BACK-FILLING CONSTRUCTION METHOD OF PIPE LINING

Title:

BACK-FILLING CONSTRUCTION METHOD OF PIPE LINING

Document Type and Number:

Japanese Patent JP2843959

Kind Code:

B2

Abstract:

PURPOSE: To easily perform back-filling at once over a wide range without generating a deficient part while dispensing with the secondary processing of a liner by arranging a curved spacer having openings to the inner surface of a pipe and forming the liner on the spacer and injecting a back-filling material into the gap formed by the spacer.between the liner and the pipe.
CONSTITUTION: A curved spacer S having openings 20 is arranged to the entire inner surface of a pipe P and a liner L formed by spirally winding a strip 1 having ribs 11 is applied to the rear surface of the pipe P to form a gap C between the pipe P and the liner L and a back-filling material is injected into the gap C to be applied to the rear surface of the liner L. Since the spacer S has a curved shape, the openings 20 are dispersed not only in the pipe length direction of the gap C on the rear surface side of the liner L but also in the radius direction thereof to achieve back-filling over a wide range. The injection of the back-filling material is performed from the end surface of the gap C directly or by inserting a hose H in the gap C. As a result, the injection of the back-filling material is easily performed by the operation in the outside of the pipe and secondary processing such as the perforation of the liner is dispensed with.

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Inventors:

MYAZAKI YASUO
KAMIIDE AKIRA
OZEKI NAOYA
HAZAMA JUJI
IMAKUBO KENICHIRO

Application Number:

JP24924893A

Publication Date:

January 06, 1999

Filing Date:

October 05, 1993

Export Citation:

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Assignee:

OOSAKA BOSUI KENSETSUSHA KK
KUBOTA KENSETSU KK
KUBOTA KK

International Classes:

E03F3/06; B29C63/26; B29C63/32; F16L55/16; (IPC1-7): B29C63/32; F16L55/16

Domestic Patent References:

JP4103337A
JP142219A
JP4198595A
JP63194029A
JP311641B2

Attorney, Agent or Firm:

Eiji Saegusa (4 others)

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