Underground mine mapping requires the entry of traverse notes (for the placement of spads), entry of left and right offsets for locating mine pillars and perimeters, connecting the pillars and perimeters, the placing of special mine symbols and strata thickness measurements, and the drafting of projections for future mining. These are all fully covered in the Mining Module of Carlson. The mapping utilities apply primarily to underground coal mines but also to underground limestone, trona and even salt mines. In fact, any mine that creates pillars for roof support.
Here's a quick summary of the mine mapping procedure:
Let's now look at each of these steps in detail.
(1) Entering the Traverse Notes
The most direct method of entering traverse notes begins with
Draw/Locate Point in the Points Dropdown and continues with Locate by
Bearing or Locate by Azimuth. You
would Enter coordinates or Pick a Point within Draw/Locate Point. You
might choose to enter a specific
northing of 1200465.107 and easting of 795091.135. If this is your
first point on the job you will be asked
to select an existing or make a new .CRD file (coordinate file). You
would select New and choose
a name, typically equal to the name of the drawing. We will call our
file MINE. Then if you
select LOCATE BY AZIMUTH, the program will start at your first point by
default, and allow you to
enter an azimuth and distance to the next point, such as 100.1535 (100
degrees 15 minutes 35
seconds), and a distance of 120.09 feet. Press Enter for 0.00 vertical
angle and Enter for no Description. Pressing ENTER will repeat the
LOCATE BY AZIMUTH
command. Next try defaulting (repeating) the azimuth by pressing ENTER,
and input a distance of 60.05. You obtain a drawing as shown above.
Now, let's enter an elevation for all 3 points. Go to Points,
Coordinate File Utilities, input-Edit Point. The following dialog box
appears. Enter in the elevation for Point 1, choose next for points 2
and 3. Point1 elevation is 1016.73, Point 2 is 1016.75 and Point 3 is
set to 1017.03.
To enter the additional points. Use the Inverse and Traverse commands
from the COGO module in the COGO dropdown. Make sure Instrument Rod and
Height Prompting is turned on Under Point Defaults. This will prompt
for the height each time. Go to the COGO menu and turn on Linework.
This will draw the lines of the traverse. Now Select Inverse from the
COGO menu, or type I at the command line. Here are the next four
Traverse point entry values.
Command:
i, I
Calculate Bearing & Distance from
starting point? Traverse/SideShot/Options/Arc/Pick point or point
number: 2
PointNo. Northing(Y) Easting(X) Elev(Z) Description
2 1200443.7177 795209.3048 1016.7500
Traverse/SideShot/Options/Arc/Pick
point or point number: T
Traverse, Line OFF, RAW FILE OFF
Exit/Options/Arc/Points/Line/SideShot/Inverse/Angle-Bearing
Code <7>: 5 for Azimuth
Enter Azimuth (ddd.mmss) <280.1535>: 280.1535
Points/<Distance>: 60.03
Enter Vertical Angle (dd.mmss)
<0.0000>: .54
Instrument Height <-2.7000>: -2.7 Use negatives to come down from the roof.
