Building Waste Dumps in MineSight (1)

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Building Waste Dumps in

MineSight

©Mar 2008 Dr. B. C. Paul ©Mar 2008 Dr. B. C. Paul Note

Note – – These slides contain screen shots and demonstrate procedures for the These slides contain screen shots and demonstrate procedures for the program MineSight

program MineSight by Mintec Inc. by Mintec Inc. Similar procedure Similar procedure outlines can be found ioutlines can be found inn some Mintec course material or presentations.

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I’m going to build a waste dump in

this canyon area

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To Do This I Will Do the Following

•• I will create an edit grid so I

I will create an edit grid so I can put in

can put in

horizontal planer surfaces

•• I will

I will create a polygon (close pline) at the

create a polygon (close pline) at the

top surface of the proposed dump

•• I will use the extrude-expand tool to

I will use the extrude-expand tool to

project the slope down from the polygon

•• I will clip my extruded polygon with the

I will clip my extruded polygon with the

surface intersect tool and make it a part

surface intersect tool and make it a part of

of

my new surface

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In the Data Manager Create a New

Grid Set

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Set the Grid Set for Plan View and

Accept Defaults Based on Our Project

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I Can’t See Anything so I am going

to close my new grid set

I can still

Attach it to the viewer

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I’m Going to Explore for Where I

Want My Dump Top

I turned off the Surface view so I could see just My contours

Then I querried The contour line I was interested in To get its elevation

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Now I Will Attach a Grid Set to My

Viewer

First I click on th Green box to Attach the Gridset It then asks me Which gridset I left click to Highlight my Choice and Click ok.

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Now I Pick My Chosen Elevation

from the Gridsets

Click on the Little blue Lined chart

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Up Comes Your Choice of Planes

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Now I Will Set Up the Place to

Store My Dump

For my

Organizational Plan I will create A folder that will

Have my dump Stuff in it (You might Choose to Organize Differently)

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I Will Then Put it into Edit Mode

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I am about to enter the points around

the edge of the dump surface

I will tell the Computer to Snap my points To the plane Of the edit grid

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I Will Now Start Creating a Polygon for

the top level surface of my dump

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Click to Trace Out the Polygon

(That will represent the top level surface of my

dump)

Note that my Polygon extends Beyond the Topography (That’s ok Because I’m Going to cut The surface Anyway)

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For My Organization I Will Create A Dump

Slope Geometry Object and Put it in Edit

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Now We Will Select This Polyline to

extrude into a dump shape

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Left Click My Line to Pick Right

Click to Finish

Note the line is A pretty red

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Now Pick Polyline Extrude

Oh what a Mystery – you Have to pick A line to make

Extrude active But then it asks You to pick it Again.

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Start Working With the Extrude

Window

We will give it a Slope and distance To expand

(select this option From the pull-down Menu)

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Set the Dip Direction in Which to

Expand

(ie- straight down)

Note the arrow Pointing the Direction of the Perspective expansion

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Set The Slope

I chose to enter My slope as A ratio

In this case 3 Units over for Every unit down

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Tell it I Want to Create A Dump

Surface

Extrude will Create a Second polyline 250 meters

Lower and out 750 meters – I will create a Slope surface By connecting Those lines I also want it To create a Top surface for Me.

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I’ll Look Around and Admire My

Handiwork

Ok – enough

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I Like This View a Little Better

I turned topo off The surface On

Made my dump Solid instead of Triangles

And set the Dump color to Blue

(no you don’t Have to copy my Picture)

Actually I don’t think we’d fill in a couple of place So I would probably go back and adjust my

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Next I Would Like to Get the

Volume of My Waste Dump

• So I can see how much capacity I have at

a given time

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The Following is a Temporary

procedure until a Minesight Surface

Problem is Solved

• Create an object to store contour lines for your

dump surface

• Have Minesight create contours for your dump

surface

• Have only the following layers on

– The topo lines of your pre-dump surface

– The topo lines for your dump

• Link a horizontal edit grid to your viewer

– (you did it before in this procedure)

– Set volume clipping so that you only see the contours

for one elevation at a time

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Continuing the Temporary

Procedure

• Create an object for intersecting layers

• Create a polygon on each elevation

tracing around the dump contour back to

the original land contour

– Obtain the area of the polygon (Query should

do this once you have a close polygon)

Dump contour

Original topo Trace a polygon

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Continuing the Temporary

Procedure

• You will have polygon areas for multiple

elevations (every 20 meters)

– Where the dump goes below the old surface

obviously you will have no polygon

• Take each polygon area and multiply the area

by 20 meters to get a volume in cubic meters

• Add the volumes up for the total volume

• The technique just described is called average

end area

• (Minesight will do this automatically with one

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I’m Going to Create An Object for

my new Surface with the dump

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I Will Select Surfaces to Intersect

I can select either By picking in the Viewer

On by picking fro A menu

The little blue “worm” is the Window pick – Click it

Then click on my General surface

Then right click To complete my selection