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2 017 962

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C1

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IPC

(21) (22)

Application

4819109/03, 1990-04-24

(22)

Actual filing date

1990-04-24

(45)

Published

1994-08-15

(72)

Inventor

Zakharov G.M.Kazakov V.A.Ryzhkov V.V.

(73)

Holder

Institut Gornogo Dela Im.A.A.Skochinskogo

METHOD FOR MINING THICK STEEPLY DIPPING BEDS WITH SELF-CEMENTING FILL Russian patent published in 1994 - IPC

Abstract RU 2017962 C1

FIELD: coal industry. SUBSTANCE: coal is extracted by strips and coal dump is formed at hanging wall. Prior to forming coal dump, perforated pipeline is laid, after hardening of fill, water is supplied through pipeline under pressure to saturate, wash out dump coal and to carry pulp to working surface, forming thus hollow under cast self-cementing fill. In case of coal blocking in hollow, built up in perforated pipeline is moving front of fluid pressure. EFFECT: higher efficiency. 2 cl, 8 dwg

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RU 2 017 962 C1

Authors

Zakharov G.M.

Kazakov V.A.

Ryzhkov V.V.

Dates

1994-08-15—Published

1990-04-24—Filed

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