METHOD FOR FORMATION OF DISPERSED EXPLOSIVE CHARGE IN WELL Russian patent published in 2020 - IPC F42D1/08 F42D3/04 

FIELD: mining.

SUBSTANCE: invention relates to mining industry, in particular, to explosive operations with application of loose explosive substances (ES) charged to drilled dry wells from wellhead. Method for formation of dispersed charge of explosive substance in well includes arrangement of low-density cavities made in empty well and installation of one or several fighters, filling of explosive substance from wellhead of charged well. Low-density cavities are discharged into the well. Low-density cavities are of elongated shape with linear size not less than 3 times larger than the diameter of the charged well, with diameter of ends larger than 1/2 of the well diameter. Depending on the well depth and diameter, as well as the diameter of low-density cavities, one or several fighters are placed in the well after dropping either the entire design number of low-density cavities or only a part, and the remaining low-density cavities are dropped over installed primers.

EFFECT: invention allows simplifying the formation of dispersed well charges of explosives, reducing specific consumption of explosives, reducing seismic action and amount of harmful emissions to atmosphere.

1 cl, 1 tbl, 1 dwg