| 摘要 |
An electric supply cable protection structure is provided to protect the cable through the visual discrimination by notifying a position of burying the electric supply cable underground. In an electric supply cable protection structure, U-shaped channels(32,34) to fill gravel(22) are continuously formed from right and left edges of a protection steel plate(30). An elastic thin plate(40) having a rear side in the form of a reflective surface is adhered to the upper side of the protection steel plate(30) in a point contact fashion. A plurality of vortex type spiral cutting parts(42) is formed in the elastic thin plate(40) and the spiral cutting parts(42) are disposed in the lattice form. Bosses(44) are protruded from respective central areas of the spiral cutting parts(42). Permanent magnets(50) sucked to buckets of a backhoe to excavate a reclaimed land for an underground conduit(20) are adhered to the bosses(44). |
