Geotechnical Baseline Reports
• Ground conditions in Adelaide including geotechnical and hydrogeological hazards

Geotechnical Design

• Management of ground movements impacts on existing infrastructure
• Groundwater control in high risk urban environments
• Instrumentation and monitoring
• Ground treatment

Excavation and Construction Methods

• Large diameter TBM selection, design and performance
• Sprayed concrete lining and membrane construction
• Cross passage construction
• Crossover structures
• Waterproofing of cross passages, shafts and caverns
• The role of tunnel engineers during construction and the use of the observational method

Case histories

• TBM tunnelling projects in Adelaide, London and Auckland will be presented

Sponsorship Opportunities

Information on sponsorship opportunities.

Call for abstracts

Information on abstract submissions.

Engineers Australia members participating in AGS technical sessions can record attendance on their personal CPD logs. Members should refer to Engineers Australia CPD policy for details on CPD types, requirements and auditing guidelines.