| 摘要 |
<p>PROBLEM TO BE SOLVED: To bury cables such as power cabIes, communication cables, etc., in separate light-weight blocks, and make the depth of the excavation relatively shallow as a whole, and facilitate the burying work. SOLUTION: A block body 10 is made of plural block members 11 and 12. In each block member 11 and 12, plural lines of semicircular grooves 14 which form cable insertion holes in junction state are made in parallel at each other's junction faces. Wide parts 15 are made at both ends of the groove 14 of each block member 11 and 12. In each block member 11 and 12, a groove 17 which forms a graft groove material injection port 16 in junction state is made at the junction face. Each block member 11 in each top and bottom layer is in the same form, and each block part material 12 in the middle layer is in the same form. Couplings 19 for coupling the block members 11 and 12 are attached to both flanks of the block member 11 in the upper and lower layers, and adjacent several blocks 10 are coupled with each other by the coupling 19, using a bolt and a nut.</p> |
