Method for controlling longwall operations using boundary layer recognition
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United States of America Patent
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Dec 17, 2013
Grant Date -
Jan 6, 2011
app pub date -
Feb 19, 2008
filing date -
Feb 19, 2008
priority date (Note) -
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Abstract
A method for controlling longwall mining operations, having a face conveyor, at least one extraction machine, and a hydraulic shield support, in underground coal mining. At least one sensor is disposed on the shield support frames for acquiring solid-borne noise data generated by the engagement of the extraction machine in coal and/or country rock. A cut of the extraction machine into the country rock is determined in a downstream computer on the basis of recorded vibration data that corresponds to the generated solid-borne noise.
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