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Stress and Seismicity (Part 2) – with Tom Parrott from Entech
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Welcome to Part 2 of the Stress and Seismicity episode with Tom Parrott, Principal Geotechnical Engineer at Entech. In Part 2 we cover:
- Block Caves and Sub-level Caves continued.
- Why did Argyle have so much ground convergence?
- What controls stress better, Sub-level Cave or Block Cave?
- Using the Kambalda North mine as an example, can you predict stress for new developments in virgin ground?
- How do you measure the principal stress directions for any underground mine?
- Ideal mining sequence to control stress.
- Consequences of skipping a level and starting a 2nd mining front to make budget.
- Shotcrete and mesh combinations for high stress areas.
Make sure you listen to Part 1 first, where we covered:
- What are the differences between stress, seismicity, and convergence?
- What ground conditions and types induce high seismicity.
- How can mines in South Africa go to 4,000m deep where Australian mines struggle to reach 2,000m?
- Why is the Kambalda region a known Seismic area?
- Block Cave vs Sub-level Cave stresses (where they are and why are they there?)
- Meshing of development faces, should it be across the board or only in high stress areas?
Give Tom Parrott and Entech both a follow on LinkedIn
Ground Support episode – https://youtu.be/-uB_w1hNgrM
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