The lack of data input on soil and rock mass properties can be a major obstacle when you’re running your geotechnical analyses. RocData helps to remedy this situation by providing analysis tools and data to help you determine rock and soil material properties.
RocData can be used to determine the parameters of linear and non-linear strength envelopes for rock and soil, based on the analysis of triaxial or direct shear strength data. RocData utilizes four of the most widely used strength models in geotechnical engineering - Generalized Hoek-Brown, Mohr-Coulomb, Barton-Bandis, and Power Curve.
Failure envelopes are plotted in both shear-normal and principal stress space. Shear-normal stress envelopes generated by RocData can be applied to problems such as limit equilibrium analysis of slope stability, while the principal stress envelopes can be used for modeling the behaviour of underground excavations. RocData is a highly interactive program that allows users to easily test different strength parameters and observe how they impact a failure envelope, giving users a better understanding of material strength.
The material strength properties determined by RocData can be used as input for numerical analysis programs such as RS2 (finite element stress analysis and support design for excavations) and Slide2 (limit equilibrium slope stability analysis).
RocData includes RocProp, a database of intact rock properties that runs as a standalone application. RocProp contains over 700 test records from credible sources, including compressive strength, tensile strength, elastic properties, Hoek 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.
Strength criteria include linear Mohr- Coulomb and non-linear Generalized Hoek-Brown, Barton-Bandis and Power Curve. These can be applied in the analysis of intact rock, rock mass, soil or discontinuity (joint) strength data. RocData is highly interactive and allows you to easily test different strength parameters and observe how they impact a failure envelope. Input parameters can be estimated from builtin charts and tables. Equivalent Mohr- Coulomb parameters are calculated for non-linear envelopes.
Strength test data from triaxial or direct shear tests can be entered to determine the “best fit” strength envelope and associated parameters (e.g. cohesion and friction angle) for a rock or soil. The data can be obtained from lab tests of intact samples, or field data from insitu rock mass tests. Failure envelopes are plotted in both shear-normal and principal stress space. RocData results can be used as input for numerical analysis programs such as Slide2 or RS2.
RocData now includes RocProp, a database of intact rock properties which currently contains over 600 test records from worldwide sources. The data includes rock type, geographical location, compressive and tensile strength, elastic properties, Hoek-Brown parameters and velocity parameters. The database can be searched and filtered in various ways, and allows users to create charts, generate statistical information, and add their own data in a user database.
Strength Criteria
Stress Units
Analysis of Test Data
Failure Envelope Plots
Estimating Input Parameters
Additional Output Parameters
Equivalent Mohr-Coulonb Parameters
Exporting Results
RocProp Database
