Meeting

50th Rankine Lecture: Stiffness at Small Strain- Research and Practice

The rapid development of computing power and of numerical modelling software over the past forty years has made sophisticated analysis of geotechnical problems accessible to most practising engineers. Typically computer packages now offer a wide range of constitutive models, which the design engineer needs to choose between, and then obtain parameters for. For those structures More Information…

Young Geotechnical Professional’s Night

Ana Heitor: Characterisation of Compacted Soil Using Shear Wave Velocity Field compaction testing is widely undertaken using nuclear density meters. Due to its localized nature however, the method is limited in assessment over larger depths and wider surface areas. Only a few studies have evaluated compacted soil behaviour under unsaturated conditions using alternative non-destructive testing, namely More Information…

Next Generation of Unsealed Roads

Low volume rural roads are typically unsealed roads and numerous Australian and international studies have been carried out to improve their durability and reduce dust. New products and equipment have been produced and tested, and unfortunately many of these new products are typical promoted by the so called ‘snake oil’ salesman. The goal of the More Information…

Concepts & Parameters Related to Ground Improvement Illustrated by Case Histories

The International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) Technical Committee on Ground Improvement, has proposed a classification system of ground improvement techniques according to the general nature of the soil, (frictional or cohesive) and the inclusion or not of added material (http://www.bbri.be/go/tc17). This classification system has been detailed in the state of the More Information…

A Practical Guide to Abandoned Mine Subsidence Assessment and Mitigation

Mine subsidence can take the form of sinkholes or troughs depending on mining and geologic conditions. Examples of the geology, mining, and subsidence features encountered in core and on the surface from US Bituminous Coal fields, particularly in the widely mined Pittsburgh Coal Seam; the Anthracite Coal field of north-eastern Pennsylvania; and the Sydney Basin, More Information…

The NSW Research Award: Advanced research in Geotechnical Engineering

Ali Ghandeharioon: Analytical and Numerical Studying of Disturbance and Pore Pressure in Soft Cohesive Soils Associated with the Installation of Mandrel-driven Prefabricated Vertical Drains This research investigates the installation of mandrel-driven PVDs and the associated disturbance in cohesive soils using a novel elliptical cavity expansion theory validated by laboratory experiments and numerical modelling. The pattern of More Information…

E.H. Davis Memorial Lecture: Recent Advances in the Application of Vertical Drains and Vacuum Preloading in Soft Soil Stabilization

Over the past 15 years, Prof. Buddhima Indraratna and his co-workers have developed numerous experimental, analytical and numerical approaches that simulate the mechanics of prefabricated vertical drains (PVD) and vacuum preloading including both two-dimensional and three-dimensional analyses and more comprehensive design methods. This lecture presents an overview of the theoretical and practical developments and salient More Information…

The 2010 Poulos Lecture : Modelling of Erosion

Following the discovery of sinkholes in the WAC Bennett Dam, British Columbia, in 1996, investigations showed that there had apparently been movement of fine material out of the core of the dam. The internal erosion (suffusion) is caused by continuing slow seepage but the concern is for the long term mechanical consequences. In order to More Information…

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 Information…

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 Information…

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 Information…

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 Information…

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 Information…

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 Information…

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 Information…