Technical Specifications

Additional Output Parameters

• Hoek-Brown: rock mass tensile strength, compressive strength, deformation modulus
• Mohr-Coulomb: uniaxial compressive strength, alpha angle
• Power Curve: uniaxial compressive strength, tensile strength

Analysis of Test Data

• Triaxial or direct shear test data
• Lab or field (rock mass) data
• Curve fitting methods: Modified Cuckoo, Levenberg-Marquardt, Simplex, Linear Regression, user-defined
• Error summation: vertical, basic, parabolic tensile, Generalized Fairhurst
• Absolute and relative best fit residuals
• Data entry—in spreadsheet, from clipboard, import fi le (.roc, .rlb, .txt., .csv)
• Tensile cut-off options
• Data uncertainty analysis

Estimating Input Parameters

• GSI calculator
• Estimation of input parameters from built-in charts and tables: GSI, mi, sigci, D, C, phi, JRC, JCS, phir

Equivalent Mohr-Coulomb Parameters

• Equivalent cohesion and friction angle for non-linear criteria
• User-defined stress range
• Instantaneous (tangential)
• Cohesion and friction angle

Exporting Results

• One click export to Excel
• Copy to clipboard
• Export image fi le (.jpg, .bmp, .gif, .png)
• Export Slide2 shear-normal function

Failure Envelope Plots

• Principal stress plot (sigma1, sigma3)
• Shear-normal plot (tau, sigmaN)
• Linearized principal stress plot ((sigma1-sigma3)/2 , sigma3)
• Interactive plot display
• Stress sampler
• Instantaneous Mohr-Coulomb sampler
• Equivalent Mohr-Coulomb envelope for non-linear criteria
• Display test data on plots
• Multiple materials
• Formatting and customization of plots

Info Viewer

• Save as HTML
• Copy to clipboard
• Open in Browser

RocProp Database

• Primary database of intact rock properties (600+ records)search and filter by rock type, data type, geographical coordinates etc.
• Charting and statistics
• User database
• Link to Google Maps
• Export to Excel

Strength Criteria

• Mohr-Coulomb
• Generalized Hoek-Brown
• Barton-Bandis
• Power Curve

Stress Units

• Metric (MPa, kPa, tonnes/m2)
• Imperial (psi, psf, ksi, ksf, tons/ft2)