PROTECTION METHOD AGAINST AIR BLAST WAVE AND EXPLOSION PRODUCTS Russian patent published in 2011 - IPC E21F17/103 E21F5/00 

FIELD: blasting operations.

SUBSTANCE: method involves construction of obstacle for example cross piece in the working on movement way of air blast wave, at the outlet of zone. Obstacle shall be made from natural or artificial pillar so that free zigzag-shaped passage can be left between the solid mass outline and constructed pillar. Pillar is made so that it can be fully destructed; at that, volume of destructed mass of the pillar provides full blockage of the working. Pillar outline bordering on the solid mass is loosened with drilled wells or by arranging the easily destructed and removed material.

EFFECT: providing reliable, almost instantaneous separation of emergency section from environment at the moment of emergency explosion in it, free access to potential dangerous section at its operation in normal mode.

4 cl, 3 dwg