Rock mechanics
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This document discusses rock mechanics challenges in underground construction and mining. It begins with definitions of rock and rock mechanics. It then outlines some of the key challenges faced like swelling, spalling, maintaining standup time of rock walls, and supporting deep excavations. Opportunities that come from addressing these challenges are also mentioned. Important rock mechanics terms are defined. The document concludes with a question and answer section.
Rock mechanics
- 1. Rock mechanics 2012-min-07, 2012-min-39 Topic of presentation Rock mechanics challenges in U/G construction and mining
- 2. Contents What is Rock Rock mechanics Challenges and opportunities Important terms (related to topic) Elements of Underground constructions Conclusion Q&A
- 3. What is rock Aggregates of mineral grains that are connected by strong and permanent forces
- 4. Rock Mechanics Subject started from 1950s Response of rock to an applied disturbance
- 5. Challenges and opportunities New ideas to solve the challenges provide opportunities for economic benefits
- 6. Important terms Brittle failure Shear failure Standup time Bulking behaviour Rock strength Spalling Wedge failure Squeezing Swelling
- 7. Elements of U/G construction
- 8. Cause of Challenges Not sufficient Knowledge about behaviour of rock Ignorance Neglecting small observations Not sufficient Familiarity with Rock mechanics
- 9. Challenges Swelling Spalling Standup time of rock Support challenges during deep excavation Maximum cost risks Challenges in infrastructure Wedge failure Brittle Rock challenges
- 10. Stability Appropriate study of rock behaviour during deep excavation Making Strong observation Information must presented in tender documents Minimizing negligence related to rock behaviour as much as possible Supervising quality of infrastructure Swelling control Standup time management
- 11. Conclusion
- 12. Questions?