SSIM 2021Second International Slope Stability in Mining Conference 26–28 October 2021 | Online | Duxton Hotel, Perth, Western Australia

SSIM 2021

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The Second International Slope Stability in Mining Conference (SSIM 2021) will provide a forum for open pit mining practitioners, consultants, researchers and suppliers worldwide to exchange views on best practice and state-of-the-art slope technologies. Best practice with respect to pit slope investigations, design, implementation and performance monitoring will be discussed during the conference. The conference will be held as a traditional physical event in Perth, Western Australia, COVID-19 permitting, as well as an online event, allowing participation from anywhere in the world.

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CONFERENCE CHAIR

Professor Phil DightProfessor of Geotechnical EngineeringAustralian Centre for GeomechanicsThe University of Western Australia

MONDAY | 25 OCT TUESDAY | 26 OCT WEDNESDAY | 27 OCT THURSDAY | 28 OCT FRIDAY | 29 OCT

Instrumentation and Slope Monitoring

WorkshopSSIM 2021

Risk-Based Design and Management of Open Pit

Slopes Workshop

Conference Dinner

CONFERENCE THEMES

• Processing of geotechnical data for uncertainty in design

• Slope stability and management in weathered and saprolitic rocks

• In situ stress determination• Calibration of numerical models based on historic data;

why, how and confirmation • Surface water and groundwater management,

dewatering, and depressurisation• Rockfall analysis and stabilisation strategies; effect of

scaling and success• Management of slope instability – techniques and

successes; runout• Determining slope failure mechanisms from

monitoring• Slope design implementation, blasting control and

damage control, measurement of blast damage effects on local and global stability

• Safety and risk management• Waste dumps and rehabilitation management

See insidefor list of received papers

Principal Sponsor

INVITED SPEAKER

Martyn RobothamGeneral Manager Surface Mining/Chief Geotechnical EngineerRio Tinto

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Dr Will DarlingtonPrincipal Geotechnical Engineer Grange Resources

Rob ThomasPrincipal ConsultantAbsolute Geotechnics Pty Ltd

INSTRUMENTATION AND SLOPE MONITORING WORKSHOP25 October 2021 | Online and in-person | Duxton Hotel, Perth, Western Australia

ASSOCIATED EVENTS

This ACG workshop will focus on new developments relating to conventional terrestrial monitoring systems such as open pit radars, prisms, laser scanning, and photogrammetry, as well as the integration of the different types of these monitoring systems and their interpretation. Application examples from many companies providing these new technologies include land cover determination, feature extraction, persistent change detection and monitoring, terrain slope characterisation, soils modelling and saturated ground detection.

RISK-BASED DESIGN AND MANAGEMENT OF OPEN PIT SLOPES WORKSHOP29 October 2021 | Online and in-person | Perth, Western AustraliaWithin the mining community, geotechnical risk is often under-appreciated, sometimes ignored and seldom properly quantified. The uncertainty and variability that engineers need to deal with necessitate a rigorous process of quantification or, in the very least, robustly qualifying likelihoods and consequences. The aim of this workshop is to provide a forum to discuss the methods used to design for geotechnical risk and those used to manage these risks; to identify shortcomings; and to close the gap between the state-of-the-art and the state-of-practice.

WORKSHOP FACILITATORProfessor Phil DightProfessor of Geotechnical EngineeringAustralian Centre for GeomechanicsThe University of Western Australia Australia

PRESENTERS INCLUDE• Albert Cabrejo, Group Geotechnical Sales Specialist, GroundProbe• Dr Richard Lynch, Technical Principal, Viotel Limited• Rigoberto Rimmelin, Global Practice Lead Geotechnical, BHP• Dr Felicia Weir, Principal, PSM

PRESENTERS INCLUDE• Dr Stephan Arndt, Senior Industry Process Consultant, GEOVIA, Dassault

Systèmes• Michael Dunn, Principal Geotechnical Engineer, Debswana Diamond Company• Mark Fowler, Managing Director, PSM• David Gaudreau, Director Mining, Newmont Australia• Julian Venter, Manager Geotechnical Engineering, AngloGold Ashanti

