| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional embedded pipe placing method for reclaiming by inserting a new pipe into an existing pipe is provided basically for inserting a straight pipe thereinto, and therefore, it is adaptable only for inserting the new pipe into a bent portion of the existing pipe which is slightly bent approximately into a straight line in the horizontal direction, but it is not adaptable to a further bend one or a vertically bend. SOLUTION: The new pipe pulled into the existing pipe to pass therethrough is a flexible pipe which has a bellows pipe 11 formed by flexibly machining a stainless pipe, and an elongation preventing blade 12 and an anticorrosive film wound thereon. A head cover 3 to which a pull-in tensile wire 6 is connected is mounted on the flexible pipe in an axially turnable and rockable manner. COPYRIGHT: (C)2009,JPO&INPIT
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