Defining OrebodiesDefining Orebodies

©2012 Dr B. C. Paul©2012 Dr B. C. Paul

Note – These slide contain screen shots from the program MineSight by Note – These slide contain screen shots from the program MineSight by Mintec. Credit is given to Mintec for the program. Topics covered in the slides Mintec. Credit is given to Mintec for the program. Topics covered in the slides

may also be covered in Mintec training courses though no courses were may also be covered in Mintec training courses though no courses were explicitly copied for these slides.explicitly copied for these slides.

This time I will do a from Scratch This time I will do a from Scratch ProjectProject

On the Splash Screen I select browse and then in my chosen directoryI do a Make New Folder and Name it Demo.

It Will Ask to Set Up MineSight It Will Ask to Set Up MineSight Resource Folders in the DirectoryResource Folders in the Directory

Say Yes

Next it wants to know what area Next it wants to know what area the Project Coversthe Project Covers

My Assumed Work AreaMy Assumed Work Area

0,0

4500 ft

6000 ft

Units in Feet

Putting Things InPutting Things In

I pick units of feet and put in my area and then click OK

Now We Are Set to GoNow We Are Set to Go

What I’m Going to DoWhat I’m Going to Do

Assume I have a dippingOrebody. I’m going to traceThe shape of thet orebodySystematically on differentLevels.

The Wild PlineThe Wild Pline

• My first impulse is to just draw the My first impulse is to just draw the orebody borders with closed Plinesorebody borders with closed Plines

• MineSight is a true 3D program.MineSight is a true 3D program.• How do I know I am tracing the orebody at How do I know I am tracing the orebody at

a fixed elevation.a fixed elevation.• (You might find it out the hard way that (You might find it out the hard way that

lines just drawn in freespace can really be lines just drawn in freespace can really be very free in space).very free in space).

Enter – The Gridset / And Friend Enter – The Gridset / And Friend the Edit Gridthe Edit Grid

It is a planer grid thatCan be set up any wayIn space to confineDrawings to a plane.

I created a Gridset FolderAnd then selected toCreate a New Gridset

I’m Naming My Gridset – I’m Naming My Gridset – Horizontal PlanesHorizontal Planes

I will then click Ok

My Gridset ControlMy Gridset Control

My sets will bePlaner

They will start atThe origin –Be the size of myProject

And there will beA set of 77 planesSpaced every100 ft.

A Dense Picture of Gridsets A Dense Picture of Gridsets AppearsAppears

My StrategyMy Strategy

• I will set the grid set to control the I will set the grid set to control the displaydisplay

• Then I will select the level I want to Then I will select the level I want to draw ondraw on

• Then I will move to 2D drawing confined Then I will move to 2D drawing confined to a planeto a plane

• I will then snap an Edit Grid onto that I will then snap an Edit Grid onto that PlanePlane

• I will then set snap mode to snap what I will then set snap mode to snap what ever I draw to that planeever I draw to that plane

The Little Green Box Is Used to The Little Green Box Is Used to Have a Gridset Control the Have a Gridset Control the DisplayDisplay

Click on it.

A Directory Pops Up for You to A Directory Pops Up for You to Pick the GridsetPick the Gridset

Select My Edit Grid and Click OkSelect My Edit Grid and Click Ok

The Little Blue List Box Will Let The Little Blue List Box Will Let Me See All the Elevations I Can Me See All the Elevations I Can ChooseChoose

There is the Plane I Want to There is the Plane I Want to Work WithWork With

I will click on it.

Using the Viewer ControlsUsing the Viewer Controls

Note that the controlling elevationHas been specified.

I will now select a 2DView mode(which will put me in the6800 elevation plane)

There is the Single Grid and We There is the Single Grid and We Are Now Seeing Things in Only Are Now Seeing Things in Only One PlaneOne Plane

I Will Go to My Edit Grid Select I Will Go to My Edit Grid Select ButtonsButtons

More specifically the one that allows me to select the current planeOf my gridset to form my edit grid.

