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EX3

EX3

EX3 is an engineering analysis software program for underground rock structures. It includes modules for geometric modeling, surface meshing, elastic stress analysis based on the boundary element method, and data visualization/interpretation.

EX3

Applications

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EX3 (formerly Examine3D) is the newly revamped stress analysis software for quickly analyzing large, complex 3D underground models. EX3 uses the Boundary Element Method (BEM) – an efficient approach to elastic stress analysis that requires simpler discretization and meshing, since only surface meshes are implemented. The program comes with several exciting features including 3D modeling, geometry import and creation, geometry repairs tools, multiple staging for excavation and backfill, automatic surface meshing, and creation of field points for stress computation.

EX3 includes several innovative new tools including an improved surface meshing feature that lets users define mesh more precisely around areas of interest. It also includes a new “Grouping” function to help analyze mining sequences by allowing users to define the model with sequential stopes much easier.

With its combination of speed and simplicity, EX3 is the ideal tool for quickly performing complex stress analyses of underground mines.

Software Screenshots

Figure 1 - Modeling of complex geometries
Figure 1 - Modeling of complex geometries
Figure 1 - Modeling of complex geometries
Figure 2 - Deformation vector for excavated region
Figure 2 - Deformation vector for excavated region
Figure 2 - Deformation vector for excavated region
Figure 3 - Stope excavation analysis for multi mining scenarios with backfills
Figure 3 - Stope excavation analysis for multi mining scenarios with backfills
Figure 3 - Stope excavation analysis for multi mining scenarios with backfills
Figure 1 - Modeling of complex geometries Figure 1 - Modeling of complex geometries Figure 2 - Deformation vector for excavated region Figure 2 - Deformation vector for excavated region Figure 3 - Stope excavation analysis for multi mining scenarios with backfills Figure 3 - Stope excavation analysis for multi mining scenarios with backfills

Applications

Product Highlights

  • What’s New in EX3
  • Model Creation
  • Boundary Element Method
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What’s New in EX3

  • Full 3D model geometry creation
  • Powerful import from all types of surfaces
  • Embedded multiple staging
  • Ability to model joints with three different failure criteria

Model Creation

The Modeler Interface consists of several features that allow for graphical data entry and editing:

  • four view windows, each giving a different view of the model (top, front, side, perspective)
  • a menu bar at the base of the two bottom windows; and
  • an information bar at the bottom of the screen.

Additional modeling functions include:

  • The Skin function, which wraps a skin of boundary elements around two or more polylines. Users have the option to specify mesh density and discretization.
  • The Extrude function is used to generate the geometry and boundary mesh for a structure that has a uniform cross-section.
  • The Face function is the most versatile among the mesh generator functions; however, unlike the skin and extrude functions, Face does not generate geometry. It is simply a mesh generator, suitable for discretizing any region bounded by one or more nodelines.
  • AutoCAD DXF Import / Export: EX3 can import DXF and export GEO files, allowing users to quickly switch between applications.
  • EX3 provides three automatic meshing/remeshing functions: Array Mesh, Radial Mesh, and Automatic Mesh. All three functions require no user input to generate a mesh.
  • EX3 allows users to quickly calculate the volume and surface area of an object.
  • Automatic Geometry Validation: The object check function is used to assure that the geometry is valid.
  • The Distance Measuring function is used to both locate a point in your three-dimensional modeling space and to determine a distance to some other user-defined point.
  • Pressure Boundary Condition: The apply traction function allows users to apply pressure or traction boundary conditions to excavations or ground surfaces. Users can specify the region of the pressure, its magnitude and direction.
  • The Geometry Slicer option is used to generate the intersection polyline between the current three-dimensional model and a user supplied cutting plane.

Boundary Element Method

EX3 is our only software solution based on the boundary element method (BEM). BEM is considered efficient for modeling faulted rock; often more efficient than the finite element method. BEM often requires less computational effort by introducing a "mesh" over the modeled surface, rather than the volume discretization required for the finite element method. By analyzing and computing only the surface area of the desired model, as opposed to the full volume, users can save time and effort when using EX3.

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