Wambo Coal AEMR 2011-2012 - Peabody Energy

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Figure 7: Sensor 1 above the doorway.
Figure 8: Overall setup in the southern,
first-floor room of the Kitchen Wing.
Sensor 3 was set up on the chimney breast
as its behaviour may have been different
from the rest of the building.
2.2 Results
2.2.1 ANALYSIS
The results from the accelerometers were analysed as follows:
• using an routine based on in the program Matlab, the acceleration readings were analysed to yield
velocity and displacement values, a typical result being shown in Figure 9;
Figure 9: Recordings and transformations from sensor 3 (centre
of ceiling) on 16/12/2011. The maximum velocity is 21.6
mm/s, an amplification of 16×. Displacement of the ceiling is a
maximum of 0.3 mm, which is well within the acceptable limit.
The time scale in this plot relates to the GPS-sourced time and could
be used to give greater understanding of the effects if other blast
recorders were time to similar accuracy.
Wambo Homestead
Vibration vulnerability
April 2012