Slide is a 2D slope stability program for evaluating the safety factor or probability of failure, of circular or non-circular failure surfaces in soil or rock slopes. Slide is very simple to use, and yet complex models can be created and analyzed quickly and easily. External loading, groundwater and support can all be modeled in a variety of ways.
Slide analyzes the stability of slip surfaces using vertical slice or non-vertical slice limit equilibrium methods (e.g. Bishop, Janbu, Spencer, Sarma, etc). Individual slip surfaces can be analyzed, or search methods can be applied to locate the critical slip surface for a given slope. Deterministic (safety factor) or probabilistic (probability of failure) analyses can be carried out.
Critical surface search methods for circular or non-circular slip surfaces
Analysis methods include Bishop, Janbu, Spencer, GLE / Morgenstern-Price
Anisotropic, non-linear Mohr-Coulomb materials
Probabilistic analysis – calculate probability of failure, reliability index (see below)
Groundwater – piezo surfaces, Ru factors, pore pressure grids, finite element seepage analysis (see below), excess pore pressure (B-bar method)
Finite element groundwater seepage for steady state or transient conditions
Rapid drawdown analysis
Tension crack (dry or water filled)
External loading – line, distributed or seismic
Support – soil nails, tiebacks, geotextiles, piles. Infinite strength (slip surface exclusion) zones
Back analysis of required support force for a given safety factor
Back analysis of material strength using sensitivity or probabilistic analysis
View any or all surfaces generated by search
Detailed analysis results can be plotted for individual slip surfaces
Groundwater Analysis with Slide
Finite element groundwater (seepage) analysis, for steady state or transient conditions, is built right in to the Slide program. See the Groundwater Analysis with Slide topic for more information.
Probabilistic Slope Stability with Slide
Slide also has extensive probabilistic modeling and analysis features. Nearly all model input parameters can be defined as random variables, so that a probability of failure or reliability index may be calculated. Sensitivity Analysis can also be carried out. See the Probabilistic Analysis Overview topic for more information.