Meeting

Stress-Deformation Behaviour of an Embankment on Boston Blue Clay

An 11m high embankment was thoroughly instrumented with piezometers, settlement rods and inclinometers to measure the behaviour of the underlying 40m thick deposit of Boston Blue Clay during staged loading and four years of subsequent consolidation. estimates of the engineering properties of the clay were made based on in-situ testing and laboratory test programs. Finite More Information…

Failures, Factors of Safety and Soil Strength

In routine geotechnical design of foundations, slopes and retaining walls a factor of safety is applied to ultimate collapse loads. But very different factors of safety are used for different structures. Also soil has several different strengths; peak, constant volume (or critical state) and residual. Moreover, it is not always clear what constitutes failure of More Information…

EUROCODE 7 Part 3 : Field Testing – Methods & Interpretation

Professor Drozd is a long serving member on this Eurocode committee. Professor Karel Drozd presented the approach of Eurocode 7 to different methods of field testing and analysis of the results. Special reference was made to the limit states nature of this code. The presentation was illustrated by examples from his personal experiences through using More Information…

Evolution of strain localisation in granular materials

It is experimentally evident that large monotonic shearing of a granular material causes a concentra-tion of the shear deformation into narrow zones along walls or inside of the granular body. Location, orientation and the evolution of strain localisation is determined by the mechanical properties of the granular material and the boundary conditions of the described More Information…

Geotechnical Analysis

The design of any geotechnical structure of significance requires the quantification of safety and in some cases movements. To achieve this the designer must perform calculations using some form of analysis. At present there are several forms of analysis available, all of which involve simplifications and approximations. This lecture will begin by briefly comparing these More Information…

Tomago Mineral Sands Mining Project

This project was recently acknowledged by the Association of Consulting Engineers Australia (ACEA) in their Engineering Excellence Awards for 1999. For the past 20 years Douglas Partners have been advisors the water authority (initially HWC, and subsequently DLWC) in monitoring the effects of mineral sands mining on the Tomago Sandbeds aquifer. The Sandbeds are also More Information…

Shear Strength and Stiffness of Silty Sand

The stiffness and shear strength of clean sands have been studied extensively. However, natural sands generally contain significant amounts of silt and/or clay. The mechanical response of such soils is different from that of clean sands. This lecture addresses the effects of non-plastic fines on the small-strain stiffness and shear strength of sands. A series More Information…

The mysteries of blast induced ground vibrations

There are often anomalies between the expected level and the actual monitored level of blast induced ground vibrations. The main theme of this talk highlights the effect of the degree of confinement of an explosive charge on the magnitude of the shock wave transmitted through the ground. An analysis of the energy distribution of an More Information…

Assessment of regional landslide hazard

The process of assessment of the risk of landsliding involves consideration of the likelihood of a landslide event occurring and also the consequence of that event. A primary requirement is an estimation of the level of hazard that exists i.e. whether a landslide could occur, and if so, its probable frequency. This estimation is commonly More Information…

Geotechnical Anchoring Systems and GEWI Piles

The lecturer will first present a summary of the geotechnical anchoring systems offered by DYWIDAG-Systems International using bar and strand. The focus will then be on GEWI-Piles: a minipile system that uses steel Threadbars grouted in small drilled holes. The grout body encasing the Threadbar provides corrosion protection, enables load transfer into the rock or More Information…

Geotechnical Aspects of Kooragang Coal Terminal Stage 3 Expansion

The Stage 3 Expansion of the Kooragang Coal Terminal is a $345 million project, which will boost the coal exporting capacity of the Port of Newcastle from 77 million to 89 million tonnes per year. Port Waratah Coal Services appointed Bechtel Australia in July 1999 to design and construct the expansion. The key construction elements More Information…

Numerical Models of Tunnels and Tunnelling

Dr Charles Augarde is a Lecturer in Civil Engineering at the University of Durham. He obtained his DPhil at Oxford University, where he lectured until he moved to Durham. Dr Augarde has expertise in a number of areas, for example: 3D finite element modelling of geotechnical problems (such as tunnelling) Soil-structure interaction Behaviour of masonry More Information…

Aspects of Development of Sydney Airport

The first significant development at Sydney Airport took place immediately after the Second World War when Cooks River was diverted to enable construction of the North-South and East-West Runways. This work was concluded in the late 1950’s by which time the present airport layout was essentially established. Since the early construction work at the Airport, More Information…

Mine Void Remediation for the West Charlestown Bypass, Newcastle

The earthworks associated with the West Charlestown Bypass in Newcastle are currently nearing completion. The project comprises 6km of dual carriageway motorway in an urban environment, extending from the Pacific Highway at Windale in the South to Charlestown Road, Kotara South, in the north. A 1km length of the Bypass, at the northern extent of More Information…

Maryland reactive Soils Field Site

Dr Stephen Fityus has a background in engineering geology and geotechnical engineering, from undergraduate studies in engineering and geology at the University of Newcastle. He worked for 4 years, mostly in the local geotechnical industry, before returning to the University of Newcastle to undertake his PhD on the topic of unsaturated soils, in which reactive More Information…

Seminars on Landslide Risk Management

In March 2000, the paper “Landslide Risk Management Concepts and Guidelines” was published in the journal Australian Geomechanics. The paper provides a benchmark for the terminology and methodology of Landslide Risk Management. The Coroner’s report on the 1997 Thredbo landslide recommended adoption of the paper. Emergency Management Australian (EMA) have identified the AGS 2000 Guidelines More Information…