| 摘要 |
<p>PURPOSE:To enable regeneration of a pipeline with a diameter larger than that of an existing embedded pipe without shutting off the flow passage of the pipe. CONSTITUTION:With a fluid flowing through an existing embedded pipe 2, an enlarged diameter pipe 4 with a diameter larger than that of the pipe is embedded with eccentricity by an eccetric enlargement shield in the periphery of the existing embedded pipe 2. After the enlarged diameter pipe 4 is embedded, a filled fixing material 7 is placed between the substantially lower half part of the existing embedded pipe 2 and the enlarged diameter pipe 4 to fix the existing embedded pipe 2, and then the substantially upper half part of the existing embedded pipe 2 is removed to form a new flow passage 8 in the enlarge diameter pipe 4. Thus, a pipe with a diameter larger than that of the existing embedded pipe can be replaced without shutting off the flow passage of the pipe 2.</p> |
