The invention discloses a
coal caving method based on a
coal seam
geographic information system, belongs to the technical field of
automatic control of fully mechanized caving faces, and relates to hydraulic support
coal caving opening parameters and coal caving step
pitch control. According to the coal caving method based on the coal seam
geographic information system, a spatial position relationmodel of a
coal mining machine, a hydraulic support and a scraper conveyor is established, a coal and
gangue recognition system and a coal flow detection
system are established on a fully mechanizedcaving face, geographic information such as the coal and rock trend and the inventory of the working face is detected through the GIS technology, and a coal and rock distribution condition diagram ofthe whole working face is obtained;each coal caving parameter is determined by utilizing the coal and rock distribution condition diagram and historical coal caving
database information, and the coalcaving parameters are recorded and corrected according to the
gangue content and the top coal caving rate obtained by the coal and
gangue recognition system and the coal flow detection
system after each round of coal caving; and dynamically optimizing and correcting the coal caving parameters are carried out, so that the coal caving control method is automatically adjusted according to the thickness change of a coal seam, and the application adaptability of the fully mechanized caving technology is higher.