Excavation Hazard

The excavation hazard is calculated on **minodes **that represent underground tunnels as a series of connected nodes.

• The connection between the grid hazard and minode hazard is defined by the Ground Motion Prediction Equation (GMPE).
• The hazard parameters can be plotted on minodes or painted onto mine surveys.
• There are a number of marker styles that describe the hazard on minodes.
• There is a summary in the footer of the 3D view indicating:
  • The total mine-wide hazard that gives the annualised probability of a strong ground motion (of chosen PPV) at any excavation.
  • You can also select a subset of minodes and calculate the probability of a strong ground motion within that zone.
  • You can also use a magnitude and distance instead of a PPV to define excavation hazard.

Info

For more information on minodes and to find out how to create or update them, go to this page: Minode Generator

For more information on the GMPE, go to the following theory page: GMPE Theory

The theory behind these hazard indicators is discussed on this theory page: Hazard Assessment Excavation Theory

Excavation View

0:07:10

The previous video showed the isosurface view that is independent of excavations. The excavation view shows the ground motion hazard on work areas.