Mining Methods and Machinery · Mining Machinery · 2 marks · Numerical answer
A shearer cuts a 3 m seam with 0.7 m web at 12 m/min. AFC trough area is 0.4 m² with average loading coefficient 0.7. Find conveyor speed needed without spillage in m/s, to one decimal.
Volumetric cutting rate is 3×0.7×12=25.2 m³/min=0.42 m³/s. Effective loaded conveyor area is 0.4×0.7=0.28 m². Equating conveyor capacity Av to cutting rate gives v=0.42/0.28=1.5 m/s. No separate swell correction is specified in the source.
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