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Patent Searching and Data


Title:
EXCAVATING AND STIRRING APPARATUS
Document Type and Number:
Japanese Patent JP2002180454
Kind Code:
A
Abstract:

To evenly distribute a solidifying material from an outer circumferential position of an excavation rod to a hole wall vicinity and provide effective stirring and mixing of excavated soil and the solidifying material inside the hole wall in a method of stirring and mixing the excavated soil and the solidifying material discharged from a tip of the excavation rod while excavating the ground.

A plurality of discharge holes 5a-7a are formed in the tip of the excavation rod 2 and distances from a center on a cross section of the excavation rod 2 to a tip of each discharge hole 5a-7a are respectively differentiated. Or, a plurality of discharge holes 5a-7a are formed in the tip of the excavation rod 2, a supply pipe supplying the solidifying material to the discharge holes 5a-7a is separated into an inner pipe 8a and an outer pipe 8b of a double pipe structure, and cross-sectional areas of the inner and outer pipes 8a and 8b are mutually differentiated.


Inventors:
SANO KUNIHIRO
KOBAYASHI ATSUSHI
TANIGAWA MASAKAZU
OSAKI NORIYOSHI
Application Number:
JP2000000377151
Publication Date:
June 26, 2002
Filing Date:
December 12, 2000
Export Citation:
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Assignee:
DAISHO SHINKI KK
NITTOC CONSTRUCTION
International Classes:
E21B17/18; E02D3/12; (IPC1-7): E02D3/12; E21B17/18
Attorney, Agent or Firm:
久門 知 (外1名)