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Transcript of toq-corto-plazo2.pdf
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Corto Plazo and Ore Control Training
December 2006 Training
Toquepala - J. Lonergan
There are 4 main tasks (other than updating the pit topography) to be made:
Outline Blast Polygons Design Blasthole Pattern for each blast
Outline Weekly Shovel Cuts (Weekly plan) Outline Ore Control Cuts within each shovel cut
Following are step be step instructions to do each task.
Task 1. Outline Blast Polygons
Step 1. Display current pit topography toe, crest and ramp outlines to see activebenches.
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Step 2. Create a folder called Corto Plazo and a subfolder called Blast
Polygons.
In FolderBlast Polygons create a new geometry object called3325 CrestPh3. Set level in Plan Grid Setto 3325. Click Snap Polyline Snap and
Snap Plane Snap. (Note if Plane Snap is not active, click on Viewer
Properties Icon and click box Snap Edit Grid to Current Plane)
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Step 3. Digitize blast outline on 3325 level snapping to current crest
Step 4. Create a new Interactive Planner Object (IPO)called Blast
Plansin folder Blast Polygons
Fill in Panels as shown below:Select your Attributed Geometry Data Model (AGDM) for IP
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In General IP Set name is the same as the name of the IPO
IP Tool Area Tab
Save AS Toquepala
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IP Tool Material Sets Tab
(Note: Click Show Autoslicer Setup beforefilling in the panel)
Select Toquepalaas the Areaand Save As Mtype Routing
Click on Design Cuts
Step 5. Fill in IP Design CutPanels as shown below
Defaults Tab
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2D Cut Options Tab
Since we are using crest polygon at 3325 we must tell the program whichbench to sum tonnage on. Otherwise the program assumes the elevation of
the polygon is a toe elevation.
Attributes Tab Edit
Add a Drill attribute.
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Attributes Tab Add
Specify which data base custom attributes you want to use in your plan.
Scripts Tab
Select the Python scripts you want to use for reporting results. Accumulation
Scripts run with an Open Cut. Additional scripts run using the cuts listed inunder the Cuts Tab
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Step 6. Split the 3325 crest polygon into three Blast Polygons of 300,000
tonnes. Name them 3325001, 3325002, 3325003. Click Autoslicer Icon
on IP Cut Design Panel and fill in Panels as follows:
Main Tab
Target Tab
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Direction Tab
Naming Tab
ClickPreview and check results; then clickApply
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Step 7. Run Script ToqAGeom.py3 times to copy the IP cuts to geometry
object Limites Open each cut one at a time to do this.
Task 2 Design Blast Hole Pattern for each Blast Polygon in Object Limites,
We will use the second polygon in this example.
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Step 1: Open Object Limites
Step 2 ClickTools Blast pattern Editor and Open a new geometry object
called 3325002
Step 3 Fill in Panels as shown below:
Grid Tab
1. Use 3Digitizing Buttonsfor Origin, Orientation, and Extent of yellowoutline defining the rectangular limits for blasthole placement. Make sure
elevation is the crest elevation (3325) and make sure the rectangular
boundary covers polygonal area for 3325002 blast.
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2. Specify pattern dimensions under Size. Example shows values to enterfor a 10 x 10 triangular pattern. Check Clipping Boundaryand Clip
before numbering. This will restrict blasthole placement to the blast
polygon outline.
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3. Specify blasthole numbering scheme you want (may take someexperimentation) and click Preview
4. If correct, click Applyand Blasthole numbers and locations are entered inthe table on the panel.
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Adjust Tab
This Tab is used for the following tasks
add length to the blastholes adjust orientation (azimuth and dip) from default of vertical holes clip collars and/or toes of holes to triangulated surfaces.
You must first select (Edit Select All) the holes you want to adjust
Here is an example of adding depth to the holes:
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Note: The Drill adj Boxfor subdrill or underdrill only works when using triangulated
surfaces for lengths. In this case I have added a 1.5m subdrill to the total length of
the holes.
Line Fill Tab
This tab is used to add a trim line to the blast for a cleaner break at the face.
1. Close the Blast Pattern Editor and digitize a polylinewith a 2m offsetfrom the back of the blast. Use Snap Offset of 2m, Line Snap and
Plane Snap(3325 elev.)
