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Title:
PROPULSION PIPE FOR BACKING PREVENTION
Document Type and Number:
Japanese Patent JP2013147812
Kind Code:
A
Abstract:

To provide a propulsion pipe for preventing strong backing force of pushing back a propulsion pipe column to a start shaft side when connecting the propulsion pipe during propulsion construction.

The propulsion pipe for backing prevention is a propulsion pipe 1 used for preventing backing that the propulsion pipe column is pushed back to the start shaft side by a water pressure or a soil pressure acting on a boring machine face plate at a distal end when connecting the propulsion pipe made of reinforced concrete during propulsion, and is configured by fixing an annular reinforcing plate 4 having a prescribed length in a propulsion direction to a concrete outer peripheral surface at the back of the propulsion pipe 1 so as to have the almost same diameter as an outer diameter of the propulsion pipe 1.


Inventors:
YOSHIOKA SATORU
WADA KOJI
Application Number:
JP2012007636A
Publication Date:
August 01, 2013
Filing Date:
January 18, 2012
Export Citation:
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Assignee:
KIDOH CONSTRUCTION CO LTD
International Classes:
E21D9/06; F16L1/024
Domestic Patent References:
JP2002327591A2002-11-15
JPH1018767A1998-01-20
JP2008082068A2008-04-10
JP2001153263A2001-06-08