Rod-Target Height <-1.9000>:
-1.9
Hz Distance> 60.0226
Enter Point Description <>: press Enter
for none
Enter Point Number <4>: press Enter to default to the
next available number
N: 1200454.4084 E:
795150.2420 Z: 1016.8929
(next point)
Exit/Options/Arc/Points/Line/SideShot/Inverse/Angle-Bearing
Code <5>: press Enter
Enter Azimuth (ddd.mmss)
<280.1535>: 10.135
Points/<Distance>: 59.98
Enter Vertical Angle (dd.mmss)
<0.0000>: -.425
Instrument Height <-2.7000>: -2.3
Rod-Target Height <-1.9000>: -2.1
Hz Distance> 59.9753
Enter Point Description <>: press Enter
for none
Enter Point Number <5>: press Enter
N: 1200513.4302 E:
795160.8942 Z: 1015.9456
(next point)
Exit/Options/Arc/Points/Line/SideShot/Inverse/Angle-Bearing
Code <5>: press Enter
Enter Azimuth (ddd.mmss)
<10.135>: 280.1535
Points/<Distance>: 60.02
Enter Vertical Angle (dd.mmss)
<0.0000>: .23
Instrument Height <-2.3000>: -1.95
Rod-Target Height <-2.1000>: -2.14
Hz Distance> 60.0187
Enter Point Description <>: press Enter
for none
Enter Point Number <6>:
N: 1200524.1201 E:
795101.8352 Z: 1016.5372
(next point)
Exit/Options/Arc/Points/Line/SideShot/Inverse/Angle-Bearing
Code <5>: press Enter
Enter Azimuth (ddd.mmss)
<280.1535>: 190.1535
Points/<Distance>: 60.01
Enter Vertical Angle (dd.mmss)
<0.0000>: .07
Instrument Height <-1.9500>: -1.78
Rod-Target Height <-2.1400>: -1.85
Hz Distance> 60.0099
Enter Point Description <>: press Enter
for none
Enter Point Number <7>:
N: 1200465.0698 E:
795091.1468 Z: 1016.7293
Exit/Options/Arc/Points/Line/SideShot/Inverse/Angle-Bearing
Code <5>: press Exit to end
The following image should appear in the drawing.
(2) Drawing Projections
There are four types of projections: Basic Projections, Advanced
Projections, Projections and Ventilation and Rooms.
Basic Projections will only produce rectangular projections (not
angular). This option, however,
has fewer prompts and is more automatic. Let's run Basic Projections.
Start pt. of belt entry: Pick point 4 (You are automatically placed in intersect and node snap mode. All Carlson points have nodes, so you can use the node snap. You can override the pre-set snap by picking the asterisks at the top of the sidebar menu and selecting another choice.)
Command:
panel1, PANEL1
Command: (intersect/node on)
Start pt. of belt entry: Pick Point 4 (for
point number 4)
<P>ick End Point For Belt or [A]
For Azi/Dist: A
Azimuth to end of belt [ddd.mmss]: 10.1535
Distance to end: 540
Number of entries on left side: 1
Number on right side: 2
Entry spacing: 60
Crosscut spacing: 60
Plot Outer Rib Line y/<n>: Y
Cut Width <20>: press Enter
Offset to starting rib line (e.g.
-10,0,<10>): press Enter
Offset to ending rib line (e.g.
-10,0,<10>): press Enter
Offset xcuts y/<n>: N
Pick pt. on xcut for beginning of
stopping line: pick a point as shown on figure
Draw another stopping line
<y>/n: Y
Pick pt. on xcut for beginning of
stopping line: pick a point as shown on figure
Draw another stopping line
<y>/n: Y
Pick pt. on xcut for beginning of
stopping line: pick a point as shown on figure
Draw another stopping line
<y>/n: N
Pick pt. on entry to begin drawing
ventilation arrows [nea on]: pick a point as shown on figure
Distance between ventilation arrows: pick a point as shown on figure
<I>ntake or [R]eturn: I
Draw ventilation arrows on another
entry <y>/n: Y
Pick pt. on entry to begin drawing
ventilation arrows [nea on]: pick a point as shown on figure
Distance between ventilation arrows: pick a point as shown on figure
<I>ntake or [R]eturn: R
Draw ventilation arrows on another
entry <y>/n: N
Project another panel <y>/n: N
You will notice how all projection lines are on distinct layers (PROJECTIONS, PROJSTOPPINGS, PROJVENTARROWS).
With the projection shown, it is easy to illustrate rooms. Select Rooms under the Works dropdown.
Command:
rooms, ROOMS
Start pt. of rooms: _int of
End pt. of rooms: _endp of
Distance between room entries: 40
Distance between room crooscuts: 40
Room depth: 240
Rooms on <R>ight or [L]eft side:
R
While here, let's select Label Proj. Distances.
