Retained to aid and assist with the reinforcement and jet grouting of a collapsed coal mine located between 36m and 30m below surface.
Jet Grouting of a collapsed coal mine located between 36m and 30m below surface:
- Pre-drilling of 10” reflow conduits 24m deep each
- Double fluid Jet Grouting of up to 30m3 per hole between 36m and 30m
- Spoil and reflow management of up to 50m3 per day
- Working in sub-zero temperatures up to -40 degrees Celsius
- Working adjacent to 500kV overhead lines
- Cement Bentonite grout mix for compressive strength control and to minimize bleed.
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