Adapted for sealing and insulating cavities and cracks in the solid rock mass and creating air gaps in downhole explosive charges

摘要

The appliance for compaction and insulation of cavities and cracks in solid massif and formation of air gaps in well charge of explosive substance hastightened yielding shell with elements of suspension and source of forming pressure in it for its radial expansion. Besides that the yielding tightened shell is formed by a set of hermetically closed different-type bags, those are installed one into another and rolled up to a roll, the source of pressure formation is placed inside the hermetically closed bag forming the inner surface of the roll and is arranged as separate hermetical packs, each of those is filled with one of the components of gas-generating composition; at that the hermetically closed bag forming the inner cavity of the roll has valves connecting its cavity to the cavity of its surrounding bag, and the limit of the tensile strength of a bag (?bag) is chosen as (10-15) ?pack,, where (?pack) û tensile strength limit of a pack.