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AUSTRALIANGEOMECHANICSVOLUME 50: NO.4 DECEMBER 2015

JOURNAL AND NEWS OF THE AUSTRALIAN GEOMECHANICS SOCIETY

ISSN 0818-9110

Published by

The Australian Geomechanics Society, National Secretariat

PO Box 955, St Ives, NSW 2075

Cover Photo: Final excavation level, Western Ring Road Widening Project, Melbourne. Photo courtesy Lee and Ims.

© Australian Geomechanics Society. All rights reserved. Other than brief extracts, no part of this publication may be produced in any form without the written consent of the publisher. The Society encourages reproduction of its publications and consent is usually looked upon favourably. It is a requirement that full and complete acknowledgement be cited when referencing articles published in Australian Geomechanics.

The Australian Geomechanics Society is a technical society of Engineers Australia.

Responsibility for the content of this publication rests upon the authors and not on Engineers Australia nor the Australian Geomechanics Society. Data presented and conclusions developed by the authors are for information only and are not intended for use without independent substantiating investigation on the part of the potential user.

AUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015iv

CONTENTS

View from the Chair .......................................................................................................... viiiConference Calendar .......................................................................................................... ixAwards ................................................................................................................................ xIntroduction to Special Issue Selected papers from the 12th ANZ conference on Geomechanics, Wellington 2015 ...............1

Darren Paul

SELECTED PAPERS FROM ANZ2015

Development of Horizontal Soil Mixed Beams as a Shallow Ground Improvement Method Beneath Existing Houses .....................................................................3

R. Hunter, S. van Ballegooy, J. R. Leeves and T. Donnelly

Modelling the Performance of a Permeable Reactive Barrier utilised to Reduce the Risk of Acidic Groundwater in the Shoalhaven Floodplain ...............................................................13

U. Pathirage and B. Indraratna

Overview of The Role of Testing and Monitoring in the Verification of Driven Pile Foundations ...23J. P. Seidel

An evaluation of the tilt test for granular materials ...............................................................33S. G. Fityus, and J. V. Simmons

Flow category landslide susceptibility modelling of the Sydney Basin .................................43D. Palamakumbure, P. Flentje and D. Stirling

Correlation between PMT and CPT after Dynamic Compaction in Reclaimed Calcareous Sand ...51B. Hamidi, H. Nikraz and S. Varaksin

Effect of Suction History on the Small Strain Response of a Dynamically Compacted Soil ....61Ana Heitor, Buddhima Indraratna and Cholachat Rujikiatkamjorn

Performance of Sewer Pipes with Liner during Earthquakes ..................................................71C. Heyes, S. Ram, C Evans, H. Lambourne and R.P. Orense

Rock mesh application in highly fractured basalt rock cutting in Western Ring Road widening project Melbourne – a case study...........................................81

B. C. Lee and B. W. Ims

A partially drained model for soft soils under cyclic loading considering cyclic parameter degradation ..........................................................................89

Buddhima Indraratna, Jing Ni, Cholachat Rujikiatkamjorn and Rui Zhong

AUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015 v

Weathering Profiles of Bunya Phyllite in Southwest Brisbane - a Geotechnical Approach ......97E. A. G. Marques and D. J. Williams

Experimental Investigation of coal-fouled ballast stabilised with geogrid ............................105N. T. Ngo, C. Rujikiatkamjorn and B. Indraratna

The Significance of Raft Flexibility in Pile Group and Piled Raft Design ..............................113H. S. W. Chow and H. G. Poulos

Boundary Element Methods for the Simulation of Underground Construction .....................121C. Duenser, B. Lindner and G. Beer

A risk based assessment of the punch-through potential of jack-up barges ........................129Mark Skinner and Timothy Mote

Alternative design approach for soft clay improved by PVDs ..............................................137Cholachat Rujikiatkamjorn, Buddhima Indraratna and Darshana Perera

ISRM Report ....................................................................................................................145IAEG Report .....................................................................................................................147ISSMGE Report ...............................................................................................................149AGS Technical Society Representation ..............................................................................150Editorial Policy ................................................................................................................151

[All papers have been refereed in accordance with the full DETYA review process, unless stated otherwise]

SYDNEY FOR ICSMGE 2021!We are the lucky country.

The ancient geology that forms ourland is rich in the natural resources so

important to fuel the insatiable appetite of theindustrial world. Our geotechnical engineers are at the

forefront of technical challenges of extracting and transportingsuch large quantities of natural resources. Our academic institutions

are leading cutting edge geo-engineering research to nd solutions to respondto the new challenges spurred by the rapid pace of mining, oil and gas and associated

urban and civil infrastructure development.Support our bid to showcase our incredible country and

bring the biggest event of our profession to Sydney in 2021!

