GROUND SAMPLE SAMPLING METHOD, AND GROUND SAMPLE SAMPLING DEVICE

Title:

GROUND SAMPLE SAMPLING METHOD, AND GROUND SAMPLE SAMPLING DEVICE

Document Type and Number:

Japanese Patent JP2021085204

Kind Code:

A

Abstract:

To provide a ground sample sampling method and a ground sample sampling device capable of preventing flotation of a piston due to dynamic water pressure and capable of easily sampling a ground sample.SOLUTION: A ground sample sampling method comprises: a boring step of forming a borehole; a sampler lowering step of lowering a ground sample sampling device 5 into the borehole and making a piston 6 be in contact with the borehole bottom; a sampling tube penetration step of making a sampling tube 8 penetrate into the ground; and a ground sample sampling step of sampling the ground sample. In the sampler lowering step, the piston 6 and the sampling tube 8 are lowered substantially integrally by holding means 14. In the sampling tube penetration step, the piston 6 and the sampling tube 8 can respectively change their positions independently. In the ground sample sampling step, the piston 6 and the sampling tube 8 substantially integrally ascend by the holding means 14.SELECTED DRAWING: Figure 2

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Inventors:

SAKAI KAZUO
TACHIKAWA HIDEO
OKUZAWA TAIZO
YUGAWA HIRONORI

Application Number:

JP2019214224A

Publication Date:

June 03, 2021

Filing Date:

November 27, 2019

Export Citation:

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Assignee:

KISO JIBAN CONSULTANTS CO LTD

International Classes:

E02D1/04

Attorney, Agent or Firm:

Mitsuyasu Miura
Takayuki Kayahara

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