Associated Events

Workshop in Mining Geomechanical Risk – Parts I & II

PART I: Introduction to Risk-Based Design and Probabilistic Methods Workshop, 8 April 2019 | Perth, Western Australia

 

Register here

 

07:15REGISTRATION
SESSION ONEIntroduction to probability, risk and design Associate Professor Johan Wesseloo, ACG
08:00Design acceptance criteria
08:40Important concepts related to probabilistic and risk-based design
10:00MORNING BREAK
10:30Design acceptance levels for safety risk and economic risk
11:00Evaluating data uncertainty and sufficiency Professor John Hadjigeorgiou, University of Toronto, Canada
12:30LUNCH
SESSION TWOCalculation techniques for performing probabilistic calculations. Introduction to probabilistic calculation techniques Associate Professor Johan Wesseloo, ACG
13:30Monte Carlo type methods
13:50The Point Estimate Method
14:10The Response Surface Method
14:30The Response Influence Factor Method
14:50AFTERNOON BREAK
15:20A systematic approach to the design of experiment
15:40Fault trees and event trees
16:00Discussion
17:00WORKSHOP CLOSE
Preliminary programme subject to change

 

Workshop Facilitator:

Johan Wesseloo

Associate Professor Johan Wesseloo
Principal Research Fellow — Rock Engineering
Project Leader — mXrap Development
Australian Centre for Geomechanics

Johan has been involved in geotechnical engineering since 1998, with experience in both underground and open pit environments. Johan obtained a BEng (Civil), MEng and PhD (Geotechnical) from The University of Pretoria, South Africa and is Fellow of the Southern African Institute of Mining and Metallurgy. He started his career as a geotechnical engineer with SRK Consulting, South Africa. In 2007, Johan joined the Australian Centre for Geomechanics, where he led and completed the ACG’s High Resolution Seismic Monitoring in Open Pit Mines project and the Mine Seismicity and Rockburst Risk Management. Johan has an interest in the rock engineering aspects of mine-induced seismicity and developed several procedures and methods for seismic analysis for rock engineering purposes and mining seismic hazard assessment methods, which are integrated into mXrap Apps.

 

Underground Stream

07:15Registration
07:50Welcome and Introduction
UNDERGROUND APPLICATIONS OF RISK-BASED DESIGN William Joughin, SRK Consulting (South Africa) (Pty) Ltd, South Africa
08:00Risk-based approach to support design
08:30Developing a damage risk model
09:00Economic and safety risk evaluation
09:30Discussion
10:00Morning Break
APPLICATION OF PROBABILISTIC METHODS WITH NUMERICAL MODELS
10:30Numerical modelling applications of Point Estimate Method and Response Surface Method Joseph Muaka, Joseph Ultimate Solution (Pty) Ltd, South Africa
11:00Stress Superposition methods and design of experiment with numerical methods Johan Wesseloo, Australian Centre for Geomechanics
12:00Discussion
12:30Lunch
13:30Drift design using discrete fracture network modelling
15:00Afternoon Break
15:30Geomechanics risk: quantitative tools and methods (advanced) Dr Stephan Arndt, Dassault Systemes, Australia
16:30Discussion
17:00Workshop Close
Preliminary programme is subject to change

 

Workshop Facilitators:

William Joughin

Chairman
SRK Consulting (South Africa) (Pty) Ltd

William spent 25 years in underground rock engineering, working on South African deep-level gold mines before joining SRK Consulting in 1998. He specialises in underground rock engineering investigation and design, with expertise in numerical modelling, selecting mining methods, designing excavations, investigating shaft stability and geotechnical risk, while providing consultancy services for mining projects on five continents. William is Vice President, African Region of the International Society for Rock Mechanics. He received the Southern African Institute of Mining and Metallurgy’s gold medal and the Alec Wilson Award for outstanding papers.

mining geomechanical risk chair

Associate Professor Johan Wesseloo

Principal Research Fellow — Rock Engineering
Project Leader — mXrap Development
Australian Centre for Geomechanics

Johan has been involved in geotechnical engineering in the mining industry since 1998, with project experience that includes both underground and open pit environments. He obtained a BEng (Civil), MEng (Geotechnical) and PhD (Geotechnical) from The University of Pretoria, South Africa and is Fellow of the Southern African and The Australian Institutes of Mining and Metallurgy. He started his career as a geotechnical engineer with SRK Consulting, South Africa in 1998 and joined the ACG in 2007. Johan has an interest in the rock engineering aspects of mine induced seismicity and has developed several procedures and methods for seismic analysis for rock engineering purposes and mining seismic hazard assessment methods; featured in the ACG software mXrap. Johan has also contributed to the field of risk-based design in mining rock slope engineering and underground environments.

