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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toq-corto-plazo2.pdf

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