Description |
RocData (4.0) is a toolkit for the analysis of rock and soil strength data. Strength envelopes and other physical parameters (e.g. deformation modulus) can be determined. Strength criteria include linear (Mohr-Coulomb) and non-linear (Generalized Hoek-Brown, Barton-Bandis and Power Curve) criteria. These criteria can be applied to the analysis of intact rock, rock mass, soil or joint (discontinuity) strength data. Strength envelopes can be obtained by curve-fitting of data from triaxial or direct shear strength tests. Curve fitting methods include Levenberg-Marquardt, Simplex or Linear Regression. Equivalent Mohr-Coulomb parameters are calculated for non-linear envelopes over a specified stress range. Failure envelopes are plotted in both shear-normal and principal stress space, and are interactively updated as input parameters are changed, allowing the user to observe the effect of individual parameters on the shape of the envelope. Shear-normal envelopes 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. It 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. |