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Title:
INSTALLATION METHOD OF WATER-FILLING WELL
Document Type and Number:
Japanese Patent JP2016148190
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an installation method of a water filling well capable of preventing water filled in the ground from flowing out.SOLUTION: An installation method comprises a process (a) of drilling a hole in the ground by a casing pipe 1 up to a lower part of a predetermined depth range R of including a water filling position in a hard ground layer H, a process (b) of inserting an injection pipe 2 into the casing pipe 1, a process (c) of forming a columnar disturbed ground area A over the predetermined depth range R by simultaneously injecting high pressure water from an injection hole by pulling up while rotating the injection pipe 2 after pulling up the casing pipe 1 up to an upper part of the predetermined depth range R, a process (d) of drilling the hole again by the casing pipe 1 up to the water filling position of the disturbed ground area A after extracting the injection pipe 2, a process (e) of inserting a water filling pipe 4 into the casing pipe 1 and a process (f) of inputting a well constituting material such as a filter material between a hole drilling wall 5 and the water filling pipe 4 while extracting the casing pipe 1.SELECTED DRAWING: Figure 1

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Inventors:
KUWABARA KIYOSHI
HONDA SATOSHI
SAKAKIMA RYO
NAGAO TATSUJI
YANAGI HIROBUMI
KURISU MOTOAKI
NISHIMURA TOMOAKI
ITABASHI SATORU
KOIKE TOSHIO
Application Number:
JP2015025472A
Publication Date:
August 18, 2016
Filing Date:
February 12, 2015
Export Citation:
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Assignee:
HIGASHI NIPPON RYOKAKU TETSUDO
TEKKEN CONSTR CO
JTEC CORP
International Classes:
E02D19/10
Domestic Patent References:
JPH11269861A1999-10-05
JP2008208526A2008-09-11
JP2005330763A2005-12-02
JPS61282513A1986-12-12
JP2004025158A2004-01-29
JP2007038183A2007-02-15
JP2004257173A2004-09-16
Foreign References:
US20040031603A12004-02-19
Attorney, Agent or Firm:
Hirotaka Hatayama