FIELD: mining industry. SUBSTANCE: compensator has body 1 with, at least one hollow 3 air-sealed by at least, one protective member in form of breaking membrane 4 and flexible plug 5. Body 1 is made in form of rod, and hollows 3 in form of noncommunicating blind channels. When perforator charges are blasted the shock wave destroys protective members 4 and 5 and diminishes in force spending its energy for this destruction. Cement stone out of perforation interval does not affected. Compensator preserves its function even in cases of depressurization of several hollows 3. EFFECT: higher reliability in operation and simplified design. 1 dwg
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