Title:
ACCOMPANYING RISER MONITOR OF SAND PILE
Document Type and Number:
Japanese Patent JP2738921
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To sense beforehand an accompanied rising phenomenon, adjust the pressure of air, the number of vibrations which act on a casing and a casing pull-out speed and prevent a sand pile from rising together by monitoring the vertical movement of a packed sand drain head when the casing is being pulled in a packed sand drain method.
SOLUTION: In a construction method which places a packed drain material in the ground by using an air pressure, a through hole 6 is provided on the top of a casing 1 while the top of a drain material 15 and a range finder 11 provided with the exterior of the casing 1 are connected with wires 8 and 10 while a hook 9 is mounted on the tip of the wire 8. The wires 8 and 10 are interlocked with the packed drain material 15 by hanging the hook 9 on the head of the packed drain material 15.
Inventors:
ARAI KUNIHIKO
MINAMI NOBUYOSHI
UMEBAYASHI SUMIO
AOKI JUJI
MINAMI NOBUYOSHI
UMEBAYASHI SUMIO
AOKI JUJI
Application Number:
JP29964895A
Publication Date:
April 08, 1998
Filing Date:
November 17, 1995
Export Citation:
Assignee:
CHODA KAKO KENSETSU KK
International Classes:
E02D3/10; (IPC1-7): E02D3/10
Domestic Patent References:
| JP190834U | ||||
| JP50115710U |
Attorney, Agent or Firm:
Ippei Watanabe
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