Presenters Include:

Dr Stephan Arndt

Portfolio Senior Technical Manager, GEOVIA
Dassault Systèmes , Australia

Stephan has over 25 years’ experience in advanced simulation methods in applications of rock mechanics, seismicity, discrete fracture networks, coupled multi-physics simulations, fracture mechanics and constitutive models. His research interests include emerging technologies in geomechanics; cross-industry synergies; scalability of modelling methods; integration of machine learning and optimisation; better quantification of risk under uncertainty; and using high performance computing, visualisation and virtual reality in decision making. Stephan has extensive consulting experience in the mining sector consulting for major mining projects in Australia and overseas.

William Joughin

Chairman
SRK Consulting (South Africa) (Pty) Ltd

William spent 25 years in underground rock engineering, working on South African deep-level gold mines before joining SRK Consulting in 1998. He specialises in underground rock engineering investigation and design, with expertise in numerical modelling, selecting mining methods, designing excavations, investigating shaft stability and geotechnical risk, while providing consultancy services for mining projects on five continents. William is Vice President, African Region of the International Society for Rock Mechanics. He received the Southern African Institute of Mining and Metallurgy’s gold medal and the Alec Wilson Award for outstanding papers.

Open Pit Stream

08:00Registration
08:50Welcome and introduction Professor Phil Dight, Australian Centre for Geomechanics
09:00Geotechnical uncertainty and the management of open pit slope risk Michael Dunn, Evolution Mining Ltd
10:00Morning Break
10:30Presentation title TBA David Gaudreau, Newmont Mining Corporation
11:00Coal mining in steeply dipping strata and managing risk Alex Duran, Pells Sullivan Meynink
11:30Presentation title TBA Julian Venter, AngloGold Ashanti Limited
12:00Lunch
13:00Presentation title TBA Dr Felicia Weir, Pells Sullivan Meynink
13:30The great expectations of risk assessments Emrich Hamman, AngloGold Ashanti Australia Ltd
14:00How do you determine your risk profile? How do you calibrate your models? Professor Phil Dight
15:00Afternoon Break
15:30Discussion
16:30Workshop Close
Preliminary programme is subject to change

 

Workshop Facilitator:

Professor Phil Dight – Open Pit Stream Facilitator
Professor of Geotechnical Engineering
Australian Centre for Geomechanics

Phil has been involved with the development and design of ground support for mining applications since 1975. Phil joined the ACG in 2008 and has since been working on stress memory effects in rocks, ground support applications, slope stability problems (including the use of microseismicity to understand failure mechanisms), and 3D rock properties. In 2017, Phil commenced a four year MRIWA project aimed at investigating the issues of strainburst vulnerability in underground mines.

Presenters include:

Michael Dunn

Group Manager – Geotechnical
Evolution Mining Ltd

Michael has 25 years’ mining geotechnical engineering experience in operational, corporate and consulting roles. He has experience in South Africa, Australia, New Zealand, Indonesia, Ghana and the USA, covering a range of deep to near surface underground mining methods and small to large open pits. Michael has held several senior roles at AngloGold Ashanti, Newmont and SRK Consulting. In November 2015, he joined Evolution Mining as the Group Manager – Geotechnical and is responsible for providing geotechnical oversight and guidance for several underground and open pit operations and tailings storage facilities. Michael has a strong interest in the geotechnical design process, especially with respect to understanding geotechnical uncertainty and managing geotechnical risk. Michael is a Fellow and Chartered Professional of the AusIMM and has published 28 technical papers.

Alex Duran

Principal Geotechnical Engineer
Pells Sullivan Meynink

Presentation:Coal mining in steeply dipping strata and managing risk”

Alex is a principal with PSM. Alex has been actively engaged in providing geotechnical advice to the open cut mining industry for over 30 years and has worked on a diverse range of projects both within Australia and overseas. Within the last 10 years, focus has been on providing advice to the coal sector for both dragline and truck /shovel operations. Part of this experience has been with steeply dipping strata, uncommon to Australia, and has brought a raft of challenges in design the slopes and managing the risk.

