What does the term Charge refer to in blast design?

What does the term Charge refer to in blast design?

• A. Quantity of explosives to be detonated in segregated position in blast design
• B. Delay period before detonation
• C. Height of the blast
• D. Type of detonating cord used

Answer: (A)

Charge is the amount of explosive placed in a single blast position or hole. It represents the energy that will be released at that location and is chosen to achieve the desired rock breakage while controlling fragmentation and vibrations. The weight per hole (or per segregated position) is determined based on rock properties, hole diameter, burden, spacing, and the initiation method. The delay period deals with timing, the height (or burden) relates to the blast geometry, and the detonating cord type relates to the initiation system—these are separate aspects from the explosive quantity. So, the term refers specifically to the quantity of explosives to be detonated in a segregated position in the blast design.

Charge is the amount of explosive placed in a single blast position or hole. It represents the energy that will be released at that location and is chosen to achieve the desired rock breakage while controlling fragmentation and vibrations. The weight per hole (or per segregated position) is determined based on rock properties, hole diameter, burden, spacing, and the initiation method. The delay period deals with timing, the height (or burden) relates to the blast geometry, and the detonating cord type relates to the initiation system—these are separate aspects from the explosive quantity. So, the term refers specifically to the quantity of explosives to be detonated in a segregated position in the blast design.