FIELD: mining; degassing of beds. SUBSTANCE: device for pulsing degassing of beds has hollow cylindrical body accommodating two partitions installed perpendicular to its longitudinal axis. Hermetic piston is installed between partitions. Rod system is attached to piston and one of partitions which accommodates regulating and discharge valves. Rod system consists of stop stem connected with rocker. Attached to the second partition is regulating spring connected with piston. Body walls have channel for gas discharge. Body is embraced by sealing flexible shell to form hollow communicated with channel admitting liquid agent. Located on the end of gas discharge channel is sound valve-horn. EFFECT: higher safety and efficiency of rock mass degassing due to increased radius of effect of degassing by provision of cyclic gas pressure differential in well. 4 cl
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