Title:
EXCAVATION AND AGITATION DEVICE AND EXCAVATION AND AGITATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/218677
Kind Code:
A1
Abstract:
The present invention is an excavation and agitation device that discharges, to the ground, a cement slurry to which a water-soluble fluorescent dye of a prescribed concentration has been added, the device comprising: a rotating shaft 3 that rotates in the ground about a vertical axis; an excavation blade 5 that is axially attached to the rotating shaft 3 and excavates soil; a light source 6 that radiates black light onto a soil improvement body in the ground; and a measuring apparatus 7 that measures the soil improvement body irradiated with the black light from the light source 6, wherein the light source 6 and the measuring apparatus 7 are raised and lowered integrally with the excavation blade 5. The present invention is provided with a control unit 20 that derives a luminance rate on the basis of the output of the measuring apparatus 7, compares the derived luminance rate and a predetermined threshold, assesses whether a mixed state of the cement slurry is permissible or not, and when the mixed state is permissible, allows the excavation blade 5 to proceed.
Inventors:
USUI HIROFUMI
Application Number:
PCT/JP2022/037403
Publication Date:
November 16, 2023
Filing Date:
October 06, 2022
Export Citation:
Assignee:
TENOX KYUSYU CORP (JP)
International Classes:
E02D3/12
Foreign References:
| JP2022001727A | 2022-01-06 | |||
| JP2005337747A | 2005-12-08 | |||
| JPH09318543A | 1997-12-12 | |||
| JP2010018989A | 2010-01-28 | |||
| JP2001090058A | 2001-04-03 | |||
| JPH0995936A | 1997-04-08 |
Attorney, Agent or Firm:
HIRANO, Kazuyuki (JP)
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