Title:
復水工法及び復水井戸システム
Document Type and Number:
Japanese Patent JP7102872
Kind Code:
B2
Abstract:
To provide a recharge method and a recharge well system realizing cleaning effect to prevent decrease of water injection performance.SOLUTION: A recharge well system 20 is provided with a drainage pump 25 pumping water from a recharge well pipe 21 and an atmospheric air communication valve 31 arranged on an atmospheric air communication pipe 30 installed in a ceiling plate 22 to seal an upper surface of the recharge well pipe 21, controlling air communication with an inner space of an upper part of the recharge well pipe 21. A control section 50 of the recharge well system 20 supplies water through a water injection pipe 18 by closing the atmospheric air communication valve 31, increasing pressure to inject the water in the ground. The control section 50, further, closes the atmospheric air communication valve 31 to decrease pressure in the upper space of the recharge well pipe 21, and drives the drainage pump 25 to pump the water from the recharge well pipe 21 for cleaning.SELECTED DRAWING: Figure 1
Inventors:
Yuki Yamada
Takehiro Tomiyasu
Yoshihiko Morio
Kazuhiro Watanabe
Atsushi Hirano
Kazutetsu Yoshimoto
Masano Suzuki
Takehiro Tomiyasu
Yoshihiko Morio
Kazuhiro Watanabe
Atsushi Hirano
Kazutetsu Yoshimoto
Masano Suzuki
Application Number:
JP2018071374A
Publication Date:
July 20, 2022
Filing Date:
April 03, 2018
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E02D3/10; E02D19/10
Domestic Patent References:
| JP60105706A | ||||
| JP60105705A | ||||
| JP2000054779A | ||||
| JP6193041A | ||||
| JP2003268759A | ||||
| JP2007262766A | ||||
| JP2011256670A | ||||
| JP2001323447A | ||||
| JP6146257A | ||||
| JP2014047988A |
Foreign References:
| US4260334 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda