8/12/2019 Dig Line

1/4J u n e 2 0 1 0

Figure 1

Figure 1Four diglines with no restricons

or bindings. Each digline is represented

by cuts outlined in one of four colors. The

cut labels show the digline and direcon

(order) in which the cut will be mined.

Each digline could start at its seed (rst

cut) at any me.

Restrictions & Bindings in the Digline Generator Scrip

The Digline Generator script (ip-DiglineGenerator.pyz) is run from the MineSight Interacve Planner and sequences

cuts for processing in the MineSight Schedule Opmizer (MSSO). Cuts on a bench are sequenced based on seeds

represenng the inial mining face or starng dig point, or lead lines represenng the direcon in which the mining

face will advance. The script then assigns each cut to a digline and computes a direcon (order) in which the cuts should

be mined.

Mulple diglines can be generated at dierent seed locaons or using dierent lead lines, both of which can be designated

either primary or secondary.

The Restriconsand Bindingsopons in the Digline Generator script provide addional control for scheduling cuts on

a bench. Restriconscontrol the order in which diglines are acvated, restricng the acvaon of secondary diglines

unl primary diglines are completed. Bindingsdelay acvaon of segments of concurrent diglines unl all of the bound

diglines complete a common segment. This ensures diglines move forward together rather than allowing one digline to

nish far before the others.

The digline and direcon, plus any restricons and bindings, are stored in an aribute that is then specied in MSSO (the

default aribute is mssoPrecedence). During MSSO processing, the aribute constrains the opmized schedule.

R E S T R I C T I ON S

If four diglines are generated on asingle bench with no restricons or

bindings, MSSO will look at all four and

assume that any of them are available

to mine (Figure 1). In this example,

mining may start with cut 1:1, 2:1, 3:1

or 4:1 (digline:direcon).

8/12/2019 Dig Line

2/4

m i n e s i g h t

J u n e 2 0 1 0

Figure 2 Restricng

the start of the

secondary diglines

to the compleon of

their parent primary

diglines.

Figure 2

Figure 3

Figure 3 Opon to generate a

geometry object for visualizaon

of the restricons.

The opon to add restricons provides more control over the order in which the diglines are mined relave to each

other. On the Restriconstab, several opons are available. The example shows the eect of using the opon Restrict

Secondary Seeds to Primary forParent Primary Diglines, which delays the acvaon of a secondary digline unl its

parent primary digline is completed (Figure 2). Thus, secondary diglines 03 and 04 will not begin unl their parent

primary diglines (01 and 02, respecvely) are completed.

The results can be visualized in MS3D by generang an Output Restricon MSRon the Oponstab (Figure 3).

This will create a geometry object with a _restricted tag, containing aributed points located on each cut polygon

having a restricon. They are assigned material type Restricted and their display properes can be adjusted via the

Restricted material. When queried, these points will show an aributed name indicang the digline: direcon of the cut

restricng its acvaon (Figure 4). To show a label with the restricng cut, turn on the Node Labels for Element Name.

Figure 4 Restricng Secondary

Seeds to Primary example. The

circles (generated using the

Output Restricon MSR opon)

indicate cuts with restricons,

and the aributed name and

label indicate which cut must be

completed before the restricon

is lied. In this example, cut

2:36 must be completed before

beginning cut 4:1. Similarly, cut

1:32 must be completed before

beginning cut 3:1..

Figure 4

8/12/2019 Dig Line

3/4

m i n e s i g h t

J u n e 2 0 1 0

Restricons can also be designated using polylines for even further control over the diglines. This provides a point-and-

click denion for restricon relaonships. These polylines start in the cut that is to be restricted, and then traverse

the restricon cuts with a node being placed in each. Simply digize a polyline that begins in a cut to be restricted. The

next point should be in the cut that restricts the rst cut, and so on. Each node represents a restricon of a cut by the

cut with the subsequent node. Restricon polylines are then imported into the Digline Generator script by usingImport

Restriconson the Oponstab (Figure 5).

Figure 5

B I ND I N G S

Bindings work separately from restricons and act to restrict the advancement of a single digline ahead of other

concurrent diglines. The purpose is to mine along the diglines in such a way that they progress proporonally to one

another. The number of Binding Segments is specied on theRestricons tab (Figure 6).

Figure 6On theRestricons tab, two binding

segments are created for cuts in each primary

digline.

Figure 6

A binding segment is a fraconal poron of a complete digline; the greater the number of binding segments, the ghter

the binding. If the number of binding segments is set to one, no fraconal segments are created and no bindings are

made. Bindings can be specied for all types of diglines, including primary and secondary lead lines and primary and

secondary cuts. In this example, two bindings are created for only the primary cuts.

Again viewing the restricons object from Output Restricon MSRopon, Figure 7 shows the results of binding the

cuts on the primary diglines with two binding segments. This conguraon will divide each primary digline roughly into

halves, and restrict the acvaon of the second halves unl all of the rst halves have been completed. Thus, in Figure

7, cut 1:16 in the rst primary digline (01) and cut 2:18 in the second primary digline (02) cannot begin unl the rst

segments in both diglines (cuts 1:1 1:15 and cuts 2:1 2:17) are nished. Increasing the number of binding segments

will increase the number of groups used in this process, ghtening the grouping of cuts when mined.

Figure 5Imporng restricng polylines

8/12/2019 Dig Line

4/4

m i n e s i g h t

J u n e 2 0 1 0

w w w . m i n e s i g h t . c o m

SOFTWARE SOLUTIONS FROM MINTEC, INC.

CONC LUS I ON

The use of Restricons and Bindings in the Digline Generator script provides a great deal of control over cut sequencing

The opon to adjust restricon geometry using MS3D polylines makes the tool even more intuive so with just a few

simple inputs, the mining plan on a bench can be streamlined and customized. The sequencing is automacally passed

to MSSO, increasing the accuracy of the resulng schedule.

Figure 7 The eect of binding primary

diglines using two segments. Note how

the progression of both the primary

diglines are bound together. Digline 01

cannot connue with cut 1:16 unl 2:17 isnished, and Digline 02 cannot connue

with cut 2:18 unl 1:15 is nished. Figure 7

http://www.minesight.com/http://www.minesight.com/