DEVICE FOR REDUCTION OF INTENSITY OF SHOCK AIR WAVE Russian patent published in 2009 - IPC E21F17/107 

FIELD: mining engineering.

SUBSTANCE: invention relates to facilities field, providing security level increasing in mining engineering, and can be used for temporary isolation of mine opening and protection of staff. Device includes inflatable crosspiece made of flexible, airtight material, outfitted by gate valves and autonomous source of compressed gas feeding. Crosspiece is implemented in the form of isolated, oriented lengthwise mine opening axisymmetric units, consisting of set of flexible inflatable tanks-bays. Additionally units are in layers installed in cross section of mine opening, and symmetry axis in each following layer is shifted relative to axis of previous layer by value, equal to half of placement pitch in unit of inflatable tanks-bays.

EFFECT: increasing of security level of rescue operations implementation at liquidation of incidents, providing of shaping mobility of inflatable crosspiece and reliable sealing of mine opening of any section with complex relief of walls.

5 cl, 2 dwg