It's time to bring the biggest event of ourprofession to Australia. Show yoursupport for ICSMGE 2021 inSydney, Australia.

The Australian Geomechanics Society has a reputation for delivering world class technical events and has

announced its intention to bid to host the 20th International Conference of Soil Mechanics and Geotechnical

Engineering in Sydney. Along with our sister society in New Zealand, our region has the highest per capita

membership of any of the international societies but the International Conference has never been held in

Australia. With your support, we intend to change that in 2021 and host a conference that will live in the

memories of our profession for many years to come.

ICSMGE 2021SYDNEY

WWW.AUSTRALIANGEOMECHANICS.ORG

viiAUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

TITLE NAME ADDRESS FOR CORRESPONDENCE BuSINESS PhONE/MOBILE/EMAILMr Darren PAUL

ChairGolder Associates Pty LtdPO Box 6079HAWTHORN WEST VIC 3122

Tel: 03 8862 3743Mob: 0437 327 [email protected]

Dr Hugo ACOSTA-MARTINEZVice Chair / Treasurer

c/- AECOMGPO B59PERTH WA 6849


Mr Sam MACKENZIE Immediate Past Chair

Level 3 GHD Tower,24 Honeysuckle DriveNEWCASTLE NSW 2300


Prof. Stephen FITYUSNewcastle Elected Member

40 Russell RoadNEW LAMBTON NSW 2305


Prof. David AIREYSydney Elected Member

University of SydneySYDNEY NSW 2006


Mr Nick GLOVERTasmania Elected Member

c/- Hydro Tasmania4 Elizabeth StreetHOBART TAS 7000


Mr Vladimir LOPEZ SUAREZQueensland Elected Member

c/- Coffey Geotechnics47 Doggett StreetNEWSTEAD QLD 4006


Mr Chris COULSONVictoria Elected Member

Level 9, 8 Exhibition StreetMELBOURNE VIC 3000

Tel: 03 9653 8364Mob: 0409 523 360 [email protected]

Mr Colin DICKSONWestern Australia Elected Member

Cardno Geotech11 Harvest Terrace,WEST PERTH WA 6005

Mob: 0432 443 [email protected]

Mr John SLADESouth Australia & NT Elected Member

C/- Coffey GeotechnicsLevel 1, 33 Richmond RoadKESWICK SA 5035


Mr Mark EGGERSLiaison IAEG

c/- Pells Sullivan MeyninkG3 56 Delhi RoadNORTH RYDE NSW 2113


Dr Stuart READVice-President ISRM

NEW ZEALAND [email protected]

Dr Sevda DEHKHODAISRM Aust Rep

PO Box 685VICTORIA PARK WA 6979


Prof. M.B. (Mark) JAKSAVice-President ISSMGE

12 Paul StreetHECTORVILLE SA 5073


Mr Peter FENNELLWebmaster

28 Sea Scape DriveREADHEAD NSW 2290


Mr J P (Patrick) MACGREGOR Editor Australian Geomechanics

PO Box 7183MANNERING PARK NSW 2259

Tel: 02 4359 1023Mob: 0407 114 153 [email protected]

Mr Rob BARKEREA Civil College

Barker HarlePO Box 645YASS NSW 2582

Mob: 0414 584 [email protected]

Ms Tanya KOUZMINAssistant Editor Australian Geomechanics

PO Box 5172RINGWOOD VIC 3134


Mr Peter ROBINSONAGS Secretariat

PO Box 955ST IVES NSW 2075


AuSTRALIAN GEOMEChANICS SOCIETY NATIONAL COMMITTEE

SYDNEY FOR ICSMGE 2021!We are the lucky country.

The ancient geology that forms ourland is rich in the natural resources so

important to fuel the insatiable appetite of theindustrial world. Our geotechnical engineers are at the

forefront of technical challenges of extracting and transportingsuch large quantities of natural resources. Our academic institutions

are leading cutting edge geo-engineering research to nd solutions to respondto the new challenges spurred by the rapid pace of mining, oil and gas and associated

urban and civil infrastructure development.Support our bid to showcase our incredible country and

bring the biggest event of our profession to Sydney in 2021!

It's time to bring the biggest event of ourprofession to Australia. Show yoursupport for ICSMGE 2021 inSydney, Australia.

