FIELD: mining.
SUBSTANCE: attachment of mine workings cupola is performed by means of backfilling of its space using pneumatic bottles. At that pass to cupola is formed in roof and bearing floor is made at level of roof beam of mine workings support. Pneumatic bottles are arranged above support through pass opening at cupola outlet, and then they are filled with compressed air. When cupola space is filled in sequence with pressurised pneumatic bottles, pass opening is closed.
EFFECT: simplifying technology of mine workings cupola backfilling and increasing safety level.
1 dwg
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| PNEUMATIC CHOCK | 0 |
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SU658287A1 |
| METHOD TO SAFEGUARD DEVELOPMENT OPENINGS | 2010 |
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RU2441164C1 |
