Blasthole Drilling
We provide blasthole drilling services for mining, quarrying, and construction projects, using high-performance rigs, experienced operators, and precise techniques to create optimal blast patterns and fragmentation.Blasthole drilling, a crucial technique in mining and construction, involves creating holes in rock or earth to facilitate various objectives. Here are the key points:
Purpose & Applications:
- Mining: Blasthole drilling is essential for extracting minerals, ores, and other valuable resources from the ground.
- Construction: It aids in creating foundations, tunnels, and infrastructure.
- Quarrying: Used to break and move rock efficiently.
Drilling Methods:
- Rotary Drilling: Common for holes larger than 203 mm (8″) diameter. It uses high pull-down force, rotation, and compressed air to remove rock cuttings.
- Down-The-Hole (DTH) Drilling: Effective for loose and fractured material. Percussion occurs at the bottom of the drill string, allowing deeper drilling.
- Top Hammer Drilling: Ideal for hard material and small to medium hole sizes.
Design Considerations:
- Blast Patterns: Determined by burden (distance between holes), spacing, and stemming (material placed in the hole).
- Power Factor: Balancing cost and energy efficiency.
- Hole Diameter: Influenced by material size requirements and loading equipment.