The Australian Geomechanics Society has a reputation for delivering world class technical events and has

announced its intention to bid to host the 20th International Conference of Soil Mechanics and Geotechnical

Engineering in Sydney. Along with our sister society in New Zealand, our region has the highest per capita

membership of any of the international societies but the International Conference has never been held in

Australia. With your support, we intend to change that in 2021 and host a conference that will live in the

memories of our profession for many years to come.

ICSMGE 2021SYDNEY

WWW.AUSTRALIANGEOMECHANICS.ORG

viii AUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

VIEw FROM ThE ChAIRDECEMBER 2015

NATIONAL COMMITTEE APPOINTMENTS FOR 2016At our annual general meeting in October, nominations were received for executive committee positions for 2016. I am pleased to announce the following appointments:

NATIONAL CHAIR FOR 2016 DR huGO ACOSTA-MARTINEZHugo is the current AGS treasurer and deputy chair. Hugo was born in Colombia where he obtained his Civil Engineering degree. Later he completed a Master of Engineering degree at the University of Tokyo and in 2005 moved to Australia where he completed a PhD at the University of Western Australia. Following completion of his PhD, Hugo joined the Ground Engineering and Tunnelling team of AECOM in Perth, where currently he holds an Associate Director role. Hugo’s involvement with the AGS started at a WA Chapter Committee during the last year of his PhD and he has maintained involvement in the AGS since. His main technical interest is in soft ground engineering.

TREASURER AND DEPUTY CHAIR PROFESSOR STEPhEN FITYuSStephen is currently the national committee member for the Newcastle Chapter. Dr Stephen Fityus began his career as a junior engineer at Coffeys. Thanks to combined undergraduate degrees, he can rightfully call himself a geotechnical engineer and an engineering geologist. He has been at the University of Newcastle since 1994, where he is now professor. He has been a member of the AGS since 1989 and part of the Newcastle Chapter committee since it became an autonomous chapter, including a period as its chair. He has been a National Committee member on several occasions during that period. His research areas include reactive clay soils, rockfall phenomena and the mechanics of mine wastes.

SECRETARY PETER ROBINSONPeter Robinson will continue as secretary of the AGS, a role he has held for the past 10 years.

The following people will continue in their current roles into 2016:

AUSTRALASIAN VICE CHAIR, ISSMGE .....PROFESSOR MARk JAkSAAUSTRALASIAN VICE CHAIR, IAEG .............................. MARk EGGERSAUSTRALIAN ISRM LIAISON..............................DR SEVDA DEhkODA

EDITOR AUSTRALIAN GEOMECHANICS .......... PATRICk MACGREGORASSISTANT EDITOR AUSTRALIAN GEOMECHANICS ....TANYA kOuZMINWEBMASTER ............................................................PETER FENNELLMEDIA ..................................................................... RIChARD hEATh

COuRSESOur new course, Unsaturated Soils for Practitioners will be running in Sydney from 31 March to 1 April 2016. Please see the flyer in this edition. The course to be presented by Professors Adrian Russell and Nasser Khalili and will aim to enhance the capabilities of practicing engineers when applying soil mechanics, analysing data and solving problems involving unsaturated soils.

We are excited to be introducing this new course and expanding our CPD offerings to our members and we look forward to a successful course.

Our Geology for Engineers course will be held in Adelaide in 2016. Announcements and flyers will be put out shortly.

REGISTRATION OF GROuND ENGINEERING PROFESSIONALSThe new National Engineering Register (NER) was launched in November. At this stage, there is no separate division within the register for ground engineering professionals. AGS has formed a group to work with the NER on providing a separate category within the register for ground engineering professionals.

We will provide regular updates as the working group progresses and feedback will be sought from members during this process.

ANZ 2019I am pleased to announce Mr. Michael Smith as the conference chair for the next Australia New Zealand conference on Geomechanics, to be held in Perth, 2019. Michael is the design team leader for projects, dams and dam safety at the Water Corporation of WA and has previous conference organising experience having helped to deliver two previous ANCOLD conferences in Perth.

The ANZ conference is our premier regional conference. The quality of the papers in the 2015 edition provides testament to that. We look forward to another successful ANZ conference in Perth, 2019.

ixAUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

ICSMGE 2021 uPDATEAGS was recently represented at three international conferences of the ISSMGE: the European conference in Edinburgh, Asian conference in Fukuoka and Pan-American conference in Buenos Aires. I would like to thank Mark Jaksa, Graham Scholey, Guillermo Narsilio and Hugo Acosta-Martinez for leading the promotion of our bid at these conferences. We were very successful in communicating to the global soil mechanics community our intention to bid and in extolling the benefits of Australia as the destination for the conference.

