Title:
IMMERSION OF DEPARTURE SHAFT USING EXCAVATOR PROVIDED JUXTAPOSEDLY WITH AGITATING BLADE, AND CONNECTING METHOD TO BURIED SEWER MAIN
Document Type and Number:
Japanese Patent JPH10317866
Kind Code:
A
Abstract:
To conduct excavation and immersion efficiently and safely by preventing the leakage of water from the outer pipe of a departure shaft and the settlement of a ground surface.
This simple excavation agitator is constituted so that the joint section 28 of a departure shaft is formed in a screwing type and the agitator has an excavation spiral blade and an agitating blade 17. Soil and sand are excavated and removed while confirming the obstruction of a bedrock 1 by a high-pressure water jet probing pipe by jointly using a suction hose 20 and an immersed vibrator 22 and the immersion is made.
Inventors:
MITSUI SHINICHI
Application Number:
JP16037397A
Publication Date:
December 02, 1998
Filing Date:
May 14, 1997
Export Citation:
Assignee:
MITSUI SHINICHI
International Classes:
E21B7/20; E03F3/06; E21D1/00; E21D5/10; E21D9/08; (IPC1-7): E21B7/20; E03F3/06; E21D1/00; E21D5/10; E21D9/08
Attorney, Agent or Firm:
Masataka Oka