Quarry blasting is controlled blasting that fragments rock economically and safely into sizes suited to crushing and screening plants; the hole pattern and charge are designed for the rock structure.
Our approach
- Hole patterns and charges suited to the rock structure
- Blast designs that improve fragmentation and reduce secondary breaking
- Geotechnical parameters considered for slope stability, safe excavation and suitable fragment size
- Blasts designed according to proximity to settlements, with vibration and noise control
- USBM RI 8507 and DIN 4150-3 criteria taken as the basis
Safety
Controlled blasting systems, site arrangements in line with safety protocols and continuous monitoring aim to protect workers and the environment.
Frequently asked questions
What is the purpose of blasting in a quarry?
To fragment rock economically and safely into sizes suited to the crushing plant. Good fragmentation reduces secondary breaking.
Does blasting damage nearby structures?
Controlled blasting kept within limit values is not expected to cause structural damage. Vibration is measured and compared against criteria such as DIN 4150-3 or USBM RI 8507.
How is fragment size controlled?
Hole pattern, hole diameter, charge and delay timing are designed for the rock structure to approach the target fragment size.
How is flyrock prevented?
Correct burden selection, adequate and clean stemming, avoiding overcharging, a correct firing sequence and safety distances reduce flyrock risk.