Corrugated Tunnels – Grosvenor
Grosvenor Drift Tunnels
approx. 4800m2 Applied to corrugated steel plate tunnels
CV Drift Tunnel under construction
CV Drift Tunnel – cold spray-applied membrane application
M&M Tunnel ready for coating
M&M Tunnel with cold spray-applied membrane coating
The situation: The Grosvenor Coal mine, some 5 km north of Moranbah in the Central Queensland coalfields, had new transport (M&M) and conveyor (CV) drift tunnels being constructed and they required waterproofing to protect them from both leakage and rust.
The solution: The outer surfaces of the tunnels were sprayed with a coating of a cold spray-applied membrane to a nominal thickness of 2mm. The result was a smooth, even, waterproof, cold spray-applied membrane surface over both of the tunnels, ready for backfilling.
