Venue: Pullman Lubumbashi Grand Karavia, 55 Route Du Golf, Quartier Golf, Lubumbashi, DRC
Language: English
Registration Fees:
Early Bird - USD $1000 (until April 28th, 2023)
Regular - USD $1200
10% discount on the course fee if registrants have Maintenance+ plans
What’s included:
Temporary software licenses for 30 days
Lunch and refreshments
PDF of course materials
Certificate
Please note:
Registrants will be responsible for their own accommodation.
Registrants must bring their own laptops (and mouse)
Registrant numbers are limited to 20.
Course Outline:
Rocscience is pleased to announce a training course in Lubumbashi, DRC, on applying the Rocscience's software suite to modelling and solving surface and underground mining excavation challenges. This four-day training course is designed for all experience levels and will cover the capabilities and features of the following software: Dips, Swedge, Unwedge, Slide2, Slide3, RS2, and RS3.
Objectives:
This hands-on training course will allow participants to achieve the following:
Learn simple yet powerful approaches to modelling mining slopes.
Develop high-quality models that provide insights on excavation behaviors.
Agenda:
Day 1: Fundamentals of Open Pit Slope Stability Analysis – Dips, SWedge and Slide2
Review of rock mass properties analysis and their estimation
Goals of slope stability analysis for open pits
Scales of slope behaviour in open pits and slope failure mechanisms
Benches
Inter-ramp slopes
Overall slope
Measures of stability – factor of safety, probability of failure, deformations
Design acceptance criteria and tolerable factors of safety and probabilities of failure
Open pit design workflow and overview of Rocscience tools for surface excavation (open pit) analysis
Slope stability analysis methods
Orientation data and kinematic stability analysis – Dips
Limit equilibrium analysis of surface wedges – SWedge
Stability analysis of surface wedges formed in rock slopes, defined by two intersecting discontinuity planes, slope surface, and optional tension crack for factor of safety against sliding
Bench design and analysis techniques
Stability of rotational and translational failure mechanisms (overall slope scale)
Empirical methods
Limit equilibrium methods
Numerical methods
Overview of the limit-equilibrium method (LEM) for slope stability analysis
Modelling spatial variability in material properties
Back-analysis of slope failures and calibration
Introduction to 3D limit equilibrium slope stability analysis – Slide3
Modeler and Interpreter
Compute engine
Advantages and disadvantages of 3D slope stability analysis
Developing model geometries in 3D
Importing excavation geometries and geology
Developing geometry from primitives
Developing geometry with tunnel designer
Simplification and repair of slope and geology geometry
Assigning material models and properties
Slip surfaces and search methods.
Modelling of faults and other major geological structures
Computing models
Interpreting results
Wedge analysis in Slide3
Engineering judgement and tips for practical, efficient modelling with Rocscience slope stability software
Day 3: Basics of Underground Mine Excavation Analysis (Dips, UnWedge and Introduction to Numerical Modelling Software and RS2)
Goals of underground mine modelling
Overview of rock masses, rock mechanics and underground excavation stability issues
Limit equilibrium analysis of underground wedges using Unwedge
Fundamentals of solid mechanics
Overview of rock mass mechanical behaviors
Deformations of solid materials under action of forces (static analysis)
Concepts of stress, strain and stress-strain relationships
Concept of principal stresses
Elastic behavior – materials undergoing small deformations when loaded and returning to original shape when unloaded.
Plastic behavior – materials undergoing permanent deformations when loaded and NOT returning to original shape when unloaded.
Strength of intact rock and rock masses – rock strength failure criteria
In-situ (pre-mining) state of stress
Numerical modelling of underground mine excavations
Overview of numerical analysis methods – advantages and disadvantages
Finite Element Method
Boundary Element Method
Constitutive laws governing the behavior of rock masses.
Overview of development of numerical models (construction of geometry, meshing, application of loads and boundary conditions, and analysis options)
Overview of the Finite Element Method and Introduction to RS2
2D finite element analysis of underground problems in rock
Developing model geometries
Estimating appropriate external boundaries for models
Choosing appropriate geotechnical material models
Classical material strength models – Mohr-Coulomb, Generalized Hoek Brown
Day 4: Fundamentals of Rock Engineering Numerical Modelling, Numerical Modelling with RS2 and RS3
Assigning material models and properties – elastic and plastic and material responses to loading
Specifying in situ stress state and initial conditions
Discretization and meshing
Applying boundary and initial conditions
Meshing models – mesh quality and refinement
Applying loads to excavations and underground structures
Stress analysis options in RS2
Computing models – solving excavation response (stresses and deformations) to loading.
Interpreting modelling results of underground analysis
Using modelling results to assess damage, and pillar and excavation stability.
Application and interpretation of elastic modelling results
Application and interpretation of plastic modelling results
Comparison of plastic and elastic results
Analysis of multi-stage models – mine sequencing
Modelling anisotropic and discontinuous rock mass behavior – joint networks
Specifying empirical failure/damage criteria (for excavations and pillars) in underground mining
Superimposing mine seismicity data unto numerical modelling outputs
Introduction to 3D finite element analysis of underground excavations in rock
Developing model geometries in 3D
Assigning material models and properties
Specifying excavation sequences
Modelling faults and other major geological structures
Specifying in situ stress conditions
Meshing models – mesh quality and refinement
Computing models
Interpretation of results in rock mass (contouring of stress points) and on joint surfaces
Modelling backfill support.
Modelling various support systems (liners, bolts, composite liners) in RS3
Stope sequencing principles
Estimating relaxation and dilution zones
Tips and pitfalls of model building
Course Instructors
Reginald Hammah, Ph.D., P.Eng., Director, Rocscience, Africa
Dr. Reginald Hammah holds a Ph.D. in Civil Engineering from the University of Toronto and brings over 20 years of experience in rock mechanics and geotechnical engineering. He uniquely blends practical problem- solving experience with software tools and theoretical understanding of excavation behavior. He is well known for breaking down complex problems into simpler, more familiar, and solvable components.
Get the Early Bird Offer Price when you register before April 28, 2023
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