| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to efficiently execute installation work at the site without need for curing time. SOLUTION: The structure involves a manhole 1 having an opening 11 in its circumferential side wall, a collar member 3 which is integrally buried in the opening 11 in advance, a protective pipe joint member 4 connected to the collar member 3, and a fixing plate 5 having a plurality of pipe joint holes 51. The fixing plate 5 is structurally connected from inside the manhole 1 in such a manner that the opening 11 is blocked. A pipe 2 is connected to the pipe joint hole 51 in the fixing plate 5, and further the protective pipe joint member 4 is structurally connected from outside the manhole 1 to the collar member 3 in the opening 11. A protective pipe 7 is connected to the protective pipe joint member 4 so as to protect the circumference of the pipe 2.</p> |
