Title:
JACKING PIPE
Document Type and Number:
Japanese Patent JP2002276286
Kind Code:
A
Abstract:
To provide a low-cost jacking pipe having great water cut-off ability suitable for a ultra-deep jacking method.
In a mounting groove 2 arranged on the outer circumferential face of an insert 3 of a jacking pipe body 1, a seal seat member 6 is installed. In seal grooves 7 and 8 arranged in the seal seat member 6, O-rings 9 and 10 are installed individually. A water pressure working from a clearance 12 in a coupling part is applied to the O-ring 10 in the rear position, and the O-ring 10 is pressed to the front wall of the seal groove 8 for sealing water.
Inventors:
MIYAHARA TSUYOSHI
NOBE OSAMU
NAKAJIMA TAKASHI
TOKURA KEIZABURO
NOBE OSAMU
NAKAJIMA TAKASHI
TOKURA KEIZABURO
Application Number:
JP2001074565A
Publication Date:
September 25, 2002
Filing Date:
March 15, 2001
Export Citation:
Assignee:
KURIMOTO CONCRETE IND LTD
NIPPON KOKAN KK
NIPPON KOKAN KK
International Classes:
E21D9/06; F16L1/024; F16L17/00; F16L21/02; (IPC1-7): E21D9/06; F16L17/00; F16L21/02
Attorney, Agent or Firm:
Bunji Kamata (2 outside)