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AS3798 – 2007 Guidelines on earthworks for commercial and residential developments – Recent revision
The paper presents an outline of the recent revisions to AS 3798 β Guidelines on earthworks for commercial and residential developments.
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Applying Innovative Geophysical Methods To Assist Identification And Repair Of Road Collapses
Seismic tomographic imaging (STI) is applied to assess the extent of a road collapse that occurred in a major arterial road through the north-western suburbs of Melbourne. The road collapse was associated with a 4 m diameter sewer tunnel being driven through mixed soil conditions under compressed air at a depth to the crown of about 18 m. Emergency grouting was conducted from tunnel level and the road surface after the road surface had subsided over 400 mm. Over 130 mΒ³ of grout was introduced to stabilise the area.
Downhole seismic testing and STI were used to assess the disturbed ground which extended over a zone approximately 4 m wide and up to 10 m deep. Further imaging after the initial grouting works indicated that significant voiding still remained and a further 20mΒ³ of grout was introduced through surface boreholes. Subsequent imaging clearly showed a significant increase in seismic velocity within the disturbed zone. No further movement has occurred in the collapse area over the following years.
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Settlement Of Soft Marine Sediments At Sydney Airport
The paper reviews the historical development of the western area of Sydney Airportand particularly the early soil investigations to determine the deformation characteristics of the soft clay which underlies the aprons and terminal. It also looks briefly at the settlement of the aprons over a 20 year period to ascertain whether the movements which are being experienced are fundamentally due to consolidation or creep. Finally, it presents some selected data on settlement and creep coefficients derived from recent testing.
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Slope Stability Forum
Various
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Introducing Geotechnical Design to Shallow Geothermal Systems
2012 John Jaeger Lecture
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Introducing Geotechnical Design to Shallow Geothermal Systems
2012 John Jaeger Lecture
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Introducing Geotechnical Design to Shallow Geothermal Systems
2012 John Jaeger Lecture