METHOD TO EXPLODE ROCK MASSIFS OF VARIOUS STRENGTH Russian patent published in 2013 - IPC F42D3/04 

FIELD: mining.

SUBSTANCE: method includes drilling of vertical wells and expansion of wells inside a contour in plan of solid inclusions at sections where they cross solid inclusions. At the same time diametre of expanded sections of wells is taken on the basis of the ratio with account of the diametre of non-expanded sections of wells between limits of strength during tension and Poisson numbers v^INCL and v^DEADS, Young's moduli E^INCL and E^DEADS of solid inclusions and deads, accordingly, index of isentrope of detonation products γ and pressure of detonation products in the Jouget point Pj for the applied industrial explosive (IE).

EFFECT: higher efficiency and evenness of crushing of various-strength massifs due to provision of equality of diametres of zones of controlled crushing in deads and solid inclusions by means of taking into account a combination of main properties of deads, inclusions and applied IE.