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2 119 054

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C1

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IPC

(21) (22)

Application

94003790/03, 1994-02-01

(22)

Actual filing date

1994-02-01

(45)

Published

1998-09-20

(72)

Inventor

Kulakevich Ja.S.Kolganov E.V.Abdrakhmanov V.I.Dorin N.B.Sakhipov R.Kh.Smirnov S.P.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut

METHOD FOR DESTRUCTION OF ORE PLUGS Russian patent published in 1998 - IPC

Abstract RU 2119054 C1

FIELD: mining industry. SUBSTANCE: this relates to destruction of ore plugs in ore chutes, draw holes, etc. According to method, destruction of ore plugs is effected by firing one or several shaped charges filled with shattering explosives with mass of 1-30 kg, density of 1250-1900 kg/cu.m, and detonation velocity of 4500-8300 m/s. Shaped charge is installed at distance of 1-50 m from lower edge of ore plug. Shaped charge is oriented with base of its metallic shape lining directed towards ore plug to be destructed. Thickness of shape charge lining is 0.002-0.01 m, mass is 0.05-5 kg, height over internal surface is equal to 0.05-0.3 of diameter of shape charge lining. EFFECT: higher efficiency. 8 dwg, 5 ex

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RU 2 119 054 C1

Authors

Kulakevich Ja.S.

Kolganov E.V.

Abdrakhmanov V.I.

Dorin N.B.

Sakhipov R.Kh.

Smirnov S.P.

Dates

1998-09-20—Published

1994-02-01—Filed

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