FIELD: mining and construction. SUBSTANCE: method includes drilling of hole, installation of extended working member of hydraulic breaking device, high-pressure air hose and pneumatic cartridge, sealing of hole mouth with packer. To form cracks, pressure in breaking device is raised. After pressure drop in breaking device, static air pressure is raised in high-pressure air hose, air is supplied to hole up to pressure stabilization in extending working member, and compressed air is supplied to pneumatic cartridge up to its operation. Supply of compressed air is continued up to stabilization of pressure in extending working member. Supply of compressed air tp pneumatic cartridge is discontinued only after breakage of monolithic object. EFFECT: higher efficiency.
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