Title:
薬液注入工法及び装置
Document Type and Number:
Japanese Patent JP6804901
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a chemical injection device having a valve mechanism which can exhibit a function serving as a chemical injection valve over a long period without interfering with an inner wall surface of a borehole, and a chemical injection construction method using the chemical injection device.SOLUTION: Regarding the present invention, a borehole H is drilled and a chemical injection device (10) is disposed (inserted) in the borehole H, the chemical injection device having a groove (1A) formed extending in a circumferential direction on an outer peripheral surface (1D) of an outer pipe (1), the groove (1A) having an injection port (1B) formed thereon at an equal interval in the circumferential direction, the groove (1A) also having two annular elastic members (1C: an O-ring for example) fitted therein. When injecting a chemical, the chemical injection step involves deformation of the annular elastic member (1C) and formation of a flow channel (S) for discharging the chemical outward in a radial direction (injecting into a ground), when the chemical is discharged (injected) from the injection port (1B) of the chemical injection device (10).SELECTED DRAWING: Figure 5
Inventors:
Naoto Tomoe
Uesugi Yoshitaka
Uesugi Yoshitaka
Application Number:
JP2016171665A
Publication Date:
December 23, 2020
Filing Date:
September 02, 2016
Export Citation:
Assignee:
Nittoku Construction Co., Ltd.
International Classes:
E02D3/12
Domestic Patent References:
| JP50106209U | ||||
| JP59140333U | ||||
| JP58178721A | ||||
| JP11190018A |
Foreign References:
| WO2009091041A1 | ||||
| KR1020100100298A |
Attorney, Agent or Firm:
Takahashi Patent Office