Building Waste Dumps in MineSight

1. Building Waste Dumps in MineSight ©Mar 2008 Dr. B. C. Paul Note – These slides contain screen shots and demonstrate procedures for the program MineSight by Mintec Inc. Similar procedure outlines can be found in some Mintec course material or presentations.

2. I’m going to build a waste dump in this canyon area

3. To Do This I Will Do the Following • I will create an edit grid so I can put in horizontal planer surfaces • I will create a polygon (close pline) at the top surface of the proposed dump • I will use the extrude-expand tool to project the slope down from the polygon • I will clip my extruded polygon with the surface intersect tool and make it a part of my new surface

4. In the Data Manager Create a New Grid Set

5. Name that Grid Set and Click Ok

6. Set the Grid Set for Plan View and Accept Defaults Based on Our Project Area

7. I Can’t See Anything so I am going to close my new grid set I can still Attach it to the viewer

8. 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

9. Now I Will Attach a Grid Set to My Viewer First I click on the Green box to Attach the Gridset It then asks me Which gridset I left click to Highlight my Choice and Click ok.

10. Now I Pick My Chosen Elevation from the Gridsets Click on the Little blue Lined chart

11. Up Comes Your Choice of Planes(Left Click to Highlight Your Favorite)

12. 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)

13. I’m Naming My Dump Folder

14. Next I Will Create My Dump Object

15. I Will Name My Initial Dump Object

16. I Will Then Put it into Edit Mode(So I can put my initial dumps shape into it)

17. 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

18. I Will Now Start Creating a Polygon for the top level surface of my dump

19. 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)

20. For My Organization I Will Create A Dump Slope Geometry Object and Put it in Edit Mode

21. Now We Will Select This Polyline to extrude into a dump shape

22. Left Click My Line to Pick Right Click to Finish Note the line is A pretty red color

23. 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.

24. Start Working With the Extrude Window We will give it a Slope and distance To expand (select this option From the pull-down Menu)

25. Set the Dip Direction in Which to Expand (ie- straight down) Note the arrow Pointing the Direction of the Perspective expansion

26. Set The Slope I chose to enter My slope as A ratio In this case 3 Units over for Every unit down

27. 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.

28. Now I Will Preview My Dump

29. I’ll Look Around and Admire My Handiwork Ok – enough Admiration- Click apply

30. The Task Completes

31. 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 places So I would probably go back and adjust my Dump lines – if I were doing a design

32. 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

33. 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

34. 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 Trace a polygon In here Original topo

35. 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 command once the surfaces problem is solved)

36. I’m Going to Create An Object for my new Surface with the dump

37. Fire Up My Intersect Surfaces Tool

38. I Will Select Surfaces to Intersect I can select either By picking in the Viewer On by picking from 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

39. Now I Will Select the Dump as my secondary surface in the same way