Title:
COLLECTION METHOD OF GROUND WATER
Document Type and Number:
Japanese Patent JP2015197373
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To grasp concentration of harmful substances originally contained in ground water without newly installing an observation well for grand water collection.SOLUTION: In a collection method of ground water according to the present invention, first, a casing 1 is erected in a drilling hole, while forming a drilling hole 3 in a ground 2 (step 101). Next, a gravel 12 is filled into an inner space of the casing 1 in such a manner of being piled up on a drilling bottom 11 located in the lower end vicinity of the casing 1 (step 103). Next, with a filling height h of the gravel 12 as an upper limit, the casing 1 is pulled up (step 104). Next, the grand water which flows into the drilling hole 3 from a porous wall 13 and the drilling bottom 11 and further flows into the casing 1 by passing through a gap of the gravel 12 is collected (step 105). When the grand water is collected, the casing 1 is pulled up and removed (step 106).
Inventors:
SATO YUKO
SAWA KOICHIRO
MIURA TOSHIHIKO
SAWA KOICHIRO
MIURA TOSHIHIKO
Application Number:
JP2014075546A
Publication Date:
November 09, 2015
Filing Date:
April 01, 2014
Export Citation:
Assignee:
OHBAYASHI CORP
International Classes:
G01N1/10; E02D1/06
Domestic Patent References:
| JPH01182753A | 1989-07-20 | |||
| JP2009510409A | 2009-03-12 | |||
| JPH08158418A | 1996-06-18 | |||
| JP2005171487A | 2005-06-30 | |||
| JP2002054382A | 2002-02-20 | |||
| JP2003139665A | 2003-05-14 | |||
| JPS629676B2 | 1987-03-02 | |||
| JPH05506899A | 1993-10-07 | |||
| JPH1183844A | 1999-03-26 |
Foreign References:
| US20040000433A1 | 2004-01-01 | |||
| US20030121336A1 | 2003-07-03 |
Attorney, Agent or Firm:
Satoshi Kubo