| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a regenerating method for a fitting pipe junction of a deteriorated sewer pipe minimizing the reduction of the inner diameter of the deteriorated sewer pipe and completely preventing the infiltrating water from the junction of the deteriorated sewer main pipe and the fitting pipe by using a flexible synthetic resin tubular body. SOLUTION: The flexible synthetic resin tubular body bent and shrunk in diameter is inserted from the outside into the fitting pipe of the sewer main pipe opened at a fitting pipe port and regenerated on the inner face so that an insertion side end section is protruded into the sewer main pipe from the fitting pipe port. The synthetic resin tubular body is heated, recovered, expanded in diameter, and closely stuck to the inner face of the fitting pipe, with an elastic body pinched between it and the fitting pipe port. The protruded section of the synthetic resin tubular body into the sewer main pipe is folded and deformed toward the inner face of the sewer main pipe, and the folded and deformed protruded section is watertightly connected to the inner face of the regenerated sewer main pipe by this regenerating method for the fitting pipe junction of the sewer pipe.</p> |