Click it then click my gridset in the viewer

Setting An Edit GridSetting An Edit Grid

Click the Edit Grid to MakeThat one plane controlThe viewer

Note that when the GridsetIs turned off I now seeThe edit grid.

Now Set Snap Mode to Plane Now Set Snap Mode to Plane SnapSnap

This will cause the lines IDraw to snap to theCurrent plane (which is myEdit grid at 6800 feet)

The Box Tells Me My Current The Box Tells Me My Current Snap Mode is to a PlaneSnap Mode is to a Plane

I’ll Set Up My Files to Hold My I’ll Set Up My Files to Hold My Orebody ContoursOrebody Contours

I created a file called Orebody

Within that file I created a “geometry object”To hold orebody contours

I set the orebody contours into edit mode.

Now I Will Give the Order to Let Now I Will Give the Order to Let Me Draw a PlineMe Draw a Pline

Note that since I know this polyline will be closed I am telling it to letMe draw the polyline as a polygon.

After I Draw My Polyline I Right Click After I Draw My Polyline I Right Click My Mouse to Signal I Am DoneMy Mouse to Signal I Am Done

The line turns red (the default for theLine is complete but has not beenSaved).

I Click on MineSight’s Funky I Click on MineSight’s Funky Save IconSave Icon

The saved contourLine now turnsBlue.

Click on the “Spill Your Guts” Click on the “Spill Your Guts” Icon – Then click the plineIcon – Then click the pline

Ok – MineSight calls it the Query Button. YouCan use it to check the properties of any Geometry object.

Note the Query Result Shows Every Note the Query Result Shows Every Point of the Polyline is at 6800 feetPoint of the Polyline is at 6800 feet

I did avert theProblem ofPlines jumpingUp and downTo differentElevations in3D.

After Repeated Efforts I End Up With After Repeated Efforts I End Up With My Contour Lines Around the My Contour Lines Around the Orebody at various elevationsOrebody at various elevations

An Alternative to Edit Grids for Fast Work

Assuming I want to put a line at a fixed elevation in a horizontal plane.

First get into a horizontal plane – click the horizontal plane icon.

Now Go For the Viewer Now Go For the Viewer Properties IconProperties Icon• The Set Camera Target TrickThe Set Camera Target Trick

Click on the ViewerProperties Icon

Select the Camera Tab in the Viewer Properties Window

Set the elevation of the cameratarget to the elevation you wantto work with. (I’m going to set2900).

Then click apply.

Now I Will Draw a Polygon

I’ll Put in a Twisted Line Sure to Create Elevation Confusion.

But Wait! With the Camera Target Trick Everything Goes in at a Fixed Elevation.

(The fixed elevation is the one you set with the camera target)

Back to My Main Story - Defining Back to My Main Story - Defining an Orebodyan Orebody

• I previously triangulated between I previously triangulated between contour lines of elevation and created a contour lines of elevation and created a surfacesurface

• I can similarly link these contours to I can similarly link these contours to form a shell around my orebodyform a shell around my orebody• I will use the “Linker Tool”I will use the “Linker Tool”

Of Course I Will Set Up My Of Course I Will Set Up My Geometry Object in Edit Mode for My Geometry Object in Edit Mode for My DrawingDrawing

The Linker Tool is Accessed Via The Linker Tool is Accessed Via the Icon with Links in a Chainthe Icon with Links in a Chain

Once Accessed A Menu Pops UpOnce Accessed A Menu Pops Up

The Links Button Indicates How The Links Button Indicates How the Lines to Link are Selectedthe Lines to Link are Selected

You can select links oneAt a time

You can drag a box around a bunch ofLines to link all at once

Of Course the Box Drag will Get Of Course the Box Drag will Get Things Put Together FasterThings Put Together Faster

But Wait! – We may want to consider a bit about how this thing works

Linker Connects node points in Linker Connects node points in the order and direction of the order and direction of creationcreation

1

1

But What Happens If You Did the But What Happens If You Did the Plines in Opposite Directions?Plines in Opposite Directions?

