Title:
BORING METHOD
Document Type and Number:
Japanese Patent JPH01151690
Kind Code:
A
Abstract:
PURPOSE: To facilitate the boring by supplying the liquid for watering the bored sediment down to the slurry from a water pipe, and while supplying air to a lower part of a shaft, and discharging the bored sediment through inside of the shaft with the lifting effect of the air. CONSTITUTION: An auger unit 4 provided with a boring agitating blade 40 at a tip of a shaft 3 is fitted to an auger driving unit 1 through swivel devices 2, 2, and an air pipe 5 and a water pipe 8 are fitted in parallel with the shaft 3, and a lower end of the air pipe 5 is opened near a head 4. The shaft 3 and the head 4 are driven for rotation by the unit 1, and wafer is supplied from the water pipe 8 so as to water the bored sediment down to the slurry. After boring several meters, air is supplied form the air pipe 5, and the slurry is discharged to a tank 63 through a water guide pipe 61 by the lifting effect that the slurry is caught and raised through the shaft 3. Consequently, boring is facilitated.
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Inventors:
YOSHIZUKA HIROSHI
ASAYAMA KINGO
ENDO TAKASHI
SUMI KOJI
YOSHIMI MASAO
ASAYAMA KINGO
ENDO TAKASHI
SUMI KOJI
YOSHIMI MASAO
Application Number:
JP31027587A
Publication Date:
June 14, 1989
Filing Date:
December 08, 1987
Export Citation:
Assignee:
TAKECHI KOMUSHO KK
International Classes:
E21B21/00; E21B3/02; E21B7/20; (IPC1-7): E21B21/00
Domestic Patent References:
| JPS57169191A | 1982-10-18 | |||
| JPS50133101A | 1975-10-22 | |||
| JPS62172794A | 1987-07-29 | |||
| JPS6023731A | 1985-02-06 |
Attorney, Agent or Firm:
Ishida Choshichi