Title:
自削孔型モニター装置を備えた地盤改良装置及び地盤改良方法
Document Type and Number:
Japanese Patent JP7402739
Kind Code:
B2
Abstract:
To provide a ground improvement device having a self-drilling type monitor device and a ground improvement method which can block a drilling water discharge port with a simple configuration.SOLUTION: A flow channel of drilling water is connected from a first flow channel 11 that is a common flow channel of drilling water and compressed air through a third flow channel 13 to a drilling water discharge port 32, and the flow channel of the compressed air is connected from the first flow channel 11 through a fourth flow channel 14 to a compressed air injection nozzle 34. The drilling water discharge port 32 is composed of a porous surface in which a plurality of holes 32a is opened, and each of the holes 32a can be blocked by charging at least the same number of steel balls 4 as the number of the holes 32a from the upper part of a rod 1 into the first flow channel 11. On the other hand, a wire 5 is welded to an inlet 14a of the fourth flow channel 14 so as to block a part of the opening, which permits passage of the compressed air but regulates intrusion of the steel balls 4 into the fourth flow channel 14.SELECTED DRAWING: Figure 2
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Inventors:
Yuji Kaneko
Application Number:
JP2020074945A
Publication Date:
December 21, 2023
Filing Date:
April 20, 2020
Export Citation:
Assignee:
STEC Co., Ltd.
International Classes:
E02D3/12
Domestic Patent References:
| JP2008095442A | ||||
| JP2019124067A | ||||
| JP2015634U | ||||
| JP2013133638A | ||||
| JP2005248660A | ||||
| JP2010275797A | ||||
| JP10152834A |
Attorney, Agent or Firm:
Shoji Suzue
Toshiyuki Kimura
Toshiyuki Kimura