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.
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