Title:
ダウンザホールハンマを有する高圧噴射撹拌装置及びこれを用いた高圧噴射撹拌工法
Document Type and Number:
Japanese Patent JP6887262
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To construct a modified body with larger diameter, for example, diameter φ 3-5 m than before.SOLUTION: A rod and a construction monitor are a completely independent triple tube structure consisting of an inner tube, a middle tube and an outer tube. The inner tube is a flow path for solidifying material slurry which communicates with a nozzle of the construction monitor. The middle tube is a down-the-hole hammer driving air flow path communicating with a drive section of a down-the-hole hammer. The outer tube is an air flow path communicating with the nozzle of the construction monitor, and functions as an air flow path for an improvement body formation, an air flow path for preventing clogging of an air nozzle for the improvement body formation, and an air flow path for preventing collapse of a boring wall. The middle tube and the outer tube are connected to a compressor via an air control flow path having switching means.SELECTED DRAWING: Figure 1
Inventors:
Keisuke Tsutsui
Nishio Kei
Nishio Kei
Application Number:
JP2017020175A
Publication Date:
June 16, 2021
Filing Date:
February 07, 2017
Export Citation:
Assignee:
Onoda Chemiko Co., Ltd.
International Classes:
E02D3/12
Domestic Patent References:
| JP2015140546A | ||||
| JP2005155207A | ||||
| JP2000045262A | ||||
| JP11172667A | ||||
| JP6264434A | ||||
| JP2015059377A | ||||
| JP2014111893A | ||||
| JP60138112A | ||||
| JP11036281A | ||||
| JP10306435A |
Foreign References:
| KR100806912B1 |
Attorney, Agent or Firm:
Saiun International Patent Service Corporation