METHOD TO EXPLODE ROCK MASSIFS OF VARIOUS STRENGTH

摘要

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 wellsis taken on the basis of the ratio with account of the diametre of non-expanded sections of wellsbetween limits of strength during tensionandPoisson numbers vand v, Young's moduli Eand Eof solid inclusions and deads, accordingly, index of isentrope of detonation products ? 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.