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3D Limit Equilibrium Analysis for Slopes

Powerful Failure Surface Searching

Locate critical failure surfaces and compute the correct factor of safety using a combination of global metaheuristic search methods and local surface altering technology. With parallel processing added for both failure searching and FS computations, results can now be generated within minutes.

Integration with Radar Data

Streamline your workflow and get more detailed insights by integrating 3D wireframes (representing surveyed topography, geological surfaces, modelled faults, etc.) directly into your 3D models.

3D Model Creation – Point cloud, LiDar, Leapfrog

Constructing slope stability models is easier and faster than ever before. Import surfaces from geological modelling or mine planning software or use built-in surface construction methods using coordinates or borehole data. Choose to build surfaces from point cloud data or import block models from applications such as Leapfrog, Deswik, Datamine, and Vulcan.

Features in Slide3

Technical Specifications

3D Slip Surface Shapes

  • Spherical
  • Ellipsoidal
  • Spline Surface
  • Composite

Advanced Features

  • Excess Pore Pressure
  • Rapid Drawdown Analysis
  • Unsaturated Shear Strength
  • Anisotropic Regions
  • Tension Cracks

Analysis Methods

  • Bishop
  • Janbu
  • Spencer
  • GLE with intercolumn force function


  • Very fast compute engine
  • Metric or imperial units

Data Interpretation

  • View 3D global minimum slip surface
  • View all slip surfaces
  • View contour plots of analysis data on
    slip surface (e.g. stress, strength, pore
  • View safety maps on the surface of
    the model or on cutting plane through
    your model
  • Show support forces
  • Data tips for any object
  • Annotation and dimensioning tool kit
    Export to Excel
    Export image fi les


  • Point loads
  • Distributed loads (uniform or variable)
  • Seismic loads


  • Create 3D models with CAD tools
  • Import 3D surfaces with .dxf, .dwg, .obj,
    .stl, .step, .iges, .tin, .asc, .xyz fi les
  • Borehole data entry
  • Construct geometry profile from
    borehole data
  • .dxf import/export
  • One-click material assignment
  • Import RS3 fi les
  • Import 2D to 3D (Slide2 or RS2)
  • Export 2D planar section (Slide2 or RS2)
  • Right-click editing shortcuts
  • Interactive sidebar
  • Slope wizard (create simple slope
    models with a few mouse clicks)

Pore Pressure Definition

  • Water surfaces (water table or piezo line)
  • Water pressure grids
  • Ru coefficients
  • Import pore pressure grids from RS3
    Search Methods
  • Auto-refi ne search
  • Cuckoo search
  • Grid search
  • Particle Swarm
  • Surface Altering Optimization
  • Automatic 3D failure direction
  • Slope limits (inclusion or exclusion zones)
  • Surface filter options

Seismic Options

  • Pseudo-static analysis
  • Staged pseudo-static analysis

Strength Models

  • Mohr-Coulomb
  • Undrained
  • Infinite Strength
  • Anisotropic Strength
  • Shear/Normal Function
  • C/Phi Function
  • Generalized Hoek-Brown
  • Vertical Stress Ratio
  • Barton-Bandis
  • Power Curve
  • Hyperbolic
  • Discrete Function
  • Drained-Undrained
  • Generalized Anisotropic


  • Active vs. passive anchors
  • Easily define/edit patterns
  • End-anchored bolts
  • Geotextiles
  • Grouted tieback
  • Grouted tieback with friction
  • Piles and micropiles
  • Soil nails
  • User-defined

Slide3 across Applications

Slide3 contains features such as rapid drawdown, complex pore pressure distributions, many non-linear material models, and unsaturated strength, that make it suitable for the modeling of dams and embankments. It has been used extensively on both hydroelectric and tailings dams. The ability to easily link to RS3’s powerful steady-state and transient groundwater analyses means it can account for any possible pore pressure conditions.


Slide3’s extensive support library makes it easy to model retaining walls. Support can be defined individually or through user-defined support patterns. Geogrids can also be easily added to a model using an Excel import facility. This allows for hundreds of individual geogrids to easily be defined.

Slide3’s ability to import surface, point cloud, and block model data make it extremely easy to construct open-pit slope models. Built-in display of radar displacement data, in conjunction with surface safety maps, make it a comprehensive tool for monitoring and calibrating pit wall stability problems.


Slide3’s design was engineered to be equally applicable to both rock and soil slopes. It has a complete material library of both rock (Mohr-Coulomb, Generalized Hoek-Brown, Barton Bandis, Anisotropic etc.) and soil (Mohr-Coulomb, SHANSEP, Vertical stress ratio, Power Curve, Shear-Normal, etc.) material models. Slide3’s large support library is also applicable to both rock and soil.

Explore the latest features in Slide2

The Spline Search method provides you with greater flexibility for capturing complex failure mechanisms. Transform the shape of a slip surface, accurately define the shape of the failure surface, and identify the correct FoS in your geometry.


Designed to provide you with accurate topography for geometry creation, with the Terrain Generator, directly import terrains together with their textures from satellite maps. Compare & verify the accuracy of your failure surface with the drone-captured image.

Using the multi-section creator, you can create multiple 2D Slide2 sections in Slide3 while running a 3D analysis. View the different 2D sections and their failure surfaces while comparing them with your 3D analyses at the same time.

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