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2 173 386

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Application

99125789/03, 1999-12-02

(24)

Start date

1999-12-02

(22)

Actual filing date

1999-12-02

(45)

Published

2001-09-10

(72)

Inventor

Burmin G.M.Pokrovskij B.V.Nikitin V.N.Ehjsmont S.N.Ermak G.P.Matveev I.F.Konjakhin V.I.Filippov P.A.

(73)

Holder

Oao Nauchno-Issledovatel'Skij Gornorudnyj Institut"

METHOD OF MINERAL MINING UNDER CONDITIONS OF HIGH ROCK PRESSURE Russian patent published in 2001 - IPC

Abstract RU 2173386 C2

FIELD: mining industry; applicable in underground mineral mining with use of drilling and blasting operations. SUBSTANCE: method includes formation of vertical compensation microchambers located by square pattern with square side determined by offered formula. Microchambers are driven through entire height of horizon with a base in lower part in the form of truncated cone up to 1/3 of height of mined ore mass with volume ensuring loosening factor of 1.3-2. Breakage of rock mass onto compensation space and clamping medium is carried out by vertical concentrated charges of explosives located between microchambers in central part of districts of ore mass limited by microchambers with effective range determined by offered formula. EFFECT: reduced losses of holes, improved safety of mining operations due to preserved stability of caved ore mass. 3 cl, 2 dwg

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RU 2 173 386 C2

Authors

Burmin G.M.

Pokrovskij B.V.

Nikitin V.N.

Ehjsmont S.N.

Ermak G.P.

Matveev I.F.

Konjakhin V.I.

Filippov P.A.

Dates

2001-09-10—Published

1999-12-02—Filed

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