METHOD FOR LINING TUBE

摘要

PROBLEM TO BE SOLVED: To stably effectively line a pipeline by bypassing a part to be lined without pumping service water onto the ground, and supplying it to its downstream. SOLUTION: The method for lining a tube comprises the steps of installing an air plug (damming-up member) 3 and a pump 1 upstream of a part 1A to be lined of a pipeline 1, respectively providing switching valves 11, 12 at branches 10a, 10b of a main bypass hose 10 leading out from the pump 1, connecting a first bypass hose 13 to the branch 10a, driving the pump 7, inserting a tube lining material 15 into the part 1A of the pipeline 1 while feeding service water damped up by the plug 3 downstream of the part 1A of the pipeline 1 through the hose 13, then connecting one end of a second bypass hose 18 passed through the material 15 to the other branch 10b of the hose 10 and feeding the water dammed up by the plug 3 downstream of the part 1A of the pipeline 1 through the hose 18.