| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for regenerating not only an existing pipe having small diameter but also an existing pipe having large diameter economically. SOLUTION: A temporary water drain pipe having smaller outside diameter than inside diameter of an existing pipeline is installed in the existing pipeline. A cylindrical pipe to be regenerated having smaller outside diameter than inside diameter of the existing pipeline and larger inside diameter than outside diameter of the temporary water drain pipe is installed at the outer periphery of the temporary water drain pipe as a single unit. The pipe to be regenerated as the single unit is pressurized and moved in the direction of the pipeline inside the existing pipeline to pressurize the single units sequentially and form a continuous body of pipes to be regenerated. A grout material is poured between the outer periphery of the continuous body and the inner periphery of the existing pipe and is hardened. COPYRIGHT: (C)2008,JPO&INPIT
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