User Manual

TimeHEx
to the point of interest divided by the vibration velocity
through the ground to calculate an arrival time for each
deck at the point.
travel time (ms) = distance (m) x 1000 ÷ velocity (m/s)
arrival time (ms) = detonation time (ms) + travel time (ms)
The arrival time is then used instead of the detonation time
to recalculate the bar chart. To select a new point,
[right-click] the button on the tool bar and [click] on a new
point.
Set the wave transmission velocity through the rock, to
calculate the arrival time chart.
Enter the parameters for calculation of blast-induced
ground vibration and airblast using the scaled-distance
formula. The calculation can be performed at a fixed
distance, or relative to a point of interest - either select a
pre-defined point (label) or enter the coordinates.
Display the ground vibration and airblast values for a
selected bar in the chart. [Drag] to move the text to another
location in the chart.
Query the values and data for a bar in the chart, or for a
blast hole in the design view. In the chart, [click] on any
bar to show a text box of the data. The arrow keys can then
be used to move to the next bar, or [click] again to move
the cursor with the mouse.
In the design view, [click] any hole to see all data for the
hole and a schematic display of the decks and downhole
246 JKSimBlast