• Dr Felicia Weir, Principal, PSM

WORKSHOP FACILITATORProfessor Phil DightProfessor of Geotechnical EngineeringAustralian Centre for GeomechanicsThe University of Western Australia Australia

Ian de BruynPrincipal ConsultantSRK Consulting

Dr John ReadIndependent Consultant John R Read Associates Pty Ltd

Christian CancinoGeomechanics EngineerItasca Consulting Group Inc., USAKeynote title: Numerical assessment of an overall instability at Bajo de la Alumbrera mine

Keynote title: Building useful geotechnical models

Keynote title: 3D LE slope stability analyses, method and DAC uncertainties

Keynote title: Visualising bias of structural orientation data

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Name Badge Lanyard Sponsor

Principal Sponsor

Trade Exhibitors

Major Sponsors

Sponsor and exhibitor opportunities are available for this event. To learn more, visit acgsurfacemining.com/sponsorship

SPONSOR AND EXHIBITOR OPPORTUNITIES

®

Supporting Organisation

Open Access Sponsor

Years

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*Correct as at 7 July 2021. See acgsurfacemining.com for updates.

KEYNOTESBuilding useful geotechnical models IA de Bruyn, SRK Consulting, AustraliaNumerical assessment of an overall instability at Bajo de la Alumbrera mine CF Cancino, Itasca Consulting Group Inc., USA; R Silva, Itasca Chile SpA, Chile; C Giraud, Glencore, ArgentinaTBA W Darlngton, Grange ResourcesVisualising bias of structural orientation data RDH Thomas, Absolute Geotechnics Pty Ltd, Australia

PROCESSING OF GEOTECHNICAL DATA FOR UNCERTAINTY IN DESIGNDrone photogrammetry: a structural data gathering tool for open pit mining geotechnics J Dey, S Roy, SRK Consulting, India; A Matin, University of Calcutta, IndiaCase study: open pit 3D slope stability back-analysis for an anisotropic iron ore rock mass L Figueiredo, M Barros, Anglo American, Brazil; R Hammah, Rocscience, Inc., Ghana; Y Santos, T Souza, C Nogueira, Walm Engenharia, BrazilStructural data bias assessment at Jwaneng Mine K Gabanakgosi, O Mogorosi, K Rametlae, B Boitshepo, OM Barei, Debswana Diamond Company, BotswanaDevelopment and application of a reliability-based approach to slope design acceptance criteria at the Bingham Canyon Mine M Gaida, D Cambio, Rio Tinto, USA; ME Robotham, Rio Tinto, Australia; V Pere, Golder, AustraliaEstimation of shear strength of very coarse mine waste S Linero-Molina, LF Contreras, SRK Consulting, Australia; J Dixon, Fortescue Metals Group, AustraliaImproving reliability of the geotechnical model for Cenozoic cover sequence sediments in the Pilbara, WA DP Noble, DJ Hemraj, MJ Eggers, PSM, AustraliaThe importance of robust validation of geotechnical data and systematic domaining in defining appropriate rock mass parameters as inputs for modelling and design J Paul, SRK Consulting, Australia; M Griffin, Cowi, UKMining through historic underground workings and systematic void management processes at McArthur River Mine W Smith, McArthur River Mine, Australia; R Bertuzzi, PSM, AustraliaPreliminary identification of persistent or pervasive discontinuities from borehole data J Whittall, J Danielson, BGC Engineering Inc, Canada

SLOPE STABILITY AND MANAGEMENT IN WEATHERED AND SAPROLITIC ROCKSOptimal pitwall profiles to maximise the overall slope angle of open pit mines: the McLaughlin mine A Agosti, Newcastle University, UK; S Utili, Optimal Slope, and Newcastle University, UK; CI Valderrama, Itasca Chile SpA, ChileGeotechnical parameters for pit slopes in weak volcanic rocks on Simberi Island, Papua New Guinea NR Baczynski, Prime Geotechnics Pty Ltd, Australia; JN Moncrieff, FXJ Mining Technical Services, Australia; KA Woodward, Simberi Gold Company Limited, Papua New GuineaCompaction faulting in thick mudstone: a slope stability case study of Prominent Hill open pit mine, South Australia MJ Fowler, PSM, Australia; D Goodchild, OZ Minerals, AustraliaIN SITU STRESS DETERMINATIONViscoelastic stress relaxation rheology model in estimating continuous least principal stress magnitudes at depth in sedimentary rocks PP Mandal, Curtin University, Australia; J Sarout, CSIRO Mineral Resources, Australia; R Rezaee, M Sarmadivaleh, Curtin University, Australia

