| 摘要 |
<p>PROBLEM TO BE SOLVED: To fit a cable afterward without degrading physical property after burying a synthetic resin pipe main body by projectingly providing projecting lines along the pipe axis direction on the inner face on the upper side of a synthetic resin pipe main body, and supporting a fitting plate capable of fixing a cable supporting tool with the projecting lines. SOLUTION: On the inner face of a synthetic resin pipe main body 1 extrusion molded out of hard polyvinyl chloride, projecting lines 11 opposite to each other along the pipe axis direction are horizontally projectingly provided, a fitting plate 2 of nearly flat semicylindrical section extrusion molded out of hard polyvinyl chloride is inserted on the upper side of the projecting lines 11, and both end edges 21 of it are supported with the projecting lines 11. For fitting a cable supporting tool 3 to the fitting plate 2 so as to lay a cable after burying the synthetic resin pipe main body 1, the thick wall part of the fitting plate 2 is drilled from the bottom face at fixed interval with a diamond drill by the use of remote operating optical fiber cable laying robot, and an anchor bolt with a J-shaped hook as a cable supporting tool 3 is inserted to the drilled part, and fixed with a plunger pin.</p> |
