Hole drilling and sealing process method for extraction and joint cutting device used in cooperation with hole drilling and sealing process method

The invention discloses an extraction drilling hole sealing process method and a joint cutting device used in cooperation with the extraction drilling hole sealing process method, and belongs to the technical field of coal gas extraction. Extraction drilling holes are constructed in a roadway along a coal body, and plastic zone hole periphery cracks and elastic zone hole periphery cracks are generated around the drilling holes; constructing at least one group of hole periphery annular kerfs on a pre-sealing hole section in the extraction drilling hole by utilizing a kerf device; a hole packer and an extraction pipe are installed in the position near the pre-sealing section of the extraction drill hole, and a hole sealing material is injected into a hole sealing section formed by the hole packer under pressure; the extraction drill holes and the annular kerfs are filled with hole sealing materials correspondingly, a drill hole injection hole sealing material body and an annular kerf injection hole sealing mate