CALIBRATION OF NUMERICAL MODELS BASED ON HISTORIC DATA – WHY, HOW AND CONFIRMATIONApplication of 3D limit equilibrium in the slope stability assessment process D Dwumfour, J Dixon, Fortescue Metals Group, Australia; P Croft, Brockman Solutions, Australia; M Fredlund, Bentley Systems, CanadaFive-dimensional modelling of direction-dependent geotechnical variables LK Sanchez, University of Chile, and CSIRO-Chile International Center of Excellence in Mining and Mineral Processing, Chile; MINES ParisTech, France; XM Emery, University of Chile, Chile; SA Seguret, MINES ParisTech, Paris Sciences et Lettres University, FranceBack-analysis of open pit failure using 3D finite element analysis G Sweby, J Player, N Power, MineGeoTech Pty Ltd, AustraliaImproving bench design through discrete fracture network analysis M Valerio, S Rogers, Golder, Canada; KP Lawrence, Golder, USA; C Byrne, T Darakjian, Golder, Canada; M Gaida, D Cambio, GK Chapin, Rio Tinto Kennecott, USA

SURFACE WATER AND GROUNDWATER MANAGEMENT, DEWATERING AND DEPRESSURISATIONHorizontal drain holes: a case study A Duran, PSM, Australia

ROCKFALL ANALYSIS AND STABILISATION STRATEGIES; EFFECT OF SCALING AND SUCCESSNovel techniques for rockfall management using remote equipment at Savage River Mine WJ Darlington, IM Snyders, C Woodward, N Urmale, P Paramasivam, T Rathnaweera, Z Corbett, M Mohammadnejad, Grange Resources, Australia Natural slope hazard management and integration with mining operations M Eggers, T Nash, PSM, Australia; D Dwumfour, S Turbitt, J Dixon, Fortescue Metals Group, Australia

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Case study: rockfall assessment and mitigation at the Newmont Boddington Gold mine CL Powell, N Brockhurst, Newmont Australia, AustraliaGround support design in open pits and mine safety S Welideniya, Department of Mines, Industry Regulation and Safety, Australia; N Bar, Gecko Geotechnics Pty Ltd, Australia; J Price, MMG Limited, Australia

MANAGEMENT OF SLOPE INSTABILITY TECHNIQUES AND SUCCESSES; RUNOUTApplication of slope design using 3D limit equilibrium: case studies from the Pilbara D Dwumfour, R Jele, Z Jolly, Fortescue Metals Group, Australia Exploitation of InSAR techniques as a compliment of in situ data to improve safety and productivity in mining operations R Iglesias, D Monells, E Makhoul, R Calvo, J Duro, DARES Technology, SpainImproved prediction of runout distance for in situ highwall instability L Nairn, F Della Pasqua, D Payne, BHP, AustraliaA case study of Loy Yang mine: geotechnical considerations when remediating heat affected coal batters S Narendranathan, N Patel, GHD Pty Ltd, Australia; A Symonds, AGL Loy Yang, AustraliaFootwall design and management at McArthur River Mine F Weir, PSM Australia; C Heaven, McArthur River Mining, Australia; MJ Fowler, M Farmer, PSM, Australia

