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Title:
METHOD FOR REPLACING EXISTING PIPE
Document Type and Number:
Japanese Patent JP2004003209
Kind Code:
A
Abstract:

To provide a method for replacing an existing pipe superior in practicability for arranging a new pipe at an appropriate position by excavating the periphery of the existing pipe with a closed excavator in a stable state and performing appropriate excavation.

The method for replacing the existing pipe includes: excavation of the periphery of the existing pipe 1 continuously providing a plurality of pipe bodies 1a toward the edge part of the existing pipe 1 with an excavator; the new pipe 2 provided on the outside of the existing pipe 1 by successively providing a pipe body 2a with a larger diameter than the existing pipe 1 in the excavated part; and removal of the existing pipe 1. The closed excavator 7 is employed as the excavator, and the periphery of the existing pipe 1 is excavated by introducing a liquid matter to a cutting face 10 as the closed excavator 7 and employing a cutting face stable mechanism stabilizing the cutting face 10.


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Inventors:
TSURUKI ISAO
ISHIZUKA SENJI
TAKANO OSAMU
MARUTA YASUSHI
Application Number:
JP2002160480A
Publication Date:
January 08, 2004
Filing Date:
May 31, 2002
Export Citation:
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Assignee:
FUKUDA CORP
International Classes:
E21D9/06; F16L1/024; (IPC1-7): E21D9/06; F16L1/024
Domestic Patent References:
JP2002013386A2002-01-18
JPH05287984A1993-11-02
JPH07173989A1995-07-11
JPS63189593A1988-08-05
JPH03206290A1991-09-09
JPS62194396A1987-08-26
JPH0489992A1992-03-24
JPH03288080A1991-12-18
JPH06288175A1994-10-11
JPH0419358B21992-03-30
JP2002038872A2002-02-06
JPH10252385A1998-09-22
JP2000303777A2000-10-31
JPH08246787A1996-09-24
Attorney, Agent or Firm:
Tsuyoshi Yoshii
Masae Yoshii



 
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