UNDERGROUND PIPELINE PARTIAL REPAIRING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an underground pipeline partial repairing method that can stop leaking underground water to line a damaged part at the time of repairing the damaged part of the internal wall of a pipeline in the case of underground water or the like leaking out. SOLUTION: A fiber sheet 11 impregnated with an unhardened synthetic resin is wound around a packer 2 in such a way that the end parts are directly overlapped with each other. This packer 2 is expanded at a required part of damage 1a in a distributing water pipe 1, and the face impregnated with the unhardened synthetic resin is directly pressed to the internal wall of the distributing water pipe 1 while opening the fiber sheet 1 against mutual frictional force of the overlapped end parts. The impregnated synthetic resin is thereby pushed out to the internal wall side of the distributing water pipe 1 and filled in the damage 1a formed at the internal wall of the distributing water pipe 1, and this synthetic resin is hardened as it is along with the synthetic resin impregnated in the fiber sheet 1 so as to repair the part of the damage 1a.