FIELD: mining. SUBSTANCE: method for evaluation of tightness of isolating bulkheads consists in measurement of pressure differential on checked bulkhead and effective head on both sides of bulkhead. Then, actual pressure differential is compared with minimum permissible one for bulkheads of given type at larger value of effective head. Minimum permissible pressure differential is determined from mathematic dependence. Bulkheads are considered tight is values of actual pressure differential values equal to, or exceeding minimum permissible value. EFFECT: higher efficiency. 3 dwg, 1 tbl
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