| 摘要 |
PROBLEM TO BE SOLVED: To provide a new execution method in which a new long body is closely attached to or installed with the prescribed intervals on a preliminarily installed long body in a pipe. SOLUTION: When a long body 2 such as a power cable is already installed in a pipe 1, and other long body 3 such as a communication cable, an optical fiber cable and a heat pipe are continuously arranged in a closely attaching manner to the long body 2 in a gap between the pipe and the long body, the newly installed long body 3 and a flexible bag-shaped body 4 are pulled in and installed as a means for uniform close attachment over the whole length in the longitudinal direction. The fluid such as air and sand is fed into the bag-shaped body 4, and the newly installed long body is pressed against the existing long body in a closely attaching manner, and installed therealong. |
