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Title:
BACKFILLING DEVICE
Document Type and Number:
Japanese Patent JP2000192799
Kind Code:
A
Abstract:

To prevent transformation, etc. of ground during placement of a backfill material.

A bulkhead 11 having a supporting surface 11a is provided at the rear of an outer shell 3 in such a way as to be freely driven for axial movement, the bulkhead 11 being shaped so that it can form an injection space CK by permitting a chamber bulkhead 15 forming a portion of the supporting surface 1a to be freely driven for axial movement and driving the chamber bulkhead 15 for movement. The bulkhead 11 is provided with a placement pipe 17 in such a manner that a backfill material UM can be freely supplied into the injection space CK.


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Inventors:
USUI TATSUO
TAMURA NAOAKI
ISHIDA KIKUO
MURAI HIROAKI
Application Number:
JP36631698A
Publication Date:
July 11, 2000
Filing Date:
December 24, 1998
Export Citation:
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Assignee:
MITSUI CONSTR
International Classes:
E21D9/06; E21F15/00; (IPC1-7): E21F15/00; E21D9/06
Attorney, Agent or Firm:
Shinji Aida (1 outside)



 
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