LAYING METHOD LAYING STRUCTURE AND STRUCTURAL MEMBERS USED FOR LAYING COMMUNICATION CABLES IN UNDERGROUND PIPELINE

摘要

The present invention is applicable to a main pipe in which a plurality of optical fiber cables (20) are laid without attaching tension to the optical fiber cable (20) in an underground channel such as a sewage pipe or the like and without being loosened, It is possible to lay an optical fiber cable 20 on the side of the cable 16 and provide a method of laying the communication cable 16 that does not require a costly robot. As a result, the method of laying the communication cable 16 according to the present invention includes sliding the tensile members 25, 26, 27 of high-strength low-elongation lengthwise along the optical fiber cables 20, the tension members 25, 26 and 27 are pulled into the underground conduit 1 and tension is applied to the trunk tension members 25 between the manholes 2 and 3 so that the trunk tension The optical fiber cables 20, 21 and 22 are laid on the upper side of the underground conduit 1 by extending the member 25 almost linearly in the underground conduit 1. Tension is applied to the branching tensile members 26 and 27 in the branch pipes 4 and 5 so that the branching optical fiber cables 21 and 22 are laid without slack in the branch pipe.