Title:
GROUND SPECIMEN SAMPLING METHOD AND SAMPLING DEVICE
Document Type and Number:
Japanese Patent JP2021075887
Kind Code:
A
Abstract:
To provide a ground specimen sampling method and a sampling device which can prevent collected ground specimens from being disturbed even if the sampler head moves upward due to reaction force.SOLUTION: It is characterized by being composed of a piston contact process in which the bottom surface of the piston provided near the lower end of the piston rod is approximately brought into contact with the upper surface of the ground sample, a sampling tube insertion process in which the pressure piston is lowered by water pressure and a sampling tube fixed to the pressure piston is inserted into the soil for collecting the ground sample after the piston contact step, while the holding means keeps the piston and the ground sample in an approximately contacted state, and a ground sampling process for collecting the ground sample after inserting the sampling tube to a predetermined position in the sampling tube insertion process.SELECTED DRAWING: Figure 1
Inventors:
SAKAI KAZUO
YUGAWA HIRONORI
OKUZAWA TAIZO
YUGAWA HIRONORI
OKUZAWA TAIZO
Application Number:
JP2019202548A
Publication Date:
May 20, 2021
Filing Date:
November 07, 2019
Export Citation:
Assignee:
KISO JIBAN CONSULTANTS CO LTD
International Classes:
E02D1/04
Attorney, Agent or Firm:
Mitsuyasu Miura
Takayuki Kayahara
Takayuki Kayahara