| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily repair a lateral sewer fitted to a buried main pipe, to eliminate an odor such as a styrene odor or an amine odor in repairing the lateral, and to regenerate the lateral sewer with a lateral sewer having a good water supply property. SOLUTION: After the buried main pipe 1 is generated with a polyethylene regenerated main pipe 4, a repairing polyethylene lateral 5 having the diameter smaller than that of the lateral 2 is inserted into the lateral 2 through the polyethylene regenerated main pipe 4. A polyethylene flange 5a provided at the end section of the repairing polyethylene lateral 5 is heat bonded to the polyethylene regenerated main pipe 4, them mortar 9 is filled in the gap between the lateral sewer 2 and the repairing polyethylene lateral sewer 5.</p> |
