EXTERNAL FOG/DAMAGE - DESCRIPTION
This section is mandatory whether reporting a seismic event, FOG or both, as long as the site is safe to access.
How do I complete Damage Site Desciption section?
How do I complete Site Geology, Structure, Stress Conditions, Presence of Water (I/s) section?
How do I complete Kaiser Rock Damage Scale section?
How do I complete Failure Mode section?
How do I complete Damage Site Desciption section?
Describe the damage site of the seismic event hypocentre or FOG. If reporting a seismic event with no FOG, it is still possible to have rockmass damage. Provide a concise description of the damage, including photos, which you can attach (section 7).
How do I complete Site Geology, Structure, Stress Conditions, Presence of Water (I/s) section?
Whether reporting a seismic event or FOG, describe the geology, stress and other geotechnical considerations for the site which may assist understanding of the causal factors.
How do I complete Kaiser Rock Damage Scale section?
This Damage Scale has been adopted by the ACG in their Generic Seismic Risk Management Plan for Underground Hardrock Mines (SRMP) and as such has been adopted by the DMP as our standard for occurrence reporting.
If you have had no visible damage, click on the R0 button. Otherwise, refer to the following rock damage scale to determine whether your event is R1,2,3,4 or 5.
Rock Damage Scale
Reference: Kaiser, P.K., Tannant, D.D., McCreath, D. R. and Jesenak, P.,1992, Rockburst damage assessment procedure; in Rock Support in Underground Mining and Construction, Kaiser and McCreath (eds), Balkema, Rotterdam, pp. 639-647.
Table: Rock Damage Scale (RDS) from Kaiser et al (1992).
Notes:
1) The damage indicators listed in this table describe damage that is new and was caused by the rockburst. If the observer cannot ascertain that the damage was inflicted by the rockburst then the damage should be ignored for the purposes of damage classification.
2) The mass of displaced rock serves only as a rough guide and should not be used alone to establish the degree of rockburst damage. Other qualitative descriptions are equally important when deciding on the degree of damage.
3) One or more damage scales may be observed in the same area and should be recorded separately.
4) �Loose� is rock that could be scaled down by hand without much effort.
How do I complete Failure Mode section?
When reporting a FOG, click on the Static button (wedge, block etc). To report a seismic event only, click on the seismic button that best describes the event. The categories are extracted from the ACG Generic SRMP. If reporting both a FOG and seismic event (in the one occurrence), click on both the static button and the applicable seismic button (shakedown or buckling etc).
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