Title:
BACKFILLING CONSTRUCTION METHOD OF UNDERGROUND PIPELINE
Document Type and Number:
Japanese Patent JP2019105062
Kind Code:
A
Abstract:
To provide a technique capable of backfilling relatively long underground pipeline while minimizing the number of vertical boreholes, and also capable of maintaining high drainage even after construction.SOLUTION: A backfilling construction method of an underground pipeline consists of a first step of forming the injecting borehole 14 and the pumping borehole 16 from the ground surface 12 to the underground pipeline 10, a second step of closing both ends of the underground pipeline 10 with partitions 24a and 24b, and a third step of: injecting a filler provided with self-leveling ability and non-separability in water by kneading non-separable materials, etc. and fine air bubbles into coarse-grained materials from the injecting borehole 14; and spreading the filler to the pumping borehole 16 side; wherein this third step is repeated as many times as necessary.SELECTED DRAWING: Figure 4
Inventors:
TSUCHIYA TSUTOMU
YAMAGUCHI KENJI
YAMANOBE JUNICHI
YOKOHARI HIKARI
OKADA YASUHIRO
KAWASHIMA MASUMI
HASEGAWA HIROAKI
YAMAGUCHI KENJI
YAMANOBE JUNICHI
YOKOHARI HIKARI
OKADA YASUHIRO
KAWASHIMA MASUMI
HASEGAWA HIROAKI
Application Number:
JP2017237318A
Publication Date:
June 27, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
CHEMICAL GROUT CO
SUMITOMO MITSUI CONSTRUCTION CO LTD
SUMITOMO MITSUI CONSTRUCTION CO LTD
International Classes:
E21F15/00
Domestic Patent References:
| JP2008013910A | 2008-01-24 | |||
| JPH01142127A | 1989-06-05 | |||
| JP2002348898A | 2002-12-04 | |||
| JP2000128661A | 2000-05-09 | |||
| JP2004091535A | 2004-03-25 | |||
| JP2000265800A | 2000-09-26 |
Foreign References:
| US20120207552A1 | 2012-08-16 |
Attorney, Agent or Firm:
Hiroyuki Okuda
Noriyuki Okuda
Noriyuki Okuda