going forward: what can we do?
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Going Forward: What Can We Do?. Limit Equilibrium Analysis of Slopes. Can We Improve Characterization?. Can we measure the inputs needed for numerical modelling? Better characterize fracture networks, joint stiffness and strength Can we keep better records? - PowerPoint PPT PresentationTRANSCRIPT
Going Forward: What Can We Do?
Limit Equilibrium Analysis of Slopes
Can We Improve Characterization?
Can we measure the inputs needed for numerical modelling?
Better characterize fracture networks, joint stiffness and strength
Can we keep better records?
Organized, well-kept, electronic records/data
Can We Improve Brittle Rock Modelling?
Common in many rock engineering situations
Can We Improve Brittle Rock Modelling?
Can we better model range of brittle fracture behaviours?
Brittle failure initiationPropagation of fractures after initiationBehaviour after failure – spalling, buckling, etc.
Potential of application of discontinuous numerical methodsDevelopment of improved constitutive models
Can We Better Apply Numerical Tools?
Can we progress towards quantitative predictions?Field measurements + back-analysis for in situ properties
Can we determine how efficient our designs are?Field measurements and monitoring in order to assess by how much we over-design
Can We Better Capture Variability?
Modelling of uncertainty and spatial variability?Application of
Conventional statistical approaches
Case IFS = 1.35, PF = 11.4%
Case IIFS = 1.12, PF = 0.71%
Can We Better Capture Variability?
Application of Geostatistics/Random Field Theory – resolution of tension between using ‘averaged’ values and ‘discrete’ values at different locationsRisk management techniques
Can We Better Capture Variability?
Factors of safety – ranged from 0.95 to 2.1
Thoughts on Implications of DFNs
Need for multiple realizationsAppropriately scaled block properties
Thoughts? Ideas? Questions?