| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manhole joint for joining a manhole to a pipe buried underground, which is capable of dynamically holding the pipe line with a sufficient stability without being affected by the dynamic supported state of the underground-buried pipe even upon a relative subsidence of the manhole and the pipe line to each other. SOLUTION: A joint comprises a collar 21 buried in the pipe line opening of a manhole wall, a collar 22 connected to a pipe buried underground, and a short pipe 1 between the collars 21 and 22. The collars 21 and 22 are flexibly joined to the short pipe 1 with rubber rings 211 and 222 respectively.</p> |
