| 摘要 |
<p>PURPOSE:To accurately and efficiently repair a drilling position by bonding FRP to the connection part of a sewer and a branch pipe from the inside of the sewer inclusive of the opening end part of the branch part to cover the connection part and inserting a flexible shaft having a drilling blade provided to the leading end thereof in the branch pipe from the surface of the ground to rotate the same to drill the sewer from the inside of the branch pipe. CONSTITUTION:FRP is boded to the connection part of a sewer 1 and branch pipe 2 from the inside of the sewer inclusive of the opening end part of the branch pipe 2 to cover the connection part. The upper end of the branch pipe 2 is connected to the drain measure 7 to which a drain pipe 8 allowing the water discharged from a home to flow is connected. After the FRP coating 5 is cured, a flexible shaft 3 having a drilling blade 4 provided to the leading end thereof is inserted in the branch pipe 2 from the surface of the ground through the drain measure 7 and the rotation of the other end of the flexible shaft 3 due to an electromotor 6 is transmitted to the drilling blade 4 through the flexible shaft 3. The drilling blade 4 comes into contact with the FRP coating 5 to rotate to drill the FRP coating 5 bonded to the sewer 1 from the inside thereof.</p> |