David Gaudreau

Director Mining Newmont Australia
Newmont Mining Corporation

David has over two decades of mining, geotechnical and mine production management experience. He serviced sites and projects in Australia, Canada, Indonesia, China, Laos and India. He was involved in several projects spanning diverse geographical areas for surface and underground operations, ranging from conceptual studies to mine closure planning and execution. David has had leadership roles in mine operations management, geotechnical engineering, technical services management as well as consulting. He joined Newmont in September 2017 as Director Mining for the Australian region.

Julian Venter

Manager Geotechnical Engineering
AngloGold Ashanti Limited

Julian Venter graduated from the University of Pretoria (UP) in 2000 with a Bachelor’s degree in Civil Engineering. Subsequently he obtained Master’s degrees in Geotechnical Engineering from UP in 2004, a Graduate Diploma in Rock Mechanics from the University of the Witwatersrand in 2007 followed by an MBa and a Master’s degree in Mineral Economics from Curtin University in 2017. He started his working career with SRK Consulting in Johannesburg in 2002 where he gained a well-rounded geotechnical exposure to a variety of problems including open pit and underground mining and construction. For geotechnical risk work carried out at SRK he was co-recipient of the SAIMM Gold medal in 2007 and also co-recipient of the ARMA Award for Applied Rock Mechanics Research in 2009. In 2008 Julian and his family moved to Tom Price in Australia where he joined Rio Tinto’s Tom Price Iron Ore mine as Senior Geotechnical Engineer accountable for Tom Price and periodically Marandoo and Brockman 2 operations. After carrying out further roles in Rio Tinto in Mine Planning, Technical Services Superintendent at Tom Price, Technical Serves Superintendent at Brockman 2 and Geotechnical Superintendent for the East Pilbara, he left Rio Tinto in 2015 to join SRG Limited as National Manager Geotechnical Engineering. In 2016 Julian started with AngloGold Ashanti as Geotechnical Manager for the Continental Africa Region. A position he still holds. Throughout his career Julian has served on open pit design teams in roles including: contributor, technical lead, project manager, project director and third party reviewer for more than 200 open pits and cut backs. Based on this experience he has become a champion of rigorous data based design processes based on a proper understanding of risk.

Dr Felicia Weir

Principal
Pells Sullivan Meynink

Felicia Weir is a Principal Engineering Geologist of Pells Sullivan Meynink Pty Ltd, with over 12 years’ experience in her field. Felicia joined PSM after completing her PhD in Geomorphology. Felicia’s primary areas of practice include engineering geology, 3D geotechnical models and stability assessments for open cut mining.
Felicia enjoys a spectrum of projects from short life operations to large scale pits in complex risk settings. The development of accurate ground models and appropriate slope designs is her greatest pleasure. With recent work as Acting Geotechnical Superintendent at Ok Tedi Mine she has a good appreciation of the challenges faced in operations.
Felicia has worked on numerous major mining projects across Australia, Asia and Africa, including a number of large and technically challenging projects including Olympic Dam Open Pit Expansion, Ok Tedi operations and design in geothermal conditions at Lihir Gold Mine.

Paste & Tailings Stream

07:45Registration
08:30Welcome and introduction Professor Andy Fourie, The University of Western Australia
08:45Overview of methods of construction and operation of tailings storage facilities Andy Fourie
09:00Failure statistics and consequences Andy Fourie
09:30Modes of failure Andy Fourie
10:00Discussion
10:15Morning Break
10:45Governance and risk management Dr Bruce Brown, Bruce Brown Consulting Pty Ltd
11:15Role of the Engineer of Record Johan Boshoff, Golder Associates Pty Ltd
11:45Planning for the full life-cycle of a tailings storage facility Brett Stephens, Klohn Crippen Berger
12:15Discussion
12:45Lunch
13:45Risk-based approach embodied in ANCOLD Guidelines Andy Fourie
14:00Governance and risk Brett Stephens
14:45Failures and legislation Norm Himsley, Dam Safety Management Consultant
15:15Afternoon Break
15:45Monitoring and testing strategies Andy Fourie
16:15Panel discussion: BAT and BAP
17:00Workshop Close
Preliminary programme is subject to change

