FIELD: mining, particularly methods or devices for dislodging with or without loading.
SUBSTANCE: method involves drilling well; filling well with liquid and powder material; forming cracks in three planes simultaneously, wherein the planes pass through well axis and extend at 90-180° angle one relatively another. The cracks are created by impact waves applied to liquid with rod accelerated in free fall mode. Powder material is used for crack propping. Device comprises hollow body, rod with wedges connected to outer surfaces of rod wings and installed on the body, sealing elastic bush arranged from outer body side. One body end terminates in collet. Wings are installed along side edges of rod wings and define sharpened tips as the result of mutual contact thereof. Another body end is threadedly connected to pipe adapted to receive rod with annular extension. Distance member, which spaces apart collet wings, is installed in the body so that it may slide in longitudinal direction towards free end of the body. Sealing elastic bush is put on the body from collet side.
EFFECT: improved production well efficiency, rock piece separation from massif and elastic wave emission, increased rock cutting efficiency.
5 cl, 4 dwg
