Computer · Tunnel Engineering
In compressed air tunneling, the minimum volume of free air provided per minute is generally recommended as:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16 m3 per hour per m2 of face area
- 220 cu ft per minute per sq ft of face area✓
- 310 m3 per minute per m2 of face area
- 410 cu ft per second per sq ft of face area
Correct answer
20 cu ft per minute per sq ft of face area
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