Method for controlling longwall operations using boundary layer recognition
AssigneeRAG Aktiengesselschaft
InventorsMartin Junker, Armin Mozar
Life of this patent
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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.
Claims9
A method for controlling a longwall mining operation in underground coal mining, including the steps of:
- providing a face conveyor;
- providing at least one extraction machine;
- providing a hydraulic shield support frame;
- providing at least one sensor on said shield support frame;
- acquiring, with said at least one sensor, vibration data that corresponds to solid-borne noise generated by an engagement of said at least one extraction machine in coal and/or country rock, wherein said vibration data is transmitted in a country rock layer from a point of engagement of said at least one extraction machine until said shield support frame rests against the country rock;
- providing a downstream computer;
- and
- determining, in said downstream computer, a cut of said at least one extraction machine into the country rock on the basis of said acquired vibration data.
Dependencies are inferred from the claim text.