The locations of five permanent vibration monitors are marked on the map below. The underground workings are separated by faults into compartments. A plan and cross sectional view of the mine illustrates the location of these faults and compartments. Each stope firing occurs in an area underground defined by the compartment and the depth.
Vibration monitor key:
SOV = Sovereign Hill
McK = McKee St
BAR = Barkly St
GP = Golden Point
GREY = Grey St
Ballarat Gold Mine’s vibration limits are set, enforced and audited by the Earth Resources Regulator.
The following limits are approved in the Ballarat Gold Mine’s Work Plan:
- 100% of blasts to have a PPV of less than 10 mm/s.
- Between the hours of 10pm and 7am, no blast is to exceed a PPV of 3.0 mm/s
- Overall, 95% of blasts to have a PPV of less than or equal to 5.0 mm/s
PPV = Peak Particle Velocity
Ballarat Gold Mine continues to remain well below these limits.