Command:
LDIST
Belt entry (point to point mode)
y/<n>: N
Select line to label distance on:
Pick as many entry and crosscut lines as desired. This Label Proj. Distances routine applies to Basic Projections and Rooms using the pick line option. The pick option places the distance on the picked line segment. For Advanced Projections, most lines are continuous from the start to the end of the projections, so the point-to-point end-point pick mode must be used. This point-to-point mode must also be used on the belt line (from spad 4), since it is one continuous line.
Now let's label our panel and rooms. Select Panel Label Block.
Command: labelplan, LABELPAN
Insertion point: Pick anywhere in the open areas.
Rotation angle: Pick the
rotation angle from the insertion point.
SECOND DIMENSION <60'>: press Enter
FIRST DIMENSION <60'>: press Enter
Now Select the command: Room Label Block
The final projection option we'll run is Advanced Projections. Select it.
Command:
panel2, PANEL2 (Intersect/node on)
Pick Start Point For Belt: Pick
where Pick3 is on the figure below.
Pick End Point For Belt, or <A>
For Azi/Dist: A
Enter Azimuth in ddd.mmss
<280.1535>: 280.1535
Enter Distance: 360
How Many Entries Left Of The Belt
<0>: 2
How Many Entries Right Of The Belt
<0>: 3
Enter Offset For This Heading
<0>: press Enter
Enter Offset For This Heading
<0>: press Enter
Enter Offset For This Heading
<0>: press Enter
Enter Offset For This Heading
<0>: press Enter
Enter Offset For This Heading
<0>: 20
Use sidebar to select double-dash
stoppings.
Pick pt. on xcut for beginning of
stopping line: Pick as many xcuts as you would like.
Draw another stopping line
<y>/n: Y Use sidebar to select double-dash stoppings.
Pick pt. on xcut for beginning of
stopping line:
Draw another stopping line
<y>/n: Y Use sidebar to select double-dash stoppings.
Pick pt. on xcut for beginning of
stopping line:
Draw another stopping line
<y>/n: N
Pick pt. on entry to begin drawing
ventilation arrows [nea on]: Pick ventilation arrow location.
Distance between ventilation arrows: Pick
interval distance.
<I>ntake or [R]eturn: I
Draw ventilation arrows on another
entry <y>/n: Y
Pick pt. on entry to begin drawing
ventilation arrows [nea on]: Pick ventilation arrow location
Distance between ventilation arrows: Pick
interval distance
<I>ntake or [R]eturn: R
Draw ventilation arrows on another
entry <y>/n: N
Complete the stopping and ventilation options as desired. A plot similar to the one above is obtained. All entries are continuous lines, while crosscuts are individual lines.
(3) Entering the Offset Notes
Since mining operations have different methods for note taking and
posting, there are three
distinct routines for entering offset notes: Mine Note Left/Right/Face,
Mine Note Auto Left/Right,
and Mine Note From CRD File. Each of these routines operate with a
similar procedure of first
choosing a starting point and direction, and then distancing up and
offsetting left and right repeatedly.
There are also two setup routines. Mine Note From Face Prompt allows
the mine note entry routines
to post back from the face, and ASCII File From Notes is an option for
keeping a record of the
offset notes in an ASCII file. All these routines are located in the
Notes dropdown menu.
Before we can begin an example, there needs to be some starting points. Select Locate Point and place one point. Then select Locate By Azimuth and place a point at azimuth 100.0000 and distance 60. Repeat Locate By Azimuth with the same values from the second point.
Now we can enter offset notes. Go to Mine Note Auto Left/Right in the Notes dropdown menu.
Command: note2
Enter Offset File Name
<offset.dat>: press Enter
Append File [<Yes>/No]? N (This appears only if the file already
exists.)