We are continually looking for interested people to help promote our bid. If you are heading to an international conference and are interested in helping to promote our bid, please contact our bid manager Graham Scholey, [email protected].

CLOSINGThis will be my final report to members as I move into the role of Immediate Past Chair. I have enjoyed my role as chair and believe we have been able to improve our services to members and strengthen the society over the last 2 years. I hope to continue to contribute to the AGS in the years to come and thank all our members for their support.

Darren Paul

National Chair - Australian Geomechanics Society

CONFERENCE CALENDARMAY 2016

10 – 12 7th International Symposium on In situ Rock Stress, Tampere, Finlandwww.rs2016.org

28 - 306th Asian-Pacific Symposium on Structural Reliability and its Applications, Tongji University, Shanghai, Chinawww.apssra2016.org

30 May – 3 June

19th Southeast Asian Geotechnical Conference, Young Geotechnical Engineers Conference, Petaling Jaya, Selangor, Malaysiaseags.ait.asia

31 May – 3 June

19th Southeast Asian Geotechnical Conference, Deep Excavation and Ground Improvement, Kuala Lumpur, Malaysiaseags.ait.asia

JuNE 2016

12 – 19 12th International Symposium on Landslides, Napoli, Italywww.isl2016.it

JuLY 2016

25 - 27 4th GeoChina International Conference 2016, Shandong, Chinageochina2016.geoconf.org

AuGuST 2016

1 - 66th International Conference on Recent Advances In Geotechnical Earthquake Engineering and Soil Dynamics, New Delhi, India6icragee.com/6IC

24 – 4 Sep 35th International Geological Congress, Cape Town, South Africawww.35igc.org

29 – 31EUROCK 2016 – ISRM European Regional Symposium, Ürgüp-Nevşehir, Turkeyeurock2016.org

29 – 1 Sep International Symposium - Challenges For Engineering Geology and Geotechnics after Natural Disasters, Sofia, Bulgaria

SEPTEMBER 2016

4 – 7 3rd International Conference on Transport Geotechnics, Guimaraes, PortugalCivil.uminho.pt/3rd-ICTG2016

5 – 95th International Conference on In-situ Testing and Geophysical Characterisation, Gold Coastwww.isc5.com.au

9 – 10 Embankment Prediction Symposium, Newcastle, Australiacgse.edu.au/eps2016

28 – 29

International Conference on Geo-mechanics, Geo-energy and Geo-resources, IC3G 2016, Monash University, Melbourne, Australiawww.ic3g.com

OCTOBER 2016

1 ARMS 9 – the 9th Asian Rock Mechanics Symposium, Bali, Indonesiaarms9.com

FEBRuARY 2017

12 – 17AfriRock, 1st African Regional Symposium – Rock Mechanics for Africa, Cape Town, South Africawww.saimm.co.za/saimm-events/upcoming-events

SEPTEMBER 2017

17 - 2219th International Conference on Soil Mechanics and Geotechnical Engineering, Seoul, South Koreawww.icsmge2017.org

x AUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

AwARDS

2015 ThOMAS TELFORD PREMIuM AwARDED TO ThREE AuSTRALIANS Professor Buddhima Indraratna and Dr Sanjay Nimbalkar from University of Wollongong (UOW) and Tim Neville from Australian Rail Track Corporation (ARTC) were honoured in October by the Institution of Civil Engineers, UK by awarding them 2015 Thomas Telford Premium – Ground Improvement, for their R&D efforts in track stabilization, with special reference to track design and health monitoring of a heavy haul track in Singleton near Newcastle, NSW. The field data interpretation and the innovative concepts of track stabilization were described in the publication: “Performance Assessment of Reinforced Ballasted Rail Track” (Ground Improvement Journal). In essence, the use of synthetic grids and resilient mats in tandem were demonstrated to be the most suitable and cost-effective option for minimising track degradation, reducing maintenance costs and for extending the life-cycle of track by several fold, where increased axle loads and higher speeds are planned for future heavy haul.

PROFESSOR BuDDhIMA INDRARATNA RECEIVES TOP INDIVIDuAL hONOuRSGeotechnical engineering and rail infrastructure expert Professor Buddhima Indraratna received the highest honour in Railway Awards at the combined Australasian Railway Association (ARA) and Railway Technical Society of Australasia (RTSA) Gala Dinner and Awards Night held at the NSW Parliament House. Professor Indraratna received this most prestigious honour within the Australasian Railway Community from the State Minister for Transport and Infrastructure, Hon. Andrew Constance.

