jksimblast

Overview

2DBench is the open cut blast design module of JKSimBlast. It allows the user to layout a blast design consisting of blast holes, decks, downhole and surface delays and connections, and then to run a detonation simulation. The design can be further described by strings and polygons. Basic analyses of volume, tonnage, powder factor, component and total costs can be calculated for the design.

Although the design is created in 2D plan, all data is stored with full 3D coordinates (east, north, level) in Microsoft Access databases. Added to this are component details (hole parameters of dip, bearing, diameter, length, burden, spacing), properties of explosives, detonators, primers and connectors, and detonation timing information.

The data generated by 2DBench can also be analysed in TimeHEx (blast timing vs holes and explosives) and analysed in 2DView (section and oblique views) for explosive energy distribution contours of explosive mass and energy, and contouring of hole-related data.

Note  2DBench is now available in three versions:

• a scaled-down version, called JKBench, which has all of the basic features of 2DBench
• an extended version of JKBench including the design tools for electronic delays
• the full version, with all of the features as listed below

All versions use the same blast and stocks databases, and are fully compatible with each other. Both versions of JKBench can be upgraded to the full version of 2DBench at any time. Contact Soft-Blast for details

---

Program Features:

A blast design is divided into five component options, created in the various modes in the program. Each mode has specific tools and functions, with several global editing tools and reporting, query, input and output functions.

(Features available only in the full version are marked (F)).

Area mode (Line/Polygon Creation) draw and edit (F) strings and polygons set string and text labels on the design import strings and polygons from text files cut/copy/paste strings and labels
Drill mode (Hole Creation) hole properties and pattern parameters drill single holes and patterns (square, staggered, polygon (F), follow string (F)) import holes from text file edit hole properties (F) attach holes to a surface or plane (F) cut/copy/paste holes and attached data
Load mode (Material Loading) load multiple decks of materials load by length, mass, depth from collar or percentage of hole length user-definable materials stored in Stocks databases explosives and non-explosives (stemming, air-deck, water, etc) modify material properties at any time (F) deck properties stored with design
Down Hole Delays mode (Downhole Delay Sequencing) insert detonators, primers and connectors insert at distance from toe or collar define scatter (standard deviation) for timing analysis (F) user-definable items stored in Stocks databases modify properties at any time (F) properties stored with design
Electronic Delays  (Downhole Delay Sequencing) define individual detonators at any delay time define scatter (standard deviation) for timing analysis (F) connect any two holes or a line of holes with variable inter-delay time program for any portion of blast with chevron, linear and radial contours user-definable items stored in Stocks databases modify delay properties after insertion (single, global offset) properties stored with design
Surface Delays mode (Surface Delay Sequencing) define detonators and connectors define scatter (standard deviation) for timing analysis (F) connect any two holes or a line of holes inter-hole, inter-row, uni- and bi-directional user-definable items stored in Stocks databases modify properties at any time (F) properties stored with design
Detonate mode (Detonation Simulation) simulate the detonation sequence on screen continuous and step display show separation of initiation and detonation fronts calculate nominal and average times (F) and scatter (standard deviation) (F) for all components display detonation times for all components all timing results saved in design database	Click to see a sample detonation simulation.
Analysis tools contour of first detonation times for holes chart of maximum instantaneous charge with calculation of PPV and airblast contours of explosive energy distribution (F) contours of Persson-Holmberg damage (F) burden relief - probability of success (F) Kuz-Ram fragmentation analysis (F) and JKMRC fines correction (F) calculate powder and energy factors based on defined volume or design parameters calculate totals for design components: count, quantity, mass, cost copy design data to external application (e.g. spreadsheet) copy results to external application or save to file
General tools cut, copy and paste data internally or externally import strings and hole layouts from text files zoom in/out or set scale of design area query details on holes, decks, delays, strings, etc add comments to overall design, options and holes print design to scale blast reporting via Excel save blast changes as a history of every stage of design and implementation save screen appearance and design parameters customise units of measurement for display combine design options to create new designs data saved in Microsoft Access databases is available to other applications