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2 064 999

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C1

(51)

IPC

(21) (22)

Application

93036944/03, 1993-07-19

(22)

Actual filing date

1993-07-19

(45)

Published

1996-08-10

(72)

Inventor

Matchenko N.M.Prokhorov N.I.Matchenko O.N.

(73)

Holder

Tul'Skij Gosudarstvennyj Tekhnicheskij Universitet

METHOD FOR WIDENING BASES FOR FOUNDATION FOOT Russian patent published in 1996 - IPC

Abstract RU 2064999 C1

FIELD: civil engineering. SUBSTANCE: method includes descending device in mine working to widen its base, pressing member-expander in walls of mine working using strut body with wedge-shaped lengthwise section, and withdrawal member-expander from the formed cavity. Two cylinders with sum of diameters equal to trench width are used to widen bases of trench-type mine working. The cylinders are placed along walls of the trench. Hydraulic cylinders are used as drive to press in member- expander. EFFECT: high efficiency. 2 cl, 2 dwg

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RU 2 064 999 C1

Authors

Matchenko N.M.

Prokhorov N.I.

Matchenko O.N.

Dates

1996-08-10—Published

1993-07-19—Filed

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