APPENDIX A

A reserved value for a field to indicate “value unknown”. This typically should not be zero, as by convention that would mean that the value is definitely known to be 0.0. Typically for CAE Studio the absent value is defined as “-“ (missing value), and for Maptek Vulcan this is a user-defined large negative value like “-999”

This is the replacement value that SSO should use whenever the “Absent” value (q.v.) is encountered in an input field. E.g. for a model without voids, the value “2.5” might be supplied as the default Density field value, and this would be used whenever the Density field for a model cell is flagged as “-“ in CAE Studio, or say “-999” for Maptek Vulcan.

Refers to either the stope-shape strike extent faces (end walls) or the stope-shape vertical extent faces (roof or floor).

Describes the (local) model plane orientation that is used to discretise or split model cells to aid in the stope-shape annealing process. The Model Discretisation plane will be the same as the Stope Orientation plane except for the MODROT=4 case where the model plane closest to the Stope Orientation plane will be selected

Defines the relative rotation of the block model and the Stope-shape framework:

· Neither the block model nor the Stope-shape Framework are rotated (MODROT=1)

· The block model and Stope-shape Framework are both rotated, and have the same rotation definitions (MODROT =2).

· The block model and Stope-shape Framework are both rotated, and the axes are parallel but offset (MODROT =3). Note that this case also requires the rotations of model and framework to be identical

· One or both of the block model and Stope-shape Framework are rotated, but do not have equal rotation angles (MODROT =4).

A 4 sided polygon that describes the stope face profile in the UV coordinates of the Stope Orientation Plane. The polygon can be either a rectangle (for regular frameworks) or a trapezoid (where two sizes are parallel with the V-axis for irregular frameworks)

One of the values [XZ | YZ | XY | YX] which defines primary axes of the Stope-shape Framework in U and V, with U corresponding to the first axis and V the second, with a third axes W in the transverse direction to the UV plane. In the simplest case of an un-rotated XZ Stope-shape Framework, the axis equivalence would be U=X, V=Z and W=Y

A three dimensional rectangular volume that defines the volume of interest for stoping. Has equivalence with block model definitions, where a model can be orthogonal and aligned with the world XYZ axes. Alternatively rotated about an origin where the framework dimensions are in local coordinates relative to that origin. The Stope-shape Framework is further subdivided into Tube shapes (for the Slice Method) or Regions (for the Prism Method)

A three dimensional volume defined by the Quadrilateral polygon on the UV-axis of the Stope Orientation Plane and the extents of the framework in the W dimension