METHOD TO BLAST ROCKS WITH SOLID INCLUSIONS Russian patent published in 2014 - IPC F42D3/04 

FIELD: mining.

SUBSTANCE: method includes drilling of main and additional wells in a massif from enclosing rocks and solid inclusions. Selection of parameters for charges in the main wells is carried out on the basis of enclosing rocks, and selection of parameters for solid inclusions - based on the condition of equality of diameters of ZRD in enclosing rocks and solid inclusions. At the same time selection of parameters for the charge in additional wells is carried out by speed of detonation D₀₁ and diameter d₀₁ from the ratio with account of breaking tension limits $${\sigma }_{\text{tens}}^{\text{incl}}$$ and $${\sigma }_{\text{tens}}^{\text{encl}},$$ Poisson coefficients v^incl and v^encl, Young moduli E^incl and E^encl, porosities P_incl and P_encl, solid inclusions and enclosing rocks, accordingly, the index of isentrope of detonation products γ₂, parameter of adiabat ζ and pressure of detonation products in the Jouguet point P₀ of the applied main type of PVV.

EFFECT: increased efficiency and even grinding of massifs of different strengh due to provision of equality of diameters of areas of controlled grinding in enclosing rocks and solid inclusions by taking into account of a combination of main properties of enclosing rocks, inclusions, diameter of a charge and a used PVV.

2 dwg