METHOD TO CHARGE DEEP DRY WELLS WITH EMULSION EXPLOSIVE SUBSTANCE SENSIBILISED BY METHOD OF GAS GENERATION Russian patent published in 2011 - IPC F42D1/08 

FIELD: blasting.

SUBSTANCE: invention relates to the field of blast-hole drilling and may be used in various industries, using blasting in rocks with application of emulsion explosive substances (EES). In method to charge deep dry wells with emulsion explosive substance sensibilised by method of gas generation, including preparation of emulsion ES in mixing-charging machine, addition of gas generating additive into emulsion matrix and charging well with emulsion ES, according to invention, well charging is carried out in stages: at first lower charge of emulsion ES is formed with height sufficient to provide for charge tightness in bottom part, corresponding to critical diameter of emulsion ES charge detonation for this diameter of well with installation of primer in it, then charge separator is placed to lower charge of emulsion ES to transfer pressure of mass arranged above part of charge of emulsion ES at walls of well, for instance, in the form of column of cellular polystyrene with height of 4…6 diameters of well, and well charging is continued, when required, repeating procedure of charge separation into parts and arrangement of a separate primer in each part.

EFFECT: easier formation of emulsion ES charge of increased length by application of regular permanent parameters of emulsion by separation of emulsion ES charge into parts along height.

3 dwg