10 Questions
What is the typical diameter range for the upholes drilled in Trough Undercut Blasting (TUC) design?
70–89 mm
Why are Trough Undercut Blasting (TUC) rings designed to be small?
To promote optimal rill angle at the stope drawpoints
Why are Trough Undercut Blasting (TUC) rings inclined (dumped)?
To facilitate charging of holes at the edge of a stope
What is the maximum length limit for Trough Undercut Blasting (TUC) upholes?
15 m
What is the purpose of shaping Trough Undercut Blasting (TUC) to promote the best rill angle?
To protect the rock mass at the brows
Why are Trough Undercut Blasting (TUC) rings limited to a length of 15 m?
To ensure conventional blow-loading of explosives
What is the significance of drilling TUC upholes at an inclination of 70 degrees?
To promote the best rill angle at the stope drawpoints
Why are Trough Undercut Blasting (TUC) rings designed to be small?
To minimize the charging time
What is the purpose of requiring inclined (dumped) TUC rings?
To facilitate charging of holes at the edge of a stope
What is the diameter range for the upholes drilled in Trough Undercut Blasting (TUC) design?
80–95 mm
Learn about the design of Trough Undercut Blasting (TUC) in underground mining operations, including drilling specifications and shaping for optimal blasting results. Understand the importance of TUC rings in stope blasting techniques.
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