| 摘要 |
<p>PURPOSE:To prevent subsoil water and rain water from mixing with soil water by a method wherein waterproofing agent is poured through a semirigid tube into a space, which is formed between the portion turned inside out of a soft tube and the outer surface of a lining material at a branch part, and, after that, the interior of the soft tube is pressurized and next the soft tube is reversely turned outside in order to be drawn out of a branch pipe and finally the lining material at the branch part is bored. CONSTITUTION:Under the state that the fluid pressure in a lining material 6 is kept on, waterproofing agent 16 is poured through a semirigid tube 12 into a space, which is formed between the portion turned inside out 15 of a soft tube 13 and the outer surface of a lining material 6 at a branch part. Under the state that the waterproofing agent 16 fills the space, fluid pressure is applied to the interior of the soft tube 13, which has been inserted in a mounting tube 2, so as to take the tube 13 out of the mounting tube 2 by turning the tube 13 outside in the reverse way of the former insertion of the tube 13. In addition, excess waterproofing agent 16 left at the branch part is removed by being sucked through the semirigid tube 12. Further, the terminal parts of the lining material 6 are cut off at the opening parts to manholes 4, each of which is provided at each terminal of a branch tube 3, so as to seal the terminals by proper means. After that, the lining material 6 at the branch part between the tube 3 and the mounting tube 2 is bored so as to communicate the mounting tube 2 with the branch tube 3.</p> |
