DRILLING-AND-BLASTING CHARGE Russian patent published in 1999 - IPC

FIELD: explosives. SUBSTANCE: invention relates to mining performed, for example, when destroying out-of-size boulders, brick and concrete constructions, dislodging work stones and cement blocks, and when tunneling and can be used in precious and semiprecious stone mining. Charge including principal reagent is supplemented by a combustible reagent, in particular, a powdered reagent interacting with principal reagent to give burning or destruction, reaction time depending on ratio of the two reagents. For burning reaction, principal-to-combustible reagent ratio is (1.0-1.5):1 and for destruction reaction 1:(0.1-1.0). Principal reagent may be, for example, represented by ammonium hydrocarbonate or sodium carbonate (destruction) or sodium hypochlorite (burning). Combustible reagent may consist of at least one combustible polymer material (polyolefin, polyamide, polyvinylchloride, or their derivatives) and metal materials (aluminum, magnesium, titanium, or their alloys). EFFECT: increased energetic efficiency and environmental safety; reduced cost and simplified manufacturing procedure. 12 cl