Description |
Swedge (5.0) is an interactive analysis tool for evaluating the geometry and stability of surface wedges in rock slopes. Wedges are defined by two intersecting discontinuity planes, the slope surface and an optional tension crack. It provides an integrated graphical environment for data entry and 3D model visualization. Rock bolts, shotcrete or support pressure can be applied to increase the wedge safety factor. Support capacity for a required factor of safety can be determined. De-stabilizing forces due to water pressure, seismic loads or external forces can also be modeled. Joint shear strength options include Mohr-Coulomb, Barton-Bandis and Power Curve models, and a joint waviness angle can be defined. Analysis methods include Deterministic, Probabilistic, Combinations, Sensitivity, and Persistence analysis. For a Deterministic analysis, it computes the factor of safety for a specific wedge. For a Probabilistic analysis, statistical distributions can be defined for input data and a probability of failure is calculated. For a Combination analysis, any number of joint planes can be defined, and all possible combinations of joint intersections which can form a wedge are analyzed. Sensitivity analysis allows you to determine the effect of individual variables on safety factor. It provides improved integration with the Dips stereonet analysis program. A complete Dips file can be imported and analyzed with the Combination analysis option; or statistical joint set information (Fisher Distribution) can be imported for a Probabilistic analysis. Results can be plotted on histograms, cumulative, scatter, stereonet and sensitivity plots, and exported to other programs. |