Mining Engineering > GATE 2022 > Underground Coal Mining
In a longwall face, the full seam thickness of 3 m is cut by a shearer with a web of depth 0.7 m. The hauling speed of shearer during cutting is 12 m/min. The trough cross-section of AFC is 0.4 m2 and the average loading coefficient is 0.7. In order to evacuate coal from the face without spillage, the speed of AFC, in m/s is ________. (round off to one decimal place)

Correct : 1.4

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Related Topics

longwall face mining shearer cutting speed AFC speed calculation mining engineering GATE 2022 seam thickness cutting web depth cutting loading coefficient AFC coal evacuation speed GATE mining engineering 2022 AFC speed without spillage

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