QUASAR-METHOD BLAST DESTRUCTION OF LARGE-SIZED OBJECTS AND QUASAR-CHARGES FOR ITS REALIZATION Russian patent published in 2002 - IPC

FIELD: blasting operations, applicable in blast destruction of large-sized objects, for example, slag-cast iron scraps. SUBSTANCE: method consists in forming of blast-holes by axially symmetric shaped charges, loading of blast-holes with explosives and tamping of the free volume of blast-holes. The axially symmetric shaped charge has a cylindrical or cylinder-tapered body with a shaped recess. An explosive in the state of liquid aggregation formed in situ is used as the explosive. The blast-hole or deep- hole charge contains an explosive charge and a blast means located in the blast-hole. Use is made of an explosive in the state of liquid aggregation, which is positioned in the blast-hole in rectilinear or several times folded in a stack sections of an elastic envelope, whose ends are sealed. EFFECT: reduced cost of operations in blast destruction of large-sized objects. 5 cl