1st Edition
The Evolution of Geotech - 25 Years of Innovation
This publication includes 82 technical papers presented at Rocscience International Conference (RIC) 2021, held online on April 20 and 21, 2021. Rocscience created this event to bring geotechnical academics, researchers and practitioners together to exchange ideas as part of celebrating 25 years of the company’s existence.
The papers in these proceedings were from keynotes, panel discussions and papers, selected after careful review of over 100 technical submissions delivered at RIC 2021. The technical papers were grouped into sessions based on their subject areas.
The conference aimed to stimulate discussions that could help the industry work towards overcoming geotechnical engineering limitations today. It also sought to foster creative thinking that will advance the current states of the art and practice. The keynote addresses, panel discussions and technical presentations tried to examine geotechnical problems and situations from fresh perspectives.
RIC 2021 hopes that the proceedings will continue to enrich our thinking and contribute to achieving a critical mass of change in our practices and approaches. We look forward to significant improvements in our industry.
Keynote Lectures
Reflections on 40+ years of rock engineering practice in mining
W.F. Bawden
Recent Advances in Seismic Soil Liquefaction Engineering
K.O. Cetin & H. T. Bilge
Advances in data-driven subsurface mapping
K-K Phoon & J. Ching
After decades of rock engineering modelling, are we asking the right questions?
M.S. Diederichs
Position Papers for Panel Discussion 1
Comprehensive Slope Monitoring Program for Managing LargeScale Instabilities: A Contribution to "From Monitoring and Calibration to Predictive Modelling"
N. Coli
Position Paper for "From Monitoring and Calibration to Predictive Modelling" Panel Discussion - Thoughts on Instrumentation/Monitoring and Numerical Model Calibration
W.F. Bawden
Panel Discussion: From Monitoring and Calibration to Predictive Modelling – Continuously Improving Models with Monitoring Data
N. Bar
Real-Time Data Collection from InSAR is Coming Soon: A Contribution to "From Monitoring and Calibration to Predictive Modelling" Panel Discussion
D. Colombo
Position Papers for Panel Discussion 2
Position Paper on Numerical Modelling: Perspectives from Technical Support on User Models
B. Corkum
Position Paper on Numerical Modelling: Philosophy
J. Carvalho
Position Paper on Numerical Modelling: Numerical Modelling Philosophy
T. R. Stacey
Position Paper on Numerical Modelling: Challenges in Tailings Dam Models
T. Bretas
Technical Sessions
Session 1 - Rock Mass Characterization:
Towards improved definition of the Hoek-Brown constant mi for numerical modelling
T.G. Carter
Study of the Effect on Stability of Slope Variations and Reserve Estimation in the Kaolin Mining Quarry Design
I. Chusna, N.R. Mulyaputra, V. Vergiagara & H. Suharyadi
How to incorporate variability of rockmass structures into equivalent continuum numerical models using the Composite Geological Strength Index
J. Day
Rock Mass Characterization of Molasse-like Deposit of Dahor Formation and Its Application To Rock Slope Stability From Bunati Area, South Kalimantan: A Preliminary Study
L. Zeremy
Session 2 - Tunnels & Caverns I
Brittle failure assessment for TBM tunneling under high overburden: A case study from Pahang-Selangor Raw Water Transfer Tunnel Project, Malaysia `
H.H. Shaalan, M.A.M. Ismail, R. Azit & I.N. Yusof
Use of continuum and pseudo-discontinuum FEM models in stepwise verification of the FDEM for simulating damage around tunnels in brittle rock
S. Markus & M. Diederichs
Numerical investigation of the relationship between the inflow rate to the tunnel, block volume and block surface area
A. Shahbazi, A. Saeidi & R. Chesnaux
Severe rockburst occurrence during construction of a complex hydroelectric plantG. Russo
Session 3 - Stability Analysis of Mining Slopes IA
nalytical versus numerical analysis on slope stability of surface lignite mines
A. Mikroutsikos, A. Theocharis, N. Koukouzas & I. Zevgolis
Practicalities when adopting a gradational damage factor within a Hoek-Brown constitutive model
P. Edmondson & V. Pere
Open pit 3D slope stability for anisotropic rock masses in soft iron ore deposits – A case study
L.T. Figueiredo, R. Hammah, Y. Santos, T. Souza & C. Nogueira
Comparison of the probabilistic and deterministic slope stability analysis of a dolomite quarry in HungaryG. Bögöly & F. Füzesi
Session 4 - Probabilistic Slope Stability Analysis I
Considering multiple failure modes: a comparison of probabilistic analysis and multi-modal optimization for a 3D slope stability case study
B. Cami, T. Yacoub, T. Ma, B. Corkum & S. Javankhoshdel
Assessment of asperities geometry influence on MSW landfill critical interface side-slope stability using probabilistic analysis 199
D.D. Adeleke, D. Kalumba, L. Nolutshugu & J. Oriokot
Schematization of Soil Properties in Mathematical Modeling of Slope StabilityI. Fomenko
Session 5 - New Technologies in Geotechnical Engineering
Artificial intelligence and image processing in the MIRET approach for the water detection and integrated geotechnical management of existing mechanized tunnels: methodology, algorithm and case study
F. Foria, D. Cuccato, M. Calicchio, S. Rinaldo, A. Tarquini, & G. Bomben
An integrated geotechnical risk management approach using cloud-based risk assessments, artificial intelligence, satellite monitoring and drone technology
J. Strydom
Remote sensing and mapping of geological rock-mass features employing advanced data analytics and artificial intelligence.
