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Title:
PENETRATING METHOD OF HOLLOW PIPE FOR SANDPILE DEVELOPMENT INTO HARD GROUND AND HOLLOW PIPE FOR SAND PIPE DEVELOPMENT THEREOF
Document Type and Number:
Japanese Patent JP2000120364
Kind Code:
A
Abstract:

To easily penetrate a hollow pipe into a hard ground without using special excavator such as an earth auger by adding a simple improvement to a tip of a usually hollow pipe for sand pile development.

A plurality of excavating bits 2 are attached on an inner periphery or an outer periphery of a lower end of a hollow pipe 1 for sand pile development so as to protrude downward. A plurality of nozzles 4 for ejecting high pressure jet water toward a lower direction are arranged on the outer periphery of a lower end of the hollow pipe 1. Accordingly, a hard ground is crushed by bits 2 utilizing vibration of a vibration hammer arranged on a head of the hollow pipe 1, and the hard ground is destroyed and loosened by the high pressure jet water from the nozzles 4 to easily penetrate the hollow pipe 1 into the hard ground.


Inventors:
WATANABE KANAME
UEHARA KOJI
Application Number:
JP1998000324334
Publication Date:
April 25, 2000
Filing Date:
October 09, 1998
Export Citation:
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Assignee:
KOKUDO SOGO KENSETSU KK
International Classes:
E21B7/20; E02D3/10; (IPC1-7): E21B7/20; E02D3/10
Attorney, Agent or Firm:
浅賀 一樹



 
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