DETERMINING SLOPE FAILURE MECHANISMS FROM MONITORINGArtificial intelligence applied to the detection and early warning of geotechnical instabilities in mining slopes N Contador Villegas, H Huenchulao Catalan, JM Oliva Miranda, E Mining Technology S.A., Chile; F Dubournais Donoso, M Gallardo Arriagada, Antofagasta Minerals S.A., ChileSlope monitoring using fused sensors MK Elmouttie, X Luo, P Dean, J Duan, J Malos, CSIRO Mineral Resources, AustraliaAccumulated movement data and the amplitude dispersion index: a collation alarm N Greyling, S Coetsee, P Narshai, Reutech Mining, South AfricaWho needs resolution anyway? Three satellite InSAR case studies using coincident and contemporary datasets D Holden, 3v Geomatics Inc., Canada; D Cerin, 3v Geomatics Inc., Italy; K Mäkitaavola, F Ersholm, J Sjöberg, LKAB, SwedenWhat can we learn from long-term creep trends in open pit slopes? J Lupo, Newmont, USAA new approach for obtaining the shear modulus ratio during a slope failure process from instrumentation data E Medina, Geomechanics and Environment S.A.C., Peru; L Tejada, Vale S.A., BrazilIntroducing a data-driven framework for spatiotemporal slope stability analytics for failure estimation (SSSAFE) A Tordesillas, S Kahagalage, The University of Melbourne, Australia; L Campbell, P Bellett, GroundProbe, Orica, Australia; R Batterham, University of Melbourne, AustraliaSLOPE DESIGN IMPLEMENTATION, BLASTING CONTROL AND DAMAGE CONTROL, MEASUREMENT OF BLAST DAMAGE EFFECTS ON LOCAL AND GLOBAL STABILITYStability analysis of mine embankment against a river at an opencast coal mine RESC Kumar, A Ray, R Rai, Indian Institute of Technology, India; Y Kathuria, OCP India, India; M Khandelwal, Federation University, AustraliaCase study: bench turn over best practice and pit wall remediation at the Newmont Boddington gold mine CL Powell, N Brockhurst, C Wemmers, M Torombe, E Eames, D O’Callaghan, S Findlay, G Franks, Z Ubaid, A Lopez, Newmont Australia, AustraliaImprovement in operational continuity and risk management based on the integration of bench geotechnical condition and monitoring M Vargas, J Bello, C Calderon, TIMining, Chile

SAFETY AND RISK MANAGEMENT InSAR monitoring guidelines: using simple to use decision trees, an owner’s perspective M Desjardins, De Beers, Canada; PJH de Graaf, Anglo American, De Beers Group of Companies, AustraliaGeotechnical design uncertainty and data collection JI Mathis, Zostrich Geotechnical, USAIntegrated 3D laser scanning implementation for monitoring tailings dams P Monreal, Maptek, ChileFactors to be considered when applying atmospheric corrections to distance measurements: a case study of the Leica GeoMoS installation at Orapa, Letlhakane and Damtshaa mines O Randall, Debswana, Botswana; H Thomas, University of the Witwatersrand, South Africa

WASTE DUMPS AND REHABILITATION MANAGEMENT Innovative technique for improving coal mine waste dump stability: use of geosynthetics IL Muthreja, R Yerpude, Visvesvaraya National Institute of Technology, India

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The University of Western Australia 35 Stirling Highway (M600) Crawley WA 6009

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SSIM 2021 Conference Dinner 27 October 2021 154

SSIM 2021 Printed Proceedings (Softbound, colour) (Conference special) 220

Conference papers will be accessible at papers.acg.uwa.edu.au from 18 October 2021

How to register:

SSIM 2021 (2135) | 26–28 October 2021

EarlybirdPaid until 10 Sept 2021

Standard Paid after 10 Sept 2021

Standard 1,980 2,200

ACG Affiliate† 1,760 1,980

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Instrumentation and Slope Monitoring Workshop (2134) | 25 October 2021

EarlybirdPaid until 10 Sept 2021

Standard Paid after 10 Sept 2021

Standard 880 1,100

ACG Affiliate† 660 880

Student^ 220 440

Risk-Based Design and Management of Open Pit Slopes Workshop (2136) | 29 October 2021

EarlybirdPaid until 10 Sept 2021

Standard Paid after 10 Sept 2021

Standard 880 1,100

ACG Affiliate† 660 880

Student^ 220 440

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