The RTSA Individual Award is usually offered annually to a person who has made an outstanding contribution to the railway industry in the Asia-Pacific. RTSA, a joint Technical Society of Institution of Engineers Australia and Institution of Professional Engineers New Zealand, was formed in 1997 to further the interests of the railway industry at large and its individual proponents. Its main objective is to promote cooperation of academic, industrial, commercial and governmental organisations in relation to the practice and advancement of railway technology and management.

Professor Buddhima Indraratna receiving the RTSA Individual Award by Minister Hon. Andrew Constance (State Minister for Transport and Infrastructure) at the combined ARA and RTSA Rail Industry Gala Dinner and Awards Ceremony held on the 6th of October 2015 at the NSW Parliament House, Sydney.

From left to right: Dr Sanjay Nimbalkar (Research Fellow, UOW), Eng. David Balmforth (President, Institution of Civil Engineers UK) and Professor Buddhima Indraratna (Research Director, Centre for Geomechanics and Railway Engineering, UOW).

xiAUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

The award citation reiterated the recognition of his overall career achievement in providing an outstanding engineering and technical service to the wider railway community both nationally and internationally, originality and innovation of his research outcomes, the degree of autonomy in which he currently operates and the quality and appropriateness of leading-edge publications that have been presented in high quality journals and reputed international conferences.

Through this prestigious award, RTSA also acknowledged the impact he has made to the rail industry worldwide thereby influencing the technical standards and rail practices with respect to track design, as well as construction and maintenance through both fundamental and applied research. In particular, the citation clearly acknowledged his efforts which have revolutionised track infrastructure in terms of design innovations and extended longevity, enabling faster trains carrying heavier loads.

2015 RIChARD CAVAGNARO AwARD ANDREw BRADLEY (uNIVERSITY OF ADELAIDE)The South Australian Chapter of the Australian Geomechanics Society held their SA-NT Young Geotech presentation evening recently, showcasing both young industry professionals and university students alike.

Five young members took the opportunity to present their current projects, after which they fielded questions. By evenings end, an AGS panel gave valuable feedback to the presenters before announcing the recipient of the Richard Cavagnaro Award for 2015. For his outstanding work on ‘Modelling of Rolling Dynamic Compaction in LS-DYNA’, University of Adelaide PhD student, Andrew Bradley, proudly accepted the honour along with a share of cash prizes.

Andrew is part of a University of Adelaide post graduate group who are working hand in hand with South Australian compaction specialists, Broons. This valuable partnership is bringing together both the commercial and academic communities to accurately model the performance characteristics of the Broons ‘Square’ Impact Roller manufactured in Adelaide.

Used for deep soil compaction on many of the world’s largest civil engineering projects including the Palm Islands in Dubai, the locally made Broons’ ‘Square’ Impact Roller has been at the heart of Andrew’s PhD research.

With his post graduate counterparts, Andrew is generating accurate finite element modelling relating to the application of Rolling Dynamic Compaction. For many years the University of Adelaide and Broons engineering departments have benefited from real world testing providing a valuable exchange of ideas.

Energy absorbing rubber mats being placed on a railway bridge deck to minimize ballast breakage and reduce vibrations, the concept and analysis based on computer simulations and field data interpretations which earned Professor Indraratna, 2015 Thomas Telford Premium Award by the Institution of Civil Engineers, UK.

xii AUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

CORPORATE MEMBERSThe Australian Geomechanics Society gratefully acknowledges the contribution made by its Corporate Members.

FIRM ADDRESS PhONE

A S James Pty Ltd 15 Libbett Avenue CLAYTON SOUTH VIC 3169 (03) 9547 4811

AECOM Australia Pty Ltd Level 9, 8 Exhibition Street MELBOURNE VIC 3000 (03) 9653 1234

Anora Foundations Pty Ltd PO Box 3282 DARRA QLD 4076 (07 3279 7966

Arup Geotechnics Pty Ltd PO Box 76 MILLERS POINT NSW 2000 (02) 9320 9319

ATC Williams Pty Ltd PO Box 5286 MORDIALLOC VIC 3195 (03) 8587 0900

Aurecon Australia Pty Ltd 116 Military Road NEUTRAL BAY NSW 2089 (02) 9465 5599

Barker Harle PO Box 63 WARNERS BAY NSW 2282 (02) 4952 1666

Bauer Foundations Australia Pty Ltd 16/40 Blackwood Street MITCHELTON QLD (07) 3355 5466

