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Using Statistical Interpolation to Build Block Models – Part I(Introduction to MineSight® and importing and creating surfaces)
Using MineSight®©2007 Dr. B. C. Paul revisions 2009(Note – The Screenshots contained in this show are operating views of the MineSight® computer programs and the steps suggested for operating include ideas taken from Minetec operating manuals, courses, publications, or technical support advice)
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What and Why of Block Models
Today’s mine planning software represents ore bodies as three dimensional digital models made of uniformly sized blocks Blocks have the grade and other
characteristics average for the corresponding material believed to be in the field.
We need to use statistical techniques to project our sample information onto the Block Model
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Leading Mine Planning Software Programs
MineSight® – (master of the open pit metal mine) Probably most overall advanced and
complete Vulcan Gemcon/Mincom Carlson
Really an autocad add on for graphics and design
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Where Do You Start With a Project
Probably have a set of topographic maps Probably autocad digitized and
therefore importable to MineSight® Probably have collections of drill
hole data Again we’ll assume in computer form
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Getting Started with MineSight®
Pull up MineSight® on the Start / All Programs
Look forMineSight®3D
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Don’t Panic that Billy Doesn’t Know Mintec (tell it to run)
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Browse to Find Your Starting Folders(have topo and drill hole data in)
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Commentary Many of the 3D graphics features have a very windows
like feel to them Some of the routines run on data files run like old MSdos
and unix batch files Distinctly non-point and click flavor
Very specialized software – lacks base for a Microsoft windows It will crash easier than some of the one size fits all
programs you have encountered Doesn’t hurt to periodically save your work Program tries to save in a crash but don’t bet your sanity on it.
Routines can be quirky and demand exact sequences to avoid unexpected results.
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Needs Project Dimensions to Begin(so it asks you for the info it needs)
Needs to know whether you are in metric or imperial units
Also needs to know what coordinate limits youWill be using.
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Requires an Early Commitment on Block Size
Please note your project limits should be evenly divisible byYour block size!
Your Starter Set has the area and block size already input
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This is Where Your Work on Equipment Sizes and Bench Heights Come In
The Z dimension is your planned bench height Needs to correspond to a mining height
X and Y dimensions are usually similar to yield a near cubical block
Enter your data and click ok This creates a project control file that
sets the parameters for your project.
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What is MineSight®?
MineSight® is a suite of 3 programs A 3D graphics program called MineSight® A suite of operations that can be performed
on data – called compass A suite of data analysis programs
MineSight® development started with first computer routines in the 1970’s and list has grown since Collection includes everything from old
fortran routines to python program language routines
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Getting Our First Good Look at MineSight®
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Viewers are the Areas Where 3D Images and Views are displayed.
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Data Manager is Sort of a Windows Exploring for your project folders and files
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The First Task We Are Going to Do Is to Bring in our Topographic Map
When we make a block model we will have to be able to distinguish which blocks are air and which ones are rock We can’t do that without knowing
where the surface is. We remember our topography is in
a common DXF autocad type file Most topo maps are now available in
this format
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Set Up to Import DXF File
Point at theMain folder andLeft click the mouse(it turns blue –Meaning it has beenPicked)
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Click File on the Menu in the Data Manager to Drop Down a menu
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Tell the Program to Import a DXF file
Point theCurser atImport – noClick required –A side menuPops out.Move the curserOver DXF –It turns blueNow left click.
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Choose the DXF File to Import
This is a toughChoice sinceThere is onlyone
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The Layer Selection Box Opens
DXF files followThe AutocadConvention ofPutting differentThings onDifferent overlyingLayers(The menu hereAlso offers usChances toManipulateCoordinates which we are not concerned about here)
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Pick the Layers to Load
Point at the layersAnd left click –They will turn blue.(If you want toSelect more thanOne hold controlAnd left clickAdditional layers –Old windows trick)
Then point and leftClick load selected layers
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Oh Cool – Look What Appeared in My Viewer Window!!!
When I haveThe rightLayers in(worked for meFirst try) thenLeft click theX to close theLayer selectionBox.
