1997 Meetings

Life on a Commune

Between the middle of 1995 and the middle of 1996, approximately 300 000 m3 of sediment was dredged from the Patawalonga Basin. The sediment was deposited in ponds along Tapleys Hill Road and the water drained from it. In July 1996 accelerated drainage measures were instituted which allowed the material to be removed from the …more

Landslide Risk Assessment

Landslide hazard and risk assessments have been carried out by private practitioners and public bodies for many years. Recently there have been attempts to set up a more formal framework of risk assessment and management. Alan will explain the principles of landslide risk assessment and some of the common terms. He will illustrate the principles …more

Adelaide AirportRunway Extension

This project involved the diversion of Tapley’s Hill Rd and the extension of the main runway of Adelaide airport to allow fully loaded 747 jets to take off and land. Discussed were: the site investigation techniques used and the test results obtained with particular emphasis on the very soft soils encountered in the bed of …more

Art Gallery of SA – Deep Basement Construction

The presentation will cover the construction of the recently completed $26 million extensions to the Art Gallery of South Australia. Particular emphasis will be on the construction of the 10 m deep basement as redesigned to accommodate “top down” construction and the locally developed interlocking bored pile retaining wall technique. The key features to be …more

Melbourne Crown Casino – Geotechnical Issues

The Melbourne Crown Casino, billed as one of the largest in the world, has been built on about a 6 hectare site on the south bank of the Yarra River in Melbourne. The $1.6 billion project includes 11 hectares of underground car parking, on two levels, theatres, gaming halls, restaurants and a 40 storey hotel. …more

Annual Half-Day Seminar – Environmental Geomechanics

Speakers included: Roger Parker, Linton Johnston, Clive Jenkins, Michael Cannell, Alex Eadie, Alan Ockenden, James Begg, Dr Peter Mitchell Geoenvironmental practice in Australia Urban stormwater contaminants Heavy metals in the sediments of constructed wetlands: safely locked up or mobile and toxic? Instrumentation for environmental geomechanics Environmental auditing of contaminated land in SA Managing urban catchments …more

Blanchetown Bridge Replacement – Geotechnical Investigation

Site work has started for the construction of a new bridge at Blanchetown. This bridge will be one of the biggest built in the state in recent times. A seismic study to provide information for the alignment of the new bridge was performed by Coffey Partners International. The geotechnical investigation for the new bridge was …more

Tailings Management at Olympic Dam – Current Practises and Future Options

Tailings management at Olympic Dam involves the monitoring and control of solid and liquid components of the tailings slurry. Tailings slurry is deposited in thin layers using a spigot system from the perimeter of each cell. The solids settle onto the tailings beach whilst the supernatant liquor is collected from the centre of each cell. …more

The Re-Use of Sediment Drained from the Patawalonga

Between the middle of 1995 and the middle of 1996, approximately 300 000 m3 of sediment was dredged from the Patawalonga Basin. The sediment was deposited in ponds along Tapleys Hill Road and the water drained from it. In July 1996 accelerated drainage measures were instituted which allowed the material to be removed from the …more