Oouch! – It crosses itself like aMutant bowtie.

We Cure This By Checking Line We Cure This By Checking Line DirectionDirection

To do this we start bySelecting the line we wantTo review.

Click on the Target LineClick on the Target Line

It turns orange

Right Click Your Mouse to completeThe selection.

Now It Turns Red – It is Selected Now It Turns Red – It is Selected and Ready for Study and and Ready for Study and ModificationModification

Using Menus go for Polyline / Using Menus go for Polyline / Redefine / DirectionRedefine / Direction

Here is My Buzzard! – It was Here is My Buzzard! – It was digitized counter-clockwise.digitized counter-clockwise.

Note the arrows pointTo the order in whichPoints of the line wereDigitized.

First Click ReselectFirst Click ReselectThen click the line

Then right click toComplete thereselection

Now click apply to reverse the directionOf the line.

(note – don’t forget toRight click toComplete the selection –Otherwise the applyAnd preview buttons willBe grayed out becauseMineSight is waiting forYou to finish yourReselection)

Positively Butimouse – Now its Positively Butimouse – Now its Digitized Clockwise.Digitized Clockwise.

Now If I Use the Linker I Get Now If I Use the Linker I Get Something RealisticSomething Realistic

What Happens if the Starting What Happens if the Starting Points for the Polylines Don’t Points for the Polylines Don’t Line Up?Line Up?

Wow – Its Twisted Man!!

What To Do About This ProblemWhat To Do About This Problem

This time I will select aSet of lines to checkOut.

I’m Going to Redefine the I’m Going to Redefine the EndpointsEndpoints

I Can See My Rotten Apple Point I Can See My Rotten Apple Point that is Out of Placethat is Out of Place

Note where the otherEndpoints are.

Simply Mouse Click Where I Simply Mouse Click Where I Want the Endpoint to BeWant the Endpoint to Be

While I Have All Those Lines Selected While I Have All Those Lines Selected I’m Going to Check DirectionI’m Going to Check Direction

Oh No – We Have One Line Oh No – We Have One Line Going the Wrong Direction!Going the Wrong Direction!

Now For the Mystery of the Now For the Mystery of the ReselectReselect

Didn’t it seemAnnoying that wePicked a line,Checked it, andThen had to pickIt again to changeIt?

Oh – But There is a Reason!Oh – But There is a Reason!

We have just been checkingOut a bunch of lines all atOnce. Now we find we haveOne line going the wrongDirection.

We can now pick only oneLine out of the set toChange.

Click reselect and thenClick the offending line.

We Can Fix Just One Line in a We Can Fix Just One Line in a Set.Set.

It lets us work with a bunch ofObjects at once. And thenJust pick one to adjust. It is aKey stroke saver for bigProjects.

What we did1- Hit reselect2- Click the line3- Right Click the mouse toComplete the selection4- Click the Apply Button.

Lets Save Our ChangesLets Save Our Changes

Click Save.

Sometimes you want to doSomething and all yourNeeded menus seem to beGrayed out. Look to see ifThe save box is lit up! If it is,Try clicking to save.(Minesight sometimes won’tLet you move on till you saveYour work).

Now We Can Link Some Stuff Now We Can Link Some Stuff Together.Together.

What Happens if One Line Has a What Happens if One Line Has a Lot of Points and Another Only a Lot of Points and Another Only a Few?Few?

It will try to ratio points an link the few toMultiple points – sometimes its Ok, but it can also create some ugly twists locally

Oh Ya – There is an Ugly TwistOh Ya – There is an Ugly Twist

We Can Densify the Points on a We Can Densify the Points on a LineLine

Note that I previouslySelected thisPolyline as the oneI wanted to work with.(If I had note madeA selection theDensify option wouldBe grayed out on theMenu).

