Product Overview
Cpillar
Crown Pillar Stability Analysis
Get quick and easy stability analysis of surface or underground crown pillars and laminated roof beds using three different limit equilibrium analysis methods: rigid plate, elastic plate, and Voussoir (no tension) plate analysis.
Sensitivity & Probabilistic Analysis
Perform probabilistic analysis to determine the probability of failure. Model variability in geometry, point of force application, joint and bedding strength, water pressure, external loads and more by assigning statistical distributions to variables.
Empirical Design Method
Originally developed for steeply dipping ore body geometries, by estimating crown geometry and assessing the stope geometry as steep or shallow, you can apply the most appropriate empirical relationships to your model.
Specifications
Analysis Methods :
Analysis Methods
Rigid plate analysis
Elastic plate analysis
Voussoir (no tension) plate analysis
Deterministic or probabilistic analysis type
Sensitivity analysis
Failure Modes :
Shear (vertical slippage at abutments)
Elastic buckling
Arch snap-thru (buckling due to gravity)
Localized crushing failure
File Output :
Save processed file
Export to Excel
Export image
Copy to clipboard
Geometry Definition :
Pillar length
Pillar width
Pillar height
Rock unit weight
Overburden unit weight
Water unit weight
Permeable or impermeable pillar
Face dip (Voussoir)
Interface :
Info Viewer provides a comprehensive summary of model
Input data and analysis results, in a formatted text listing
Display Options allows for customized colours, fonts, significant digits, view controls
Three-dimensional pillar display
Auto-compute results checkbox
Lateral Stress Definition :
Stress type: Constant or Gravity
Water height
Overburden thickness
Horizontal sigma x; horizontal sigma y (constant stress)
Horizontal/vertical Kx; horizontal vertical Ky (gravity stress)
Support pressure (Voussoir)
Probabilistic Analysis :
Probability of failure
Monte Carlo or Latin Hypercube sampling method
Histogram plot
Cumulative plot
Scatter plot
Highlight failed cases with a factor of safety below a certain value
Plot regression line
Shear Strength Criterion :
Mohr-Coulomb
Generalized Hoek-Brown (GSI, mi, D)
Generalized Hoek-Brown (mb, s, a)
Hoek-Brown
Statistical Distributions :
Normal
Uniform
Triangular
Beta
Exponential
Lognormal
Gamma
Product Reference
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