Title:
地下水観測装置および地下水観測方法
Document Type and Number:
Japanese Patent JP7390974
Kind Code:
B2
Abstract:
To provide an underground water observation device and an underground water observation method capable of simultaneously performing pressure observation and underground water sampling in one borehole.SOLUTION: An underground water observation device comprises: a casing pipe 12 which is inserted into and arranged in a borehole 10; a plurality of water-blocking packers 14 which are arranged around the casing pipe 12 vertically at an interval; a pressure gauge 18 which is provided outside the casing pipe 12 in order to measure water pressure of underground water in the section defined with the packers 14; and an optical fiber cable 16 which is arranged along between a borehole wall 10A and the casing pipe 12 in order to transmit light for pressure detection of the pressure gauge 18.SELECTED DRAWING: Figure 1
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Inventors:
Hokari Toshiyuki
Mitsunobu Okihara
Hitoshi Nakajima
Mitsunobu Okihara
Hitoshi Nakajima
Application Number:
JP2020088391A
Publication Date:
December 04, 2023
Filing Date:
May 20, 2020
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
G01V9/02; E02D1/02; E02D1/06; G01L1/24
Domestic Patent References:
| JP2008267089A | ||||
| JP2009002951A | ||||
| JP201517905A | ||||
| JP2018179668A | ||||
| JP2007016587A | ||||
| JP9025783A | ||||
| JP2019011622A |
Attorney, Agent or Firm:
Sakai International Patent Office
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