METHOD FOR SEALING AND PLUGGING OF HOLE MOUTH OF CASED HOLES Russian patent published in 1994 - IPC

Abstract RU 2012773 C1

FIELD: coal mines. SUBSTANCE: during equipment of hole 5, the hole mouth is deepened in filled ground to form working chamber 1. Casings 7 and 8 are additionally fastened by cramps 9 and 10 to hole surface casing 4. Hole clearance is sealed through specially installed injecting tubes 12 and 13 by injection at pressure. After installation of equipment, working chamber 1 and installed equipment are preserved with subsequent filling of chamber with water-retaining solution - water swelling polymeric mineral composite 24. From atop the working chamber is closed by metal patch 23. EFFECT: higher efficiency in provision of reliable sealing. 2 cl, 1 dwg

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RU 2 012 773 C1

Authors

Chuprikov A.E.

Dates

1994-05-15—Published

1991-06-17—Filed