Roclab1 Rocdata4
Roclab1 Rocdata4
Roclab1 Rocdata4
Applicable Materials
1
Interactive Failure Envelope Analysis
Interactive failure envelope analysis allows you to enter/edit the strength criterion
parameters, instantaneously view the change in the failure envelopes (principal stress and
shear-normal plots), and graphically sample the data at any location on the envelope.
Interactive tables and charts, which assist the user to determine suitable values of input
parameters for the strength criteria.
Notes:
1. estimate GSI, mi, intact UCS and D
2. estimate cohesion and friction angle for a variety of rock and soil types
3. estimate basic/residual friction angle, JRC, JCS
2
Curve Fitting of Test Data
Notes:
1. Triaxial test data can be fit using Hoek-Brown, Mohr-Coulomb or Power Curve
criteria
2. Direct shear test data can be fit using Mohr-Coulomb, Power Curve or Barton-
Bandis criteria
3. Triaxial test data can be displayed as points on the principal stress plot, and as
Mohr circles on the shear-normal plot. Direct shear data can be displayed as
points on a shear-normal plot, and is not displayed on the principal stress plot.
Notes:
1. The L-M method can be used in conjunction with all non-linear or linear strength
envelopes
2. The Simplex method (in RocData) can be used with all strength envelopes except
Mohr-Coulomb
3. Linear Regression (in RocData) is only available for Hoek-Brown (intact lab
data) and Mohr-Coulomb
3
Measurement Units
RocProp Database
RocProp is a rock properties database program which is included with RocData, and runs
as a standalone application. RocProp currently contains over 600 test records of intact
rock properties from worldwide sources, including compressive strength, tensile strength,
elastic properties, Hoek-Brown parameters and velocity parameters. The database can be
searched and filtered in various ways, and allows users to add their own data to the
database.