Grade Control Design
The following tables are optional.
Table Synonym Composition
| Synonym | Description |
|---|---|
|
grade_block_solid_points
|
Grade block triangulation data. |
|
string_header |
Grade block boundary polygon data. |
|
string_points |
Grade block boundary string data. |
|
poly_points |
Grade block polygon string data. |
|
grade_blocks |
Grade block data. |
|
block_model_grades
|
Reconciliation data. |
|
hole_collars |
Blast hole data. |
|
face_points |
Face point data (for display purposes only). |
Field Synonym Composition
| Synonym | Type | Compulsory |
|---|---|---|
|
Header table
The Easting, Northing and Elevation fields are responsible for storing the blast solid centroid information which is required for blast selection by polygon. The remaining report fields under the Header table, for example report_existing_easting, report_holes_easting etc., are used to store the position of the onscreen blast report. |
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|
blast_solid_points
|
|
|
|
blast_solid_tris
|
|
|
|
grade_block_solid_points
|
|
|
|
grade_block_solid_tris |
|
|
|
string_header string_nostring_type |
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|
string_points
|
|
|
|
poly_points
|
|
|
|
grade_blocks
The volume field is used for optional volume storage. The Easting, Northing and Elevation fields are used for grade block centroids, while the Easting_user, Northing_user and Elevation_user fields are used for user-defined centroids (label positions) The remaining report fields under the Header table, for example report_existing_easting, report_holes_easting etc., are used to store the position of the onscreen blast report. |
|
|
|
face_points
|
|
|
|
hole_collars
If the InterceptDepth field is not provided, then all depths will default to zero. If a Bearing field is not provided, then all hole bearings will default to zero (north). The Bearing field is not required for vertical holes. If an Inclination field is not provided, then all holes will default to vertical (pointing down). |
|
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|
block_model_grades
The volume field is used for optional volume storage. |
|
|
|
block_model_grade_blocks
The volume field is used for optional volume storage. |
|
|
- Additional sample fields can be specified through using the Edit Configuration option.
- Table and field names are arbitrary - only synonyms are used.
- Not all tables are compulsory for a blockout estimation method to be valid.
-
In order to store triangulations,
_pointsand_tristables must both be present. -
In the
block_model_grade_blocks, block_model_grades and grade_blockstables thevolumevariable, although not compulsory, will store volume when specified. Therefore, do not use volume to represent a different variable. Similarlydepth, bearing and dipall represent depth, bearing and dip. You can, however, use rules to specify the values. -
The
string_headertable must be present in order to use a polygon with the Create Grade Blocks option. If the table is not present, then there is no way for Grade Control to designate a string as a line or a polygon.