After Doing the Reselect Thing I After Doing the Reselect Thing I Can Specify My Point IntervalCan Specify My Point Interval

And then apply

Uniformly Dense Lines Starting in the Uniformly Dense Lines Starting in the Same Area and Running in the Same Same Area and Running in the Same Direction Often Produce Good ResultsDirection Often Produce Good Results

Interesting FactInteresting Fact

Our orebody shell is still madeOf pieces found betweenIndividual contour lines

We can merge all those piecesInto one orebody shell.

Select All the Pieces that We Select All the Pieces that We Want to MergeWant to Merge

1- On the SelectionMenu I chose to makeA new selection.

2- Then I clicked onEach piece of theOrebody shell

3- Then I right clickedMy mouse andEverything turned redAs in this picture.

Next I Will Merge My Selected Next I Will Merge My Selected ElementsElements

After That If I Click to Select My After That If I Click to Select My Orebody Shell I Get the Whole Orebody Shell I Get the Whole ThingThing

Sometimes Part of an Orebody is Sometimes Part of an Orebody is Eroded AwayEroded Away

Sometimes we just want to define how an orebody intersects the surface

I Will Prepare a New Open Edit I Will Prepare a New Open Edit Geometry Object for My ResultGeometry Object for My Result

Since I’m going to clip the orebody at the surfaceI chose to call it Clipped Orebody

I Will Use the Intersect Surfaces I Will Use the Intersect Surfaces ToolTool

The Dialog Box Wants Me to The Dialog Box Wants Me to Identify the Surfaces I Will UseIdentify the Surfaces I Will Use

The blue worm means I willSelect the surface in the viewer

The red dot box means I willPick an entire geometryObject with the DataManager.

I Click the Blue Worm for My I Click the Blue Worm for My Primary SurfacePrimary Surface

Then I click my topographic surface

When I right click the mouse the selection completesAnd is entered in the dialog box. (and also surroundedBy a blue box).

I Use the Same Method to Select I Use the Same Method to Select the Orebody Shell as My the Orebody Shell as My Secondary SurfaceSecondary Surface

I Set What I Want to Do In the I Set What I Want to Do In the Dialog BoxDialog Box

The secondary surface will be affected

I want the portion below the Primary Surface

I Do a Preview to make sure I got what I reallyWanted.

When I Click Apply It Asks Me When I Click Apply It Asks Me Where I Want to Send The Where I Want to Send The ResultResult

I will of course choose the open edit object I prepared forThat purpose and then click OK

Looking At My Clipped Orebody I Looking At My Clipped Orebody I See I Got What I Wanted.See I Got What I Wanted.

A Nice Little Display TrickA Nice Little Display Trick

On my toposurfaceI right click in theData Manager toDrop down aMenu

From the menuI select Properties

I Click theSurfaces Tab

I Will Check for Transparent I Will Check for Transparent FacesFaces

As I set the percentage (using the arrow)I can see the result.

When I’m happy I click Ok

Now For Your AdventureNow For Your Adventure

• Assignment #3Assignment #3• Get the starter contour lines file from the Get the starter contour lines file from the

instructorinstructor• Use the linker tool to link the contour lines Use the linker tool to link the contour lines

around the orebody to make an orebody around the orebody to make an orebody shellshell• Take a screen shot of your resultTake a screen shot of your result

• Use the Surface Merge Tool and Make the Use the Surface Merge Tool and Make the Orebody shell into a single objectOrebody shell into a single object• Set it to show only the facesSet it to show only the faces• Take a screen shotTake a screen shot

Assignment #3 ContinuedAssignment #3 Continued

• Turn on the topo surfaceTurn on the topo surface• Create a new geometry object for the clipped Create a new geometry object for the clipped

orebodyorebody• Using the Intersect Surfaces Tool clip the Using the Intersect Surfaces Tool clip the

orebody at the topo surfaceorebody at the topo surface• Take a screen shotTake a screen shot• Adjust the trasparancy of the topo surface so Adjust the trasparancy of the topo surface so

I can see the orebodyI can see the orebody• Pick a good view and take a screen shot.Pick a good view and take a screen shot.