METHOD OF ROCK BREAKAGE Russian patent published in 1997 - IPC

FIELD: mining { applicable in splitting of oversize breaking-off the blocks from rock mass, mining of building stone. SUBSTANCE: method of rock breakage includes drilling of boreholes and their filling with loose material or monolithic material which becomes loose under the action of mechanical load. Introduced into loose material are wedges to split the rock. In so doing, simultaneously with introduction of wedges into loose material, cut in the walls of boreholes in the plane of anticipated rupture are grooves. EFFECT: higher efficiency. 2 cl, 3 dwg