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Timing layers

Lay the blast's timing on the ground: when each hole fired, the firing order, the charge per delay, the det log against the plan, and the estimated ground vibration and airblast.

When the plan gives each hole a firing time, the Visualiser can lay the timing on the ground. Six keys switch the layers: G, K, M, L, E and J. C changes what colours the planned holes.

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Timing layers, narrated: when each hole fired, the firing order and the charge per delay over the production shot, then the det log of the second shot, where one row never fired.

The layers

KeyLayerWhat it shows
GIsochronesContours of firing time on the ground, spaced to suit the gap between holes. The fired area lights up as the blast plays.
KSequenceThe firing order as a line through the collars, coloured by time, with a head that moves as the blast plays
MCharge / delayThe charge that fired within each 8 ms window, with the heaviest windows ranked in the legend and marked on the scrubber
LDet logThe detonator log against the plan: holes flash at their actual times, and a misfire is crossed out in red
EEst. PPVEstimated ground vibration around the blast, from its heaviest charge window
JAirblastRings travelling at the speed of sound from the heaviest charge window and from the selected hole

The same layers are pills under Timing layers in the settings. Isochrones, the PPV estimate and airblast are drawn for surface blasts. The isochrones need three holes or more.

Press G for the isochrones: the firing times as contours on the ground, lighting up as the blast plays.
Press K for the firing sequence, and M for the charge that fired in each 8 ms window.

The PPV estimate uses the project's fitted site law when it has one, and default site constants when it does not. The legend says which.

Colour the planned holes

Press C to change what colours the planned holes, or choose under Colour planned holes by in the settings:

  • Status: planned holes in their usual colour, and up-holes in blue.
  • Fire time: blue through red, first to last.
  • Firing group: a colour per group.
  • Charge / delay: the heaviest windows picked out.
  • Det log: green where the hole fired, red where it did not, and grey where the log has no entry.

The recorded columns keep their own colours, set by Colour Mode.

Press C to recolour the planned holes: by status, by fire time, by firing group and by charge per delay.

The legend

With a layer on, the timing legend at the bottom right explains it:

  • Fire time: the first time, the step and the last.
  • Charge per 8 ms: the heaviest windows, each with its charge and hole count, and a note when they differ from the plan's own figure.
  • Estimated PPV: which law the estimate uses.
  • Det log: the fired and misfire colours.
The timing legend

Reading the det log

The det log is the firing system's record of when each detonator actually fired. With it on, the replay fires each hole at its logged time instead of its planned one, and a hole that never fired is crossed out.

The det log of the second Hamersley North shot, with the row that never fired crossed out
On the second Hamersley North shot, the row that never fired is crossed out in red, and colouring by det log marks the same holes.

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