Butler Partners Pty Ltd PO Box 2267 FORTITUDE VALLEY QLD 4006 (07) 3852 3800

Chadwick Geotechnics Pty Ltd 32 Fiveways Boulevard KEYSBOROUGH VIC 3173 (03) 8796 7900

Civiltest Pty Ltd PO Box 537 MORNINGTON VIC 3931

Coffey International Ltd Level 19 Tower B, Citadel Tower, 799 Pacific Highway CHATSWOOD NSW 2067 (02) 9406 1000

Concrib Pty Ltd PO Box 3234 DARRA QLD 4076 (07) 3375 1800

CPTS 16 Charles Place MANLY WEST QLD 4179 0407 375 977

Douglas Partners Pty Ltd PO Box 472 WEST RYDE NSW 1685 (02) 9809 0666

Durham Geo Slope Indicator Unit 1, 9 Cleaver Street WEST PERTH WA 6005 (08) 9227 0488

Geobrugg Australia Pty Ltd PO Box 2468 MALAGA WA 6944 (08) 9451 6557

Geofabrics Australia Pty Ltd 125 Wolston Road SUMMER PARK QLD 4074 0419 231 966

Geotech Pty Ltd 68 Springbank Street TULLAMARINE VIC 3043 (03) 9335 4233

Geotechnique Pty Ltd PO Box 880 PENRITH NSW 2751 (02) 4722 2700

GHD Geotechnics Locked Bag 2727 ST LEONARDS NSW 1590 (02) 9439 4033

Global Synthetics Pty Ltd 41 Sammut Street SMITHFIELD NSW 2061 (02) 9631 0744

Golder Associates Pty Ltd PO Box 1734 MILTON BC QLD 4064 (07) 3721 5400

Ground Environments Pty Ltd PO Box 6058 MACKAY QLD 4741 (07) 4952 5250

Hyder Consulting Pty Ltd Locked Bag 6503 NORTH SYDNEY NSW 2060 (02) 8907 8291

IDS Australasia Unit 5 3-5 Hinkler Court BERNDALE QLD 4500 (02) 9465 5599

Infra Tech PO Box 441 WILLETTON WA 6955 (08) 9337 5922

Intrax Consulting Engineers Pty Ltd 25 Bank Street SOUTH MELBOURNE VIC 3205 (03) 8371 0100

Jacobs Group Australia Pty Ltd PO Box Flinders Lane MELBOURNE VIC 8009 (03) 8668 3651

JK Geotechnics PO Box 976 NORTH RYDE BC NSW 1670 (02) 9888 5000

Keller Ground Engineering Pty Ltd Level 1, 4 Burbank Place BAULKHAM HILLS NSW 2153 (02) 8866 1160

Landpac Technologies Pty Ltd PO Box 132 SEVEN HILLS NSW 1730 (02) 9838 7044

Menard Bachy Pty Ltd 13-15 Lyonpark Road MACQUARIE PARK NSW 2113 (02) 9491 7100

Network Geotechnics 12/9-15 Gundah Road MT KURING-GAI NSW 2080 (02) 8438 0307

Norwegian Geotechnical Institute Pty Ltd Level 24, Allendale Square, 77 St Georges Terrace PERTH WA 6000 0420 575 949

Parsons Brinckerhoff (Aust) Pty Ltd PO Box 5394 SYDNEY NSW 2001 (02) 9272 5100

Pells Sullivan Meynink G3 56 Delhi Road NORTH RYDE NSW 2113 (02) 9812 5000

Piling Contractors Pty Ltd PO Box 346 LAWNTON QLD 4501 (07) 3285 5900

Piling and Concreting Australia Pty Ltd PO Box 1605 RUNAWAY BAY QLD 4216 (07) 3287 1915

Probedrill Pty Ltd 9 Baling Street COCKBURN CENTRAL WA 6164 (08) 9417 9933

xiiiAUSTRALIAN GEOMECHANICS | Volume 50: No.4 December 2015

FIRM ADDRESS PhONE

Retaining Solutions PO Box 6257DC DURAL NSW 2158 (02) 9899 2111

Reinforced Earth Pty Ltd Level 2, 20 George Street HORNSBY NSW 2077 (02) 9910 9910

Shirley Consulting Engineers Pty Ltd Suite 2A, 20 Bridge Street PYMBLE NSW 2073 (02) 9449 5577

Site Geoechnical Pty Ltd 1/17 Carbine Way MORNINGTON VIC 3931 (1300) 557 260

SMEC Australia Pty Ltd Level 5, 20 Berry Street NORTH SYDNEY NSW 2060 (02) 9255 5555

