Partial repairing method for inner pipe using by repairing apparatus being adaptable to pipes of various inner diameter and length

摘要

The present invention relates to a method for partially repairing an inner surface of a pipe using a repairing device capable of repairing pipes with various diameters and lengths capable of partially repairing the pipe by being applied to the pipes with the various diameters with the single repairing device. The present invention provides the method for partially repairing the inner surface of the pipe using the repairing device capable of repairing the pipes with the various diameters and lengths capable of: being applied to the pipes with the various diameters using the single repairing device by arranging the repairing device having a foldable unit formed into a corrugated shape to enlarge and reduce the diameter in a vertical direction and to clean an internal space of the pipe after inspecting the internal space of the pipe, adhering a repairing material to a damaged portion of the pipe with the single repairing device, and then hardening the repairing material; being inserted without the repairing device even though the diameter of the pipe is larger than that of a manhole; improving attachment performance of the repairing material and reducing a size of the repairing device by an air tube expanded to be at a diameter identical to that of the pipe; and facilitating maintenance by easily attaching and detaching the air tube.