Title:
CAST-IN-PLACE PILE METHOD AND EXCAVATING DEVICE
Document Type and Number:
Japanese Patent JP2548870
Kind Code:
B2
Abstract:
PURPOSE: To promote execution efficiency by injecting abrasive jet from around the edge of a blade of a casing tube to make excavation.
CONSTITUTION: A casing tube 1 is vibrated and penetrated into the foundation A, for example, when it is changed to the high strength soil such as boulder or concrete, etc., high pressure water from a high pressure pump 2 and abrasives from an abrasive supply device 3 are sent to a high pressure water pipe 12 and an abrasive pipe 13 from a high pressure water pipe 9 and an abrasive pipe 10 through a swivel joint 11, and are supplied to a high pressure water 7 of the tube 1 and an abrasive pipe 8. After that, high pressure water is mixed with abrasives in a mixing room 21 provided around a nozzle 19 to form abrasive jet, and it is injected from a nozzle 23. Then, small blocks of excavated earth are made by penetrating excavation of the tube 1 and injection from nozzle 22, and earth is removed by a hammer glove 4, etc. According to the constitution, execution efficiency to the high strength foundation can be promoted by means of abrasive jet.
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Inventors:
KIKUCHI TETSUKI
YOKOTA YORIHAYA
SHIMAI MORYUKI
KAWADA MASATOSHI
YOKOTA YORIHAYA
SHIMAI MORYUKI
KAWADA MASATOSHI
Application Number:
JP24648592A
Publication Date:
October 30, 1996
Filing Date:
September 16, 1992
Export Citation:
Assignee:
KAJIMA CONSTRUCTION CORP
International Classes:
E02D5/38; E02D5/72; E21B7/18; E21B7/20; (IPC1-7): E02D5/38; E02D5/72; E21B7/18; E21B7/20
Domestic Patent References:
| JP5325005A | ||||
| JP60164510A | ||||
| JP63219794A | ||||
| JP1121498A |
Attorney, Agent or Firm:
Toshitada Takahashi (1 outside)