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The Import Procedure Created It’s Own File in Which to Place The Data
It namedThe fileAfter a layerIn the DXFfile
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Actually We are about to see an inconsistency in MineSight
Sometimes MineSight routines require you to get files ready for the output
Sometimes MineSight creates them for you In this case MineSight created the file
for us. Now lets work with one where it won’t
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You Can Rotate and Turn the View by holding the Left and Right Mouse Button and Moving the Mouse
If you hold down theScroll knob and theLeft key you canZoom in and out
If you hold down theScroll knob and theRight Key you canPan back and forthAnd up and down
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3 D Modeling and Surfaces I can use my topography to build a 3 D
model for my surface It’s a nice visualization I will also use it as a basis later when I build my
block model or design my optimum final pit.
I start by telling computer what to use to make the surface (my topography obviously)
I’ll tell the computer to lay out points on the topo lines and then triangulate a wire frame from them
I’ll convert the wireframe into solid surface
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My Immediate Tasks
Create a new file for my surface Put that surface file into edit mode
so I can put my triangulated surface into it.
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Select the Directory Where I Will Put My New File
Point andLeft click
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Create My New Surface Object(nothing in it yet)
Click file to dropThe menu
Point to new toActivate pop-outMenu.
Point toGeometry objectAnd left click.
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I Named My new File / Object Topo Surface
Left click ok afterNaming theObject.
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Getting Ready to Put My New Object into Edit Mode
Left click my newObject(it turns blue)
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Right Click to Pop-Up a Menu
On the menuPoint to andLeft click edit toPut it in editMode.
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Note that the Open Edit Box has now moved to Our Topo Surface (That’s where the stuff we do will go).
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What Next?
Now I’m going to use the topo lines and create a wireframe triangulated surface.
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Now Select The Topo to Create A Surface
Highlight Topo(the file the importedData went into)
Right Click to Bring upMenu
Choose Select
On the side menuChoose all elementsBy left clicking.
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The Stuff that has been selected to work with turns red!
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Go to Surface on the Menu Tabs
Point theCurser toTriangulateSurface(a side menuPops out)
Point to withSelection andLeft click
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A MineSight Mercy Box Pops Up
Old versions ofMineSight would sendThe results to theOpen edit object(If you forgot to openThe right object forEditing you sent yourResults someplaceYou didn’t want them)
Improved versionAsks you to confirmWhere you want theWork to go. – LetsYou pick the rightObject.Since I never make a mistake I’ll confirm my
Open edit object as the destination and left click OK.
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It Creates a Wire-Frame Surface
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We Can Make A Regular Surface (Here is How!)
Right Click Topo SurfaceTo pull up a menu
Pick Properties
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Switch to a surface instead of wire-frame
It starts outWith theRadio buttonFor Wire FrameOnly
Left click onThe faces onlyRadio button
Then click OK
On the general tab
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Now I See A Triangulated Surface Instead
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Lets Consider some Clean Up
I probably don’t need to see the topo lines anymore Lets Turn them off
Lets Smooth out those triangulated faces a bit.
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The Topo Lines are in the Topo File
Click on theSave Edit Button
(It is a veryStrange lookingSave buttonCompared toWindows)
Another reasonTo do this isThat our topoLines are stillSelected(they are red)If we try toClose ourSelected lines we work with MineSight could be upset.
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Now Highlight Topo and Right Click It to Bring up a Menu – Pick Close
Note that this is a good reason for keeping objects is separate files so they canBe turned off and on with ease.
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Woopy – Now They Are Gone
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Now Lets Smooth That SurfaceSelect theTopography object
Right Click it for aMenu
Select Properties
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The Object Properties Window Comes Up
Left click on theTab at the topThat saysSurfaces
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Note the Smooth Shading Option on the Surfaces Tab Screen
Go ahead and check for smooth surfaces and then click Ok
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Now Isn’t That Smooth Surface Impressive?
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Ok – I Agree – Blue is a Strange Color for Mountains
HighlightTopo Surface
Right Click forA menu
Choose Properties
Go Back to Surface
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Note We Have A Color Control Area and Pallet
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This Color Pallet Works Like What You Are Familiar With
I think I will go for a brown
Click Ok
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I Got My Color Change
If I’m happyI will now okMy way outOf properties
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And Now I Have My Surface in My Choice of Colors