Mining Engineering > GATE 2025 > Underground Mining
A double ended ranging drum (DERD) shearer uni-directionally cuts coal in a longwall panel having the following details:
Shearer drum diameter =1.4m
Panel dimension =1200m×200m×2.4m
Web depth =0.6m
Average cutting speed =5 m/minute
Average retreating speed =10 m/minute
Average operational delay between cuts is 2 hour. There are two production shifts, each of 8 hour duration. The number of days required for complete extraction of the panel is ______ (in integer)
Shearer drum diameter =1.4m
Panel dimension =1200m×200m×2.4m
Web depth =0.6m
Average cutting speed =5 m/minute
Average retreating speed =10 m/minute
Average operational delay between cuts is 2 hour. There are two production shifts, each of 8 hour duration. The number of days required for complete extraction of the panel is ______ (in integer)
Correct : 100
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