Geotechnical Risks of UG mining Flashcards
What can geotechnical risks dominate
safety and economic considerations including viability of operation
What is needed to apply management techniques to geotechnical risks
provided the risks are recognised and understood
What are the 3 levels of risk
Level 1 - day to day operational risk
Level 2 - specific site or mining condition related risks
Level 3 - core risks associated with the mining method or system
What is a core risk
any risk associated with a major hazard or potential hazard that is an inherent feature of the generic mining method.
They cannot be totally eliminated and must be controlled and managed
what was the catalyst for assessing core risks
1999 Northparkes mine accident when 4 lives were lost
What are the three groups of mining methods
Naturally supported
Artificially supported
Unsupported
What increases towards unsupported
the magnitudes of displacements in the country rock
what increases towards naturally supported
the strain energy/storage in the near field rock
What should be done in a risk assessment for core risks
Document the thinking behind the hazard choices and the potential consequences
This documentation needs to be meaninful for years
What should audits do
should be a standard practice to regularly audit performance. Audits should revisit any major risk assessment that had been carried out previously.
At what stage are core risks identified
feasibility
how can mining risks be managed
Mining risks can be managed, provided we know what to manage, and we do not lose sight of the core risks