Tabular Format--Distance L R Hgt--
(<y>/n):Y
From Station point[node on]: (795704.0
1.20119e+006) Pick Point 1
To Station point (A for Azimuth): A
Azimuth of Heading (DD.MMSS) or p for
pick <0.0>: 10
Spad Number, or <ENTER> For
None: press Enter
Entry Number: press Enter
Enter distance from station on
centerline (U To Undo, Enter to end): 10
Enter left offset distance: 10
Enter right offset distance: press Enter
Enter distance from station on
centerline (U To Undo, Enter to end): 30
Enter left offset distance: C11
Enter right offset distance: C10
Enter distance from station on
centerline (U To Undo, Enter to end): 70
Enter left offset distance: 10
Enter right offset distance: 9
Enter distance from station on
centerline (U To Undo, Enter to end): 88
Enter left offset distance: C10
Enter right offset distance: C10
Enter distance from station on
centerline (U To Undo, Enter to end): 110
Enter left offset distance: 10
Enter right offset distance: 9
Enter distance from station on
centerline (U To Undo, Enter to end): press Enter
Another Spad [<Yes>/No]? Y
From Station point[node on]: (795763.0
1.20118e+006) pick Point 2
Azimuth of Heading (DD.MMSS) or p for
pick <10.0>: press Enter
Spad Number, or <ENTER> For
None: press Enter
Entry Number: press Enter
Enter distance from station on
centerline (U To Undo, Enter to end): 30
Enter left offset distance: C11
Enter right offset distance: C11
Enter distance from station on
centerline (U To Undo, Enter to end): 65
Enter left offset distance: press Enter
Enter right offset distance: 8
Enter distance from station on
centerline (U To Undo, Enter to end): 70
Enter left offset distance: 10
Enter right offset distance: 12
Enter distance from station on
centerline (U To Undo, Enter to end): 90
Enter left offset distance: C10
Enter right offset distance: C10
Enter distance from station on
centerline (U To Undo, Enter to end): press Enter
Another Spad [<Yes>/No]? press Enter
From Station point[node on]: (795822.0
1.20117e+006) pick Point 3
Azimuth of Heading (DD.MMSS) or p for
pick <10.0>: press Enter
Spad Number, or <ENTER> For
None: press Enter
Entry Number: press Enter
Enter distance from station on
centerline (U To Undo, Enter to end): 10
Enter left offset distance: press Enter
Enter right offset distance: 10
Enter distance from station on
centerline (U To Undo, Enter to end): 30
Enter left offset distance: C10
Enter right offset distance: C10
Enter distance from station on
centerline (U To Undo, Enter to end): 68
Enter left offset distance: press Enter
Enter right offset distance: 9
Enter distance from station on
centerline (U To Undo, Enter to end): 70
Enter left offset distance: 10
Enter right offset distance: 20
Enter distance from station on
centerline (U To Undo, Enter to end): 88
Enter left offset distance: press Enter
Enter right offset distance: 20
Enter distance from station on
centerline (U To Undo, Enter to end): 90
Enter left offset distance: C10
Enter right offset distance: C10
Enter distance from station on
centerline (U To Undo, Enter to end): press Enter
Another Spad [<Yes>/No]? N
Print file containing offset input
data [<Yes>/No]? N
This should produce the following layout of points and spads:
(4) Connecting Pillars and
Perimeter
Once the offset notes have been entered, the pillars and perimeters
can be drawn by
connecting the dots. Pillars are created as closed polylines in the
PILLARS layer, and perimeters are
created as closed polylines in the PERIM layer.
There are two approaches for connecting the dots. One is to manually connect the pillars and perimeters by simply picking each point in order and using C to close at the end. This is done with the Draw Pillars and Draw Perimeter routines in the Works dropdown. The other method is to use AutoMine Connections which automatically connects up the pillars and perimeter. This routine reads a record file from a mine note entry routine and requires that the corner points (the first points across a crosscut) are coded. If you entered the example offset notes in the previous section, then everything is ready for AutoMine Connections. Select it from the Works dropdown and choose the file "offset". After drawing the pillars and perimeter, AutoMine leaves a pick box hanging off the perimeter so that you may connect it with a previous perimeter. In our sample case, just enter 'C' to close the perimeter.
It is important for quantity calculations that these polylines are
closed. To make
sure your pillars and perimeter are closed polylines, use the Highlight
Unclosed Polylines routine in the Works dropdown.