PROCESS OF PREPARING BOTTOMS OF CHAMBERS OR BLOCKS Russian patent published in 2001 - IPC

Abstract RU 2174601 C1

FIELD: mining industry. SUBSTANCE: invention is related to underground working of ore deposits. Process includes working of trench, paired delivery workings and single-way draw holes with intake windows arranged in staggered order. Delivery workings in each pair are placed at different levels. Release funnels are located at upper level and lower level has trench with intake windows. EFFECT: increased stability of release and delivery workings, decreased cost of their maintenance, reduced losses and contamination of ore. 1 cl, 4 dwg

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RU 2 174 601 C1

Authors

Burmin G.M.

Pokrovskij B.V.

Ermak G.P.

Ehjsmont S.N.

Korochkin S.A.

Shutskij L.A.

Dates

2001-10-10—Published

2000-02-15—Filed