S. Amvrazis, J. Patzelt, C. Binder, M. Smesnik & A. Freuis
Tunnel liner yield forecasting at Cigar Lake Mine: an Input Omission approach to understanding machine learning processesJ. Morgenroth, M.A. Perras & U. T. Khan
Session 6 - Surface Excavations
Evaluation of theoretical liquefaction of compacted tailings piles based on the state parameter approach: a case study
E. O. Muguet & R. Silva
Lessons Learnt from 3D Soil-Structure Modeling of a Peanut Shaped Cofferdam for Cut & Cover Tunnel
A.K.L. Kwong
Field instrumentation based performance verification of an improved soil siteA. Yunatci, H. Bilge, E. Çakır & Y.U. Doğan
Session 7 - 3D Slope Stability Analysis
Finite element analysis of a deep excavation: A case study ground response due to deep excavations in Sydney Sandstone
M. Kitson & M. Kitson
North wall stability analysis of Vasilkovskoye open pit Kazakhstan
D. Dossymbek & S. Mortazavi
3-D stability analyses in soft clays with strain-softening
M.P. Pacheco & M. Pacheco
On the comparison of 2D and 3D stability analyses of an anisotropic slopeA. McQuillan, N. Bar & T. Yacoub
Session 8 - Numerical Slope Stability Analysis I
Numerical profile modeling for transient groundwater flow at pit slope
E. Leonteva & R. Sapachev
Soil-Structure Interaction of Mechanically Stabilized Earth (MSE) Retaining Walls Subjected to Construction Sequencing and Seismic Loading
L.L. Clemente, G.P. Ventura & PE.B. Quinay
2D and 3D Numerical Study of Geosynthetic Mechanically Stabilized Earth GMSE Walls
E.L.A. Montilla, E.R. Esquivel & F.H. Martins Portelinha
2D and 3D FEM modeling of the initiation of progressive landslidesR. Dey & S. Javankhoshdel
Session 9 - Liquefaction & Foundation Analysis
Bearing capacity and settlement analysis of closely spaced shallow foundations with various footing geometry on multi-layered soils
M.E.C. Amorin & G.P. Ventura
Behaviour of Rigid Block on Uniform Sand Under Horizontal Base Acceleration
N. Trbović, V. Jagodnik & N. Čeh
Skin Friction Displacement Relations for Load Settlement Behaviour of Bored Piles in Dubai
A. Mufty
Implementation of Constrained Differential Evolution in Reliability-based Evaluation of Soil-Structure Interactioninfluenced Liquefaction PotentialC.R. Guanzon, G.P. Ventura & A.S. Freire
Session 10 - Stability Analysis of Mining Slopes II
The effect of water filling on slope stability of open pits: a numerical investigation
I. Zevgolis, A. Mikroutsikos & A.I. Theocharis
Geotechnical Analysis of Cut and Fill Mining Sequence on Dumping Materials Re-handling XPit by Using Slide3
P. Handanawarih & Z.I. Munthaha
3D Slope Stability Analysis of a Filtered Iron Ore Tailings Dry Stacking
A.S. Freire, T.C. Bretas, T.B.G. Moreira & M.C. Medeiros
Slope Angle Optimization Applied for Geometry Design Of An Open Pit Iron Ore MineM. C. Medeiros, B.A. Alemão, M .A.P. Guimarães, T.C. Bretas, F. F.M. Vilela, T.B.G. Moreira
Session 11 - Probabilistic Slope Stability Analysis II
Back Analysis For Landslide In Mine Waste Dump Slope Using Probabilistic Analysis
G. Firmanda, A. Gemas & P. Nayoan
Reliability analysis of soil nail walls using SRV and RLEM approaches
S.M. Asadollahi, M. Rezvani, A. Fakher & S. Javankhoshdel
Probabilistic slope stability analysis of a case study using Random Limit Equilibrium Method and Surface Altering Optimization
S. Javankhoshdel, T. Ma, B. Cami, R.J. Chenari & T. Yacoub
Simulating the topography induced stresses using 3D numerical modelingW. Ali & R.A. Abdullah
Session 12 - Numerical Slope Stability Analysis II
Consistent evaluation of slope safety factors between different strength criteria
J. Clausen
Global Stability Assessment of Open Pit Slopes Using LEM and FEM: A Comparison between the Factor of Safety and Strength Reduction Factor
J. Goodale & B. Fisher
A simple method to model buckling slope instability using continuum numerical models
