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2 081 331

(13)

C1

(51)

IPC

(21) (22)

Application

95118552/03, 1995-10-31

(22)

Actual filing date

1995-10-31

(45)

Published

1997-06-10

(72)

Inventor

Smirnov V.A.Krotov N.V.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Gornoj Geomekhaniki I Markshejderskogo Dela Vnimi

METHOD OF INSTALLING SCREW-IN ANCHOR Russian patent published in 1997 - IPC

Abstract RU 2081331 C1

FIELD: mining industry. SUBSTANCE: anchor is used for supporting underground mine workings. Hole is drilled in rock mass to be stabilized, then spiral groove is made in inner wall of bore-hole. Before screwing anchor in drilled hole, easily compressible member is inserted into hole. This member is impregnated with antifriction liquid which as anchor is being screwed in bore-hole fills spiral clearance between bore-hole wall and anchor stem. EFFECT: high efficiency. 2 cl, 1 dwg

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RU 2 081 331 C1

Authors

Smirnov V.A.

Krotov N.V.

Dates

1997-06-10—Published

1995-10-31—Filed

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