Title:
METHOD AND DEVICE FOR RETURNING UNDERGROUND WATER AGAIN UNDERGROUND BY PUMPING UP UNDERGROUND WATER
Document Type and Number:
Japanese Patent JP3445786
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To smoothly and efficiently return water in the ground without clogging the ground by an oxide granular material of dissolved iron in returning the pumped-up water.
SOLUTION: This method pumps up underground water flowing inside a pumping casing pipe 2 buried in the ground 1, and returns the pumped-up underground water again underground via a return casing pipe 3 buried in the ground 1. A series of pumping water return passage 4 is formed for returning the water in the ground 1 by pressurization via the return casing pipe 3 by pumping-up the underground water flowing inside the pumping casing pipe 2. This series of pumping water return passage 4 is formed as a sealed passage cut off from the atmosphere to prevent the water from touching the atmosphere before returning in the ground 1 via the return casing pipe 3 by pumping up the underground water from the pumping casing pipe 2.
Inventors:
Mokichi Takahashi
Shuichi Matsumura
Shuichi Matsumura
Application Number:
JP2001054988A
Publication Date:
September 08, 2003
Filing Date:
February 28, 2001
Export Citation:
Assignee:
Naruyuki Industry Co., Ltd.
Limited company Asahi Techno
Nishimatsu Construction Co., Ltd.
Nippon Construction Machinery Trading Co., Ltd.
Limited company Asahi Techno
Nishimatsu Construction Co., Ltd.
Nippon Construction Machinery Trading Co., Ltd.
International Classes:
E02D19/10; E02D3/10; (IPC1-7): E02D3/10; E02D19/10
Domestic Patent References:
| JP61204413A | ||||
| JP200027170A | ||||
| JP313369B2 |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)