Specialised Geo Pty Ltd 6/28 Glenwood Drive THORNTON NSW 2232 0417 161 840

Sunwater Pty Ltd L10 179 Turbot Street BRISBANE QLD 4000 (07) 3120 0248

Tonkin & Taylor Pty Ltd Ground Floor, 95 Coventry Street SOUTHBANK VIC 3006 (03) 8796 7900

Trilab Pty Ltd 346A Bilsen Road GEEBUNG QLD 4034 (07) 3265 5656

Vibro-Pile (Aust) Pty Ltd 1 Steele Court MENTONE VIC 3194 (03) 9584 4544

Wagstaff Piling Pty Ltd PO Box 117 ASHGROVE QLD 4060 (07) 3366 2555

ADVERTISERSThe Australian Geomechanics Society gratefully acknowledges the support from firms that advertise in Australian Geomechanics.

FIRM PAGE

Australia Innova 96

Black Insitu Testing 41

Broons Hire 22

Chadwick Geotechnics Pty Ltd 42

Douglas Partners Pty Ltd 32

Durham Geo Slope Indicator Outside back cover

Earth Materials Pty Ltd 60

Federation University 50

Geobrugg Australia Pty Ltd 70

Geofabrics Australasia 69

Geosolve 96

GHD Geotechnics 50

FIRM PAGE

Insitu Geotech Services Inside front cover

Itasca 2

Landpac Technologies 21

Macquarie Geotechnical 31

Piling Contractors Pty Ltd Inside back cover

Probedrill Pty Ltd 59

Resource Potentials 79

SRG Ltd 79

Techsoft Australasia Pty Ltd 11

Tonkin & Taylor Pty Ltd 80

Trilab Pty Ltd 88

The Australian Geomechanics Society will be running a series of workshops from March 2016. The aim of the workshops is to enhance the capabilities of practicing engineers when applying soil mechanics, analysing data and solving problems involving unsaturated soils. The workshops will be delivered by experts on unsaturated soils from UNSW’s Centre for Infrastructure Engineering and Safety.

Unsaturated soils are widely encountered and need to be dealt with in many engineering problems, for example foundations, fills, embankments, pavements and slopes. In many cases true predictions of performance and true assessments of safety cannot be made without use of unsaturated soil mechanics. However, the use of unsaturated soil mechanics in practice is not routine. Many design and analysis techniques used are only applicable when soils are dry or fully saturated.

If you or your colleagues would like to attend, please find the registration form on the AGS website at: http://australiangeomechanics.org/course_post/ussm4pe-workshop/ and return the completed form via email to: [email protected] by Friday 26 February 2016 to assist the Australian Geomechanics Society with planning.

Subsequent workshops would be held in other capital cities as needed to meet demand.

OBJECTIVES OF THE WORKSHOPSThe objectives are for practitioners to learn how to:

• Build on their knowledge of saturated soil mechanics to account for the effects of partial saturation and suction using the effective stress concept

• Define and quantify stresses, strains, shear strength and deformation in unsaturated soils

• Determine shrink and swell potential in a mechanically consistent way

• Plan a program of laboratory tests and interpret data

• Determine parameters from laboratory testing and field/in situ testing

• Analyse seepage and moisture movement in unsaturated soils

• Assess lateral earth pressure and bearing capacity in unsaturated soils

• Analyse slope stability and account for strength loss due to rainfall

• Apply unsaturated soil mechanics in a range of problems, and take guidance from techniques used in case studies.

WHO SHOULD ATTENDThe workshops will be designed for engineers, geologists and other professionals who deal with unsaturated soils.

It is envisaged that each participant will have some industry experience and, as a minimum, a knowledge of soil mechanics and geotechnical engineering to Bachelor of Civil Engineering standard.

AGS Workshop onUnsatUrated soil mechanics For practicing engineers

thursday 31st march - Friday 1st april 2015

AUSTRALIAN GEOMECHANICS SOCIETY

University of new south Wales, Kensington campus

PRESENTERSNasser Khalili is a Professor at UNSW and is internationally recognised for his contributions to unsaturated soil mechanics and computational geo-mechanics. He is credited with the development of the first thermodynamically consistent framework for constitutive modelling of unsaturated porous media. Some of his seminal contributions to the field include: i) formulation of the first fully coupled flow and deformation model for unsaturated porous media including hydraulic and mechanical hystereses; ii) formulation of a bounding surface plasticity model for cyclic analysis of variably saturated soils, iii) formulation of a thermo-hydro-mechanical model for unsaturated porous media, iv) formulation of the first hypo-plasticity model for unsaturated media, and v) formulation of an equivalent skeletal stress for multi-phase multi-porous media. His work to the mechanics of multi phase multi porous media has attracted many awards and accolades. Similarly, his work on the mechanics of double porosity media is considered as a benchmark in numerical modelling of fractured porous media and is widely cited in the literature. He has worked in academic environment for 26 years, and as a consulting geotechnical engineer for four years.