 

Workshop Facilitator:

Professor Andy Fourie – Paste and Tailings Stream Facilitator
Professor of Civil Environmental & Mining
The University of Western Australia

Andy Fourie is a Professor in the School of Civil, Environmental and Mining Engineering at the University of Western Australia in Perth.
He has Bachelors and Masters degrees from the University of the Witwatersrand in South Africa, and a PhD from Imperial College, University of London. He has worked at the University of Queensland, the University of Witwatersrand and has been a visiting professor at the University of Alberta, the Catholic University of Valparaiso in Chile and the University of Colorado in Boulder. His research is in the field of mitigating the impact of mining and municipal solid waste disposal. Outcomes from his research have been incorporated in changes to environmental legislation in South Africa. He has recently contributed to a series of Guidelines for managing mine tailings in Australia, as well as developing a document for the International Atomic Energy Association on barrier systems for retaining uranium mining waste.

Presenters include:

Johan Boshoff

Principal Tailings Engineer
Golder Associates Pty Ltd

Johan Boshoff has been involved in geotechnical engineering aspects of projects for the past 24 years.  His expertise includes detailed design, monitoring and project management of tailings storage facilities, mine residue stockpiles and waste rock dumps. Johan lead projects related to mine waste management from scoping through to implementation. Projects would include conventional and thickened tailings storage schemes, integrated landforms and waste rock dumps. Johan has worked on projects in South Africa, West and Central Africa, Australasia, Asia and Latin America. Johan is also the primary and supporting author of numerous publications, conference and work papers dealing with tailings engineering aspects and mine waste.

 

Dr Bruce Brown

Director
Bruce Brown Consulting Pty Ltd

Presentation: “Application of good governance to manage mine waste risks”

Bruce has 43 years’ experience in geotechnical engineering and mine waste management. His career has comprised 25 years as a principal of the international consulting group, Knight Piésold Consulting and 13 years as the Chief Adviser, Tailings and Dams for Rio Tinto, Technology and Innovation. In this time he has been responsible for the design, construction, operation and closure of numerous tailings storage facilities in North and South America, Africa, Europe, Asia, Australia and the South Pacific. His experience ranges from the cold regions of Alaska and Northern Canada to the mountainous regions of South America and tropical, monsoonal countries. With Rio Tinto, he has been focussed on risk management, technical reviews and development of standards for effective mine waste management. He was an author of the ANCOLD Guidelines on Planning, Design, Construction, Operation and Closure of Tailings Dams and the Federal EPA Tailings Containment module of the Best Practice Environmental Management in Mining.
Dr Brown is now in private practice and offers services to the mining and consulting communities for peer and independent technical and strategic reviews, audits for operations and construction quality assurance, risk assessments, conceptual design and value engineering.

 

Norman Himsley

Dam Safety Management Consultant

Norm has over forty-five years’ experience in the planning, investigation, design, construction, operation and maintenance of major engineering structures and infrastructure including buildings, dams (water and tailings), roads, bridges, power stations and water and sewage distribution and treatment. For the past nine years he has specialised as a dam’s consultant working on dams in the water and mining industries throughout the world mentoring dam consultant engineers, peer reviewing design, surveillance and investigation work. In tandem, he is also one of the two independent expert members of the NSW Dams Safety Committee (DSC) charged with setting and auditing the safety standards of the 400 prescribed dams in NSW to protect the community from dam failures. He has also been involved in, or chaired, several working groups in the preparation of ANCOLD Guidelines on various dam management subjects and was Chair of the ANCOLD Professional Development Working Group.

 

Brett Stephens

Principal, Senior Geotechnical Engineer
Klohn Crippen Berger

Brett is a principal with Klohn Crippen Berger and has 30 years’ experience in geotechnical engineering and mining waste management. He is a registered Professional Engineer in Queensland, Canada and the United States of America. His experience includes planning, dam safety audits, design, construction, monitoring, and surveillance and operation of tailings and mine waste structures. Brett has worked on mining and resource projects in Australia, Southeast Asia, North America and Africa. Prior to returning to Australia in 2017, he spent 14 years in Canada working on projects in the oil sands and other mining projects in Canada and the United States of America.