METHOD OF VENTILATING KIMBERLITE OPENCAST IN PERMAFROST ROCKS

METHOD OF VENTILATING KIMBERLITE OPENCAST IN PERMAFROST ROCKS

FIELD: mining industry. SUBSTANCE: ventilation shaft is sunk to limit depth of mining of kimberlite pipe by opencast, and made in opencast center is raise connected with ventilation shaft by horizontal working, and in point of their junction, chamber is driven for mounting of air heaters. Opencast i...

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Bibliographische Detailangaben
Hauptverfasser: NOVOPASHIN M.D, IZAKSON V.JU, VLASOV V.N, SLEPTSOV V.I
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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Zusammenfassung:FIELD: mining industry. SUBSTANCE: ventilation shaft is sunk to limit depth of mining of kimberlite pipe by opencast, and made in opencast center is raise connected with ventilation shaft by horizontal working, and in point of their junction, chamber is driven for mounting of air heaters. Opencast is ventilated by natural draft through workings driven in permafrost mass of rocks. Draft intensity in winter time is regulated by the degree of air heating by air heater, determined by equations of aerodynamic and thermal physics. EFFECT: reduced consumption of air draft. 1 dwgu