Adrian Russell is an Associate Professor at UNSW and leads a number of research projects and themes focussed on fundamental mechanics, analytical modelling, and novel experimentation related to structures interacting with unsaturated soils. He has written more than 70 research papers, and has been awarded many times for his research. He is Secretary of TC106, the Technical Committee on Unsaturated Soils within the International Society for Soil Mechanics and Geotechnical Engineering. In 2014 he received the International Innovation Award from TC106 for his research on the CPT and retaining walls in unsaturated soils. He has worked in academic environment for 15 years, and as a consulting geotechnical engineer for three years.

MODE OF DELIVERYThe workshops will involve a number of formal lectures, tutorials and problem solving classes and case study presentations.

TOPICS COVERED1. Introduction to unsaturated soil

mechanics and the effective stress concept

2. Shear strength and deformation in unsaturated soils

3. Shrink and swell potential4. Laboratory testing, in situ testing

and parameter determination5. Seepage and moisture movement

in unsaturated soils6. Lateral earth pressure and bearing

capacity in unsaturated soils7. Rainfall induced slope instability8. Case studies

TIMING AND COSTThe workshop will be conducted over two days and will cost $1600 for AGS members and $1800 for non-members. An extensive set of notes and other resources will be provided. Lunch and snacks will also be provided.

Adrian Russell (right) and Liem Vo observe the laboratory controlled failure of an unsaturated soil adjacent to a retaining wall.

UNSW’s calibration chamber used to develop methods to interpret the CPT in a range of unsaturated soils.

5 ‒ 9 SEPT 2016

www.isc5.com.au Queensland AUSTRALIA Jupiters Hotel, Gold Coast

5th International Conference on Geotechnical and Geophysical Site Characterisation

First Notice and Call for Abstracts

5-9 September 2016 Gold Coast, Queensland, Australia

welcome The International Society for Soil Mechanics, Geotechnical Engineering Technical Committee TC102, and the Australian Geomechanics Society invite participation in ISC’5, the 5th International Conference on Geotechnical and Geophysical Site Characterisation.

INDICATIVE PROGRAMMonday Welcome, Cultural Performance.

Short Courses, Registration, Trade Exhibition bump-in

Tuesday Conference Sessions, Trade Exhibition, Committee Event, free night for dine-around

Wednesday Conference Sessions, Trade Exhibition, Conference Dinner

Thursday Conference Sessions, Trade Exhibition, Conference Close

Friday Optional Site Tours

ABSTRACTS DEADLINE 31st July 2015 Prospective authors are invited to submit one-page abstracts (max 300 words), which include the title of

postal and electronic addresses, and three keywords. Please click here to submit online.

TYPICAL TOPICS Theme Site Characterisation Penetrometry;; case histories;; design using in-situ tests;; environmental testing;; geophysics;; pressuremeter testing;; in situ testing of rock;; interpretation of in-situ tests;; interpretation from installation/drilling records;; liquefaction assessments;; new developments in equipment;; high quality sampling;; standards and standardisation;; stochastic in-situ testing;; tailings;; testing

Other related topics will be considered.

SPONSORSHIP AND EXHIBITORS Companies and organisations interested in sponsoring ISC’5 and/or participating in the trade exhibition are invited to contact [email protected] for further information.

The venue is Jupiter’s Casino Convention Centre, minutes from the world famous Gold Coast beaches, and surrounded by accommodation, some of which will be offered with special conference rates.

key dates Abstracts due: 31 July 2015 Manuscripts due: 31 January 2016 Final papers: 30 June 2016 Conference: 5-9 September 2016

JK MITCHELL LECTURE The 7th J K Mitchell Lecture will be presented by Prof An-Bin Huang.

KEY NOTE LECTURERS Dr Kenji Mori Dr Ken Been Prof Antonio Gens Prof Ross Boulanger Prof Carlos Santamarina Dr Nina Stark

Special Lectures will be presented by Prof Mark Randolph and Prof Paul Mayne.

CONTACT DETAILS ISC’5 Secretariat Renee Brown, [email protected] | 03 6234 7844

australi an geomecha nics · pdf filerock mesh application in highly fractured basalt rock...

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