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2 091 584

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C1

(51)

IPC

(21) (22)

Application

94006946/03, 1994-02-28

(22)

Actual filing date

1994-02-28

(45)

Published

1997-09-27

(72)

Inventor

Mashkovtsev I.L.Saumitra N.D.Choudkhuri K.

(73)

Holder

Rossijskij Universitet Druzhby Narodov

METHOD OF ROOF CONTROL IN MULTILAYER SIMULTANEOUS EXTRACTION OF THICK GENTLY SLOPPING COAL SEAM AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

Abstract RU 2091584 C1

FIELD: mining industry. SUBSTANCE: the essence of invention consists in that simultaneously with separation of coal in each layer, laid over filling material is metal net held by ropes from ground surface, distance between them being 2-3 spaces of caving of immediate roof. members of support of slice drifts are interconnected by hinges and held by ropes and additionally by anchors of roof of upper layer installed in intervals between ropes. EFFECT: higher efficiency. 2 cl, 12 dwg

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RU 2 091 584 C1

Authors

Mashkovtsev I.L.

Saumitra N.D.

Choudkhuri K.

Dates

1997-09-27—Published

1994-02-28—Filed

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