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2. Re-open Blast pattern editorand fill in Line Fill Tabas shown below
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Select Polyline and in this example we will place blastholes every 3m along the line.
Click Preview
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If results are correct click Applyand the trim line holes are added to the table.
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Holes can be added, deleted and movedin the Viewer by clicking the appropriate
function under Viewer Tab.
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Changes can also be keyed in on the table by selecting the field and typing in your
changes.
Defaults tab
This tab is used to set-up more complex hole IDs and to export the pattern to a file
that is compatible with surveying in the blasthole positions in the field (GPS, Leica
Total Station, Wild, etc)
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Step 3: Tools Extrude Tool and open a new object called 3310-midline.
Select in viewer Polyline to extrude (new crest portion) and fill in Extrude panel as
shown below: (7.5 m down at a bench face angle of 70 degrees.)
Click Preview and if correct click Apply and Save.
Step 4 Green line is design portion of the midline polygon. Add the existing portion
by approximating the midline position from the current topography toe and crest
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lines. Use Polyline Appendand Polyline Close. Snap to Plane 3317.5
using a midline grid set.
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Step 5. Create a new Interactive Planner Object (IPO)called Weekly
Plan in folder Weekly Shovel Cuts
In first panelClone the settings of the previous IP set(Blast Plan)
IP ToolsPanels then appear with data entry items already filled in.
Click Design Cuts
Add a Pala attribute and deletethe drill attribute
Note: If Pala attribute does not appear in the list you must add it to the data-
base using the Editbutton.
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Step 6 Click Autoslicericon and set up the same as in task 1 but this time
use a target of 600,000 tonnes (4100 shovel production target for one week)and new names
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Apply
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Step 7. Run Mintec ScriptIP-Report.Py
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Step 7. Run Script ToqAGeom.py2 times to copy the IP cuts to geometry
object Pala1 -weekly Open each cut one at a time to do this.
Step 8. Run script ToqEqitor IP-Labelsto produce Minesight labels withshovel cut statistics
Task 4 Outline Ore Control Cuts within each Shovel Cut
Prior to outlining the ore control cuts, all blastholes for the shovel cut area
should be in the Acquire Database and the 3D Block Model should be updated
with the information from the blastholes.
At Toquepala this is done as follows:
Systema de Minais used to transfer assay results from the lab to ascii fileswith an extension of BHS (S2890.BHS, S3110.BHS, etc)
Acquire is used to load the information from the BHS files into the AcquireData-base.
Minesight Multi-run INT-Bancos is used to assign block grades from theblasthole information using IDW interpolation method. It also calculates
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solubility index and assigns a material code to item MTYPE based on copper
cut-off grades (MTYPE = 1 is desmonte, 2 is Leach, and 3 is Mineral). The
multi-run is run from Compass (Options Multi-run) The programs
(procedures) executed by the multirun are shown below:
Step 1: Display the midline weekly shovel cuts and the 3310 bench of the block
model. Display item = MTYPE (Brown = desmonte; Green = Leach; Red = Mineral)
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Step 2. Create a new folder Ore Control cutsand a new Interactive Planning
Object called Deciembre2006.
In first panelClone the settings of a previous IP set(Blast Plan)
IP ToolsPanels then appear with data entry items already filled in.
Check that the following grades are included on the IP Tool Area tab
TCU, MO, CUSA, CUCN, AS, FE, DENS, OTYPE, OXFE, RHI, ISO, PYCPY
Then clickDesign Cuts
Step 3. OnScripts Tab select following customized toquepala scripts
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OnAttributes Tab, Add followingattributes to the plan
Step 4. ClickDigitize Cut Icon and digitize a mineral cut for the pala:
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Report shows materials in the cut
Totals indicate this cut material should go to the mill. Therefore change Destino to
Mineral, assign a CutID (can also be done automatically see Default Tab), ans Save
the cut.
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Step 5. Run the following three scripts
ToqEtiq.py -- Creates a customized label for the cut
ToqDesp.py Creates files for use by Modular Dispatch software
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ToqAGeom.py -- exports cut outline to a Minesight geometry Object
Continue making material cuts for the shovel (mineral, leach, and desmonte). Run
all the scripts for each cut. Close IP Object and open Geometry object with labels
and cut outlines:
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