Title:
GROUND SAMPLING DEVICE AND GROUND SAMPLING METHOD
Document Type and Number:
Japanese Patent JP2016094767
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a ground sampling device and a ground sampling method capable of sampling three phases of solid, liquid and gas phases from underground in almost natural state mainly at a ground examined for liquefaction.SOLUTION: A ground sampling device collects a ground sample into a sample storage pipe by lowering the sample storage pipe in the axial direction to a bottom of a borehole drilled in a ground. the ground sampling device comprises: a sampler head installed on a tip of a rod; a square penetration pipe with an upper end that is fixed or slidably fixed to the sampler head; a shoe with an external taper fixed to a lower end of the penetration pipe; the sample storage pipe, which has a lower end fixed to the shoe and is disposed with a clearance between the sample storage pipe and an inner wall face of the penetration pipe; thin plate shutters, which are disposed at a clearance between the inner wall face of the penetration pipe and the sample storage pipe, and can seal a ground sample inserted in the sample storage pipe by unevenly protruding from the shoe inner wall face during actuation; and liquid discharge means, which can discharge a liquid in the sample storage pipe.SELECTED DRAWING: Figure 1
Inventors:
SAKAI KAZUO
TACHIKAWA HIDEO
YUKAWA YOSHINORI
OKUZAWA TAIZO
TACHIKAWA HIDEO
YUKAWA YOSHINORI
OKUZAWA TAIZO
Application Number:
JP2014231811A
Publication Date:
May 26, 2016
Filing Date:
November 14, 2014
Export Citation:
Assignee:
KISO JIBAN CONSULTANTS CO LTD
International Classes:
E02D1/04; E21B25/00; G01N1/08
Domestic Patent References:
| JP2013014960A | 2013-01-24 | |||
| JP2004045081A | 2004-02-12 | |||
| JPH1171744A | 1999-03-16 | |||
| JP2013014960A | 2013-01-24 | |||
| JP2004045081A | 2004-02-12 | |||
| JPH1171744A | 1999-03-16 |
Attorney, Agent or Firm:
Mitsuyasu Miura
Takayuki Kayahara
Takayuki Kayahara