Void Ratio

The Void Ratio window allows users to calculate and visualize Void Ratio using the Mine Geometry Model (MGM). This analysis provides spatial context for excavation intensity and rock mass removal around grid points or minodes.

Void ratio analysis provides critical context for interpreting seismic and deformation-related parameters by accounting for excavation-induced rock mass removal around the area of interest.

Void Ratio Calculation

The void ratio is calculated as:

Void Ratio = Void Volume / Rock Volume

Void volume is derived from Mine Geometry Model steps, while rock volume is calculated within a defined cubic volume surrounding each grid point or minode.

Void Controls

Void ratio calculations are configured using the following controls:

• Grid Generation Distance
  Defines the maximum distance from the Mine Geometry Model at which grid points are generated for void ratio evaluation.

• Cube Width
  Specifies the edge length of the cube centered on each grid point or minode. This cube defines the volume over which void and rock volumes are calculated.

• Calculate Minode Void Ratio
  Enables void ratio calculation directly at minode locations by creating a cube around each minode and applying the same void-to-rock volume calculation process.

Visualization

Void ratio results can be visualized using multiple methods:

3D Visualization

Void ratios at grid points and minodes are displayed in:
Void Ratio → 3D Views

Marker range overrides can be adjusted via:
Void Ratio → Panels → Void Controls
to improve contrast and interpretation.

Surface Visualization

Void ratio results can also be visualized by painting values onto selected surveys and or mine geometry mode.

Access these options under:
Void Ratio → Panels → Surfaces

observação

Survey-based visualization uses minode-derived void ratio results, not grid-based results.