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Vol 58 Iss. 1
Pages:
145-149
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RUS
Article

Experience of inter-chamber pillar mining after consolidation of the primary chambers' backfill

Authors:
Yu. L. Minaev
A. V. Karpunin
A. G. Vasiliev
Date submitted:
1968-07-28
Date accepted:
1968-09-07
Date published:
1969-05-05

Abstract

In 1966 at the Kaula-Kotselvaara mine of the Pechanganickel Combine, experimental work was carried out on the development of an inter-chamber pillar located between the walls of the cement-reinforced backfill. Pilot works were carried out in a 6-8 m thick section of the ore body with a dip angle of 26-30°. The intervening rocks - phyllites - are partially broken by transverse fractures. In general, the ore and rock are stable. Ore strength coefficient is 8-12, rock strength coefficient is 10-12. Volume weight of the ore is 3.2 t/m3 and of the embedding material is 2.8 t/m3.

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