Podcast
Questions and Answers
What is one of the key factors that determine the location of a Central Ore Shoot (COS)?
What is one of the key factors that determine the location of a Central Ore Shoot (COS)?
- Orebody depth
- The diameter of the drill rig
- Access constraints (correct)
- The angle of arc of the drillholes
Why is fanning of blastholes into unbroken ground to strip a slot usually unsuccessful?
Why is fanning of blastholes into unbroken ground to strip a slot usually unsuccessful?
- The blast holes are likely to pull to the full design depth (correct)
- The drill rig is not capable of drilling across the entire orebody width
- It increases the charging time for the holes
- The angle of arc becomes exaggerated with increasing angles away from the void
How are Trough Undercut Blasting rings (TUCs) drilled?
How are Trough Undercut Blasting rings (TUCs) drilled?
- Limited to a length of 30m
- Using upholes inclined at 45°
- By promoting the best rill angle at the stope drawpoints (correct)
- Small rings that maximize the charging time
Why are inclined (dumped) TUC rings required in mining operations?
Why are inclined (dumped) TUC rings required in mining operations?
What is a significant factor in minimizing the angle of arc that drillholes are required to cover?
What is a significant factor in minimizing the angle of arc that drillholes are required to cover?
What is a common design characteristic of Central Ore Shoots (COS) in narrow vein orebodies where bench stoping is practiced?
What is a common design characteristic of Central Ore Shoots (COS) in narrow vein orebodies where bench stoping is practiced?
Why is fanning of blastholes into unbroken ground to strip the slot commonly considered unsuccessful in blasting operations?
Why is fanning of blastholes into unbroken ground to strip the slot commonly considered unsuccessful in blasting operations?
What is the purpose of designing Trough Undercut Blasting rings (TUCs) with limited lengths in mining operations?
What is the purpose of designing Trough Undercut Blasting rings (TUCs) with limited lengths in mining operations?
Why are drill rigs required to be capable of drilling across the entire orebody width with near parallel holes in mining operations?
Why are drill rigs required to be capable of drilling across the entire orebody width with near parallel holes in mining operations?
What is a key design consideration for Trough Undercut Blasting rings (TUCs) in relation to promoting optimal drilling angles at stope drawpoints?
What is a key design consideration for Trough Undercut Blasting rings (TUCs) in relation to promoting optimal drilling angles at stope drawpoints?
