FIELD: mining.
SUBSTANCE: invention refers to mining industry, and namely to automatic protection systems of gas-air wells against explosions. It includes an interconnecting channel between gas-air mixture flow switch and gas pipeline from the mouth of gas-air well, pyrometric transmitters with objectives, explosion suppressive devices with nozzles and a control unit. Inside the interconnecting channel between pyrometric transmitters and gas pipeline from the mouth of gas-air well there located are front and aft doors. Air bags are located between their shutters. Valve is located on outer side of the interconnecting channel between front and aft doors.
EFFECT: invention provides damping of inflammations and explosions at the initial stage, prevents repeated explosions, improves safety of mining works, increases effectiveness of combined ventilation.
3 dwg
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