| 摘要 |
<p>PURPOSE:To hold a surface state of an inner periphery of a branch tube after lining in good condition. CONSTITUTION:The method for lining a branch tube comprises the steps of impregnating a branch tube lining material 4 having a collar 4a at one end with a curable resin, folding a collar 4a of the material, setting it to a fluid pressure sealing nozzle 7, inverting and inserting the material 4 from a main tube 1 side toward a ground in a branch tube 2, then lifting its upper end on the ground, and separating the nozzle 7 from the material 4 while fixing the collar 4a at an inner wall of the tube 1. The method further comprises the steps of expanding a pressure bag 16 for sealing to be introduced into the tube 1 to seal a lower end opening of the material 4 with the bag 16, then sealing an upper end of the material 4 to press an inner wall of the tube 2 by hydraulic pressure, and curing the resin impregnated to the material 4 while holding this state.</p> |
