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2DBench v2.10.1

Updates and New Features

New Features

Burden Relief

The Burden Relief analysis has had a major overhaul. The calculation has been

extended to include the quantity of explosive in the tested holes, separate charges in

the same hole can now be excluded, and the results can now be displayed in a chart of

mass vs time with a link to the blast holes.

The burden relief analysis tests every hole when it detonates to checks if there are

sufficient holes, within a maximum distance of the tested hole that detonate at a

minimum time before the hole, to create a free face for the tested hole. The testnow includes an option to check that there is sufficient explosive in the holes, onthe basis that if there is not enough explosive to move the rock, then the new free

face will not be created. The explosive mass can be checked as a mass per charge

or the total charge mass fired before the hole.

Where a blast hole has multiple, separated charges (i.e. with stemming betweenthe charges), the analysis previously included these charges in the distance/time

calculation. However, this could be misinterpreted in the results if it was set up to

test other holes but the extra charges and shorter distances for charges in the samehole are not taken into account. The standard calculation now ignores separate

charges within the same hole, or these charges can be included by activating acheck box on the parameters dialog.

The final part of the burden relief is new chart of charge vs time (similar to theMIC analysis), with link from a selected bar to the blast hole at that detonation

time. The link also highlights the holes that contributed to the result at the linked

hole, in a different colour. The graph data and the graph image can be copied to

any external application.

Hole Contours

This is a new analysis in 2DBench. It is similar to the Contour function in 2DView,

but provides more options and more values to contour. This analysis is included inthis release of 2DBench as a draft version, and is available to all current users of

2DBench, JKBench and JKBench+. Later releases will be controlled by a specific

Contour license, which is currently provided to all users of 2DView, and will be

added to 2DBench with an increase in the annual fee for Support and Maintenance.

This initial version has two types of contours available. The final version will have

three types of contour, with an additional sub-type for Line contours.

Hole: the contour pattern is displayed as colour-filled circle on each blast hole,

similar to the Burden Relief analysis.

Line: the contour pattern is displayed as lines, with the blast holes as the control

points. There are two sub-types, both similar to the two options for detonationcontours.

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o Linear: the blast holes are used as the vertices of the minimum trianglesbetween holes, and the contour lines are located between the holes

proportional to the values at the holes.

o Inverse Distance: a grid of points is created across the blast and the values at

the points are calculated according to their inverse distance from the blast

holes. The contour lines are plotted between these points.

This sub-type will be available in the final version.

Fill: the contour pattern is displayed as points, coloured according to the contour

scale, similar to the Energy Distribution and Damage analyses.

This contour type will be available in the final version.

Please note that not all contour values can be calculated in this draft version, even

though it may be included in the selection lists. In general, many of the values that

are based on multiple items in a hole (for example, total explosive length per hole),

cannot be calculated yet.

One contour pattern for each of Hole and Line (Linear) contours can be created in thisversion, but both can be displayed at the same time. This allows for relationships

between different values to be calculated as either hole or line types and displayed

together for comparison.

The final version will be able to calculate multiple contour patterns in each type and

display a selected contour from each type together on the blast.

Enhancements

Enhancements are modifications or additions to existing features that provide some

extra functionality in the program. A new option in the Loading Decks dialog, under Quantity, to load a deck as a

number of cartridges. This option is only available when a cartridge material hasbeen selected in the Material list. The cartridge must be defined in the stocks

database, so it is not possible to access this option by converting a bulk explosive

to a cartridge by entering a diameter and length.

In the parameters dialog for Loading Decks, the Series name and Material namecan now be entered manually, to create a custom explosive or non-explosive. This

is already possible in Downhole and Surface delays, but was not enabled for

Decks.

The feature to view a picture linked to a stock item has been changed to view anydocument, including a web address. The button labeled [View Document]on the

parameter dialogs for Loading Decks, Downhole Delays and Surface Delays will

open a linked document in the associated application.

A distance parameter has been added to the Line mode in Detonation Contours, to

speed up calculation. By default, the value is set to 3 times the maximum of thedefined burden or spacing, but any value can be entered. The parameter is used to

exclude triangle sides during the initial calculation if they are longer than thespecified distance. This also excludes some triangle sides that might have

produced misleading results, such as between holes in a blast that are a long

distance apart with no other holes between.

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There have been some minor changes to text from the export / save / copy

functions. This have been done to match the text from the new export text

function in JKBMS, and to clear up some potential confusion. The changes could

affect any reporting applications that search for specific text in the exported data

files. If this occurs, please contact Soft-Blast for further assistance.

The ignition hole ID number has been added to data files created from export /copy. This will allow reporting applications to easily identify the initiation point.

When the program starts, the user will be warned if the license will expire soon.For an annual or long term license, the message will appear 30 days before the

expire date or when the number of remaining g uses is less than 25%. The details

for periodic licenses are shown on >Help >About.

The tab orders on several forms have been corrected, so that pressing the [Tab]key will cycle through the data entry fields and buttons in a logical sequence.

All values for lengths, areas and masses have been modified to 3 decimal places,

and all times to 2 decimal places.

There are several minor changes to some messages.

Fixes

The following items have been fixed..

In Area mode, the Line Cut tool would not copy a portion of a polygon with only

one vertex included in the cut section. Cutting single lines or polygons with

multiple vertices between the end points was unaffected.

In some cases, the program could crash if >Edit >Undo was selected while theHook was active.

When loading a deck of cartridges, the number of cartridges was not calculatedcorrectly for defined length or mass due to a round-off error.

The bench level of marked nodes could not be changed globally from the HoleParameters dialog.

The maximize button on several forms has been disabled.

Selecting the Lilly curve in the Kuz-Ram fragmentation analysis could cause theprogram to crash.

Design Importer

The Design Importer program has been upgraded to give more options for multiple

file formats, and to force the correct calculation of hole lengths in some cases.

The Design Importer program used the extension of the selected file name toautomatically load the format specification used in the program. the specification

are stored in the file Import.ini. However, if different formats were required for

files with the same extension, only the specification for the first one found in the

.ini file was loaded.

To correct this, a drop-down list of all specifications in the .ini file is provided onthe first screen of the program, with a user-defined comment to describe to format.

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The specification is created in the same manner as before, after the details havebeen confirmed and the import has been started, by entering a name and

description on the last screen.

In addition, after a specification has been selected on the first screen, it is not

necessary to go though all of the other screen to finish the procedure. The import

can be started immediately by clicking the [Finish][ button on the first screen.

Previously, if importing data that included only a collar level for each hole, the

holes were with the length defined on the final parameters screen. If the collar

levels were different, then the toe level of each hole would also be different,

because a single length was used for each hole. The length would override any

floor level entered in the parameters. Now, the floor level can be forced instead ofthe hole length with an option on the final parameters screen. This allows holes to

be imported as only collar coordinates, and the correct hole length to a target floorlevel is calculated during the import process.