Here's a brief overview of what happens:
🛠️ Start of Work Process for Rock Drilling Machine in Tunnel Construction
Site Preparation
Tunnel alignment is marked.
Power supply, ventilation, and drainage systems are set up.
Safety checks are conducted.
Machine Setup
The rock drilling machine (e.g., jumbo drill, TBM, or DTH drill) is moved into position.
Drill bits are installed based on rock hardness.
The machine is calibrated for depth, angle, and pattern of holes.
Drilling Operation Begins
The machine starts drilling holes into the tunnel face.
The depth and diameter of holes depend on the blasting or excavation plan.
Dust is controlled using water spray or dust collectors.
Blasting (if applicable)
Once drilling is done, holes are filled with explosives for controlled blasting (in drill-and-blast methods).
After blasting, ventilation clears the fumes.
Excavation & Muck Removal
Loose rock ("muck") is removed using loaders, conveyors, or dumpers.
The tunnel face is inspected and stabilized.
Support Installation
Rock bolts, mesh, or shotcrete may be applied for tunnel support.
This ensures structural integrity and safety.
Repeat
The machine moves forward, and the process repeats until the tunnel is completed.
🧰 Common Types of Drilling Machines Used:
Drill Jumbo: For blast hole drilling in hard rock.
Tunnel Boring Machine (TBM): For continuous tunnel excavation.
DTH (Down-the-Hole) Drill: For deep and precise drilling.
Rotary or Percussive Drills: Depending on geology.
If you're looking for a technical checklist, animation, or machine specifications, I can provide that too. Let me know!
