Default Pit Attributes
Function
When timing the pits, there are additional attributes that will be
calculated and reported in addition to the Non-Key and Key quantities.
If these are defaults that should be applied to all the pits, then they
should be entered here. It creates a PTA file which may be specified in
the Mining Project Manager. Any quality values, density, or difficulty
attributes can be defined here either just as a value, or as a grid
file with varying values. The Default Pit Attributes window shows what
is defined for defaults, the second window, Reserved Attribute Names,
displays the reserved words that will be recognized in the timing
routines, and how they should be entered in. Selecting Keywords Help
brings up the Reserved Attribute Names. Save and Load will create and
load the PTA file for future use.
The Reserved Attribute Names are defined in a little more detail here:
- THICKNESS: Key strata thickness: Will report any other thickness
values, this is used mostly for underground timing.
- DENSITY: Key strata density: Will report Key density, is used
mostly in
underground timing to calculate the tons. In surface timing, the tons
are already in the pits.
- ROCKTHICK: Non-key strata thickness: Reports the Non-Key
thickness
mostly for
underground timing.
- ROCKDENS: Non-key strata density: Reports the Non-Key density
mostly
for
underground timing.
- TIMEGRID: User-defined grid to use for timing: This will be any
additional grid the user would like to add for reporting.
- DIFICULTY: Difficulty factor on advance just for underground
timing:
This
will alter the underground equipment rate on advance.
- RET_DIFF: Difficulty factor on retreat for underground timing:
This
will alter the underground equipment rate on retreat.
- DIFF_BENCH*: Difficulty factor for bench * for surface timing:
This
will speed up or slow down the equipment as it mines the specified
bench. If a value is above 1, such
as 1.2, then it will mine 20% slower at that point in the grid, or
everywhere if it is set to value. If it is less than 1, such as 0.84,
then it will mine 16% faster at that point.
- XXXX_BENCH*: This is the dominate attribute that is most widely
used in
this command for surface pits. All quality grids will be defined in
this fashion, for
each bench. The example above, BTU_BENCH1, is defined in this way. All
quality parameters need to be entered as the NAME_BENCH*.
Pulldown Menu Location: Boundary in Advanced Mining
Keyboard Command: editpitattr
File Name: \lsp\mineutil.arx
Related Commands: Edit Pit, Mining Project Manager