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2 047 832

(13)

C1

(51)

IPC

(21) (22)

Application

5049731/03, 1992-06-29

(22)

Actual filing date

1992-06-29

(45)

Published

1995-11-10

(72)

Inventor

Raskil'Dinov Bakchan Uteveevich[Kz]Jusupov Khalidilla Abenovich[Kz]

(73)

Holder

Kazakhskij Natsional'Nyj Tekhnicheskij Universitet

METHOD TO FORM KERF CAVITY Russian patent published in 1995 - IPC

Abstract RU 2047832 C1

FIELD: mining. SUBSTANCE: boring central. peripheral, and shortened holes, sectional charging peripheral bore holes using separation of the sections with air spaces. Central bore hole is made as compensating one. Explosive charges in shortened blast holes are placed in bottom parts, opposite air spaces of the sectional charges in peripheral bore holes, with bottom sectional charges exploded after initiation of sectional charges in hole mouth. EFFECT: high speed tunnelling. 2 cl, 4 dwg

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RU 2 047 832 C1

Authors

Raskil'Dinov Bakchan Uteveevich[Kz]

Jusupov Khalidilla Abenovich[Kz]

Dates

1995-11-10—Published

1992-06-29—Filed

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