R. Ridl, D.H. Bell, M.C. Villenueve & D.F. Macfarlane
Interaction of Twin Tunnels within Weak Rock Masses and SlopesI. Vazaios & N. Vlachopoulos
Session 13 - Tunnels & Caverns II
The probabilistic analysis of steep lakeside slopes; geotechnical-geological-hydrogeological constraints and numerical analysis, an example from Hungary
F. K. Nagy-Göde & Á. Török
Weathered Rock and Crack Detection of Tunnel Excavation using Image Analysis
I.N. Yusoff, T. Miyoshi, M.A.M. Ismail, K. Date, H. Tobe & Y. Yokota
Numerical investigation of the stability of tunnel excavation faces in deep tunnels
D. Georgiou, M. Kavvadas & A. Kalos
A numerical investigation on the influence of rockmass parameters and yield mechanics in pillar designE.J. Dressel & M. Diederichs
Session 14 - Stability Analysis of Mining Slopes IIIC
ontinuous Wall Stabilization of Impoundment Slopes
W. Carswell, L.C. Barlow & D.R. Siebert
Landslide Hazard and Risk Level Assessment of Quarried Slopes in Lebanon using Drone Imagery
R. Kaafarani & G.A. Jaoude
Back-analysis of ductile slope failure mechanisms and validation with aerial photogrammetry, InSAR and GbRAR to proactively manage economic risks to protect the mine plan
N. Bar, L.A. Mosquea, M. Arrieta, B. Mojica, A. Espino, A. McQuillan, C. Diaz, G. Baldeon, G. Falorni
Comparison between GSI-based implicit and explicit structure modelsC. Fischer & M.S. Diederichs
Session 15 - Spatial Variability in Probabilistic Slope Stability Analysis
Probabilistic analysis of geosynthetic reinforced slopes using 2D and 3D models
P. Dastpak, B. Cami, D. Dias, S. Javankhoshdel & R.J. Chenari
A stochastic spatial modeling approach for pit slope stability analysis using 3D Limit Equilibrium Analysis
F. Cudjoe & K. Esmaeili
Developing spatially constrained Discrete Fracture Network (DFN) models for a stochastic pit slope stability analysis
Y. Zhao , K. Esmaeili & J. Ran
Probabilistic Analysis of an Open Pit Mine Slope in the Central African Copperbelt with Spatially Variable StrengthsS. Cylwik, S.B. Cox & J.J. Potter
Session 16 - Numerical Analysis of Underground Excavations
Options for designing a hold-retain strategy for excavations in stratified rock
R. Seedsman
The fast multipole method for the computation of large-scale three-dimensional elastostatics boundary-element problems in underground excavations
H. Wahanik, S. Moallemi, J.H. Curran & T. Yacoub
Life-of-mine deformation and stability assessment for Kibali conditions in Western 9000 series lodes 569
G. Kaleba
Numerical models for the design and construction of new underground structures at CERN (HL-LHC), Point 5D. Merlini, M. Falanesca, G. Bella, R. Schürch, F. Gianelli, A. Luz Lopez- Hernandez
Session 17 - Stability Analysis of Jointed Rock Slopes
Modelling the effectiveness of a grout curtain for construction groundwater control in Karst for a lock excavation
V. Bateman
Application of discrete fracture networks (DFN`s) to the design of benches in an open pit mine in South Africa
V. Kuppusamy
Comparison of 2D-3D limit equilibrium and finite element methods for the analysis of bi-planar rock slope failures
Y.U. Doğan & N.S. Isik
On the use of Extended Finite Element Method (XFEM) for jointed rock slope problemsS. Moallemi, T. Yacoub, T. Yee, B. Corkum, D. Qi & J. Curran
Session 18 - Limit Equilibrium Slope Stability Analysis
Mitigation measures for the protection of working railway lines from landslides: the case study of Altare and Santuario
F. Foria, R. Giordano & G. Cordua
Can 2D cross sections be safely extrapolated?
C. MacRobert, T. Mutede & N. de Koker
Characterization and stabilization of a mine waste dump-landslide
E. Türk, S. Oguzhan & Ö. Dumanlilar
Case study – Development of a practical design for a landslip site using advanced geotechnical software.
D. Egan, A.Zaharescu & I. Williams
Biography
Reginald Hammah, John Curran