| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a regeneration method of a drainage pipe requiring generation of air flow inside the pipe, which allows the construction object to obtain sufficient wind speed for the construction quality and allows quick and inexpensive construction. <P>SOLUTION: The construction object is the drainage pipe equipped with a vertical main pipe P1 vertically penetrating floors and lateral branch pipes P11 provided for respective floors and connected to the vertical main pipe P1 at the lower ends. The lateral branch pipes P11 provided for the respective floors are communicated with a ventilation pipe provided along the vertical main pipe P1. A lining tube 12 is inserted into the ventilation pipe, and a diameter of the lining tube 12 is extended to make the tube 12 stick to an inner surface of the ventilation pipe, which blocks the communication between the ventilation pipe and the lateral branch pipes 11. <P>COPYRIGHT: (C)2010,JPO&INPIT |
