OPTICAL FIBER CABLE FOR DISTORTION SENSOR AND LAYING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a laying method of optical fiber cable for distortion sensor that obtains an optical fiber cable for distortion sensor with high sensitivity and has a high specified accuracy at the generation point of a distortion. SOLUTION: In the optical fiber cable 20 for distortion sensor, an optical fiber 21 and a tension member 22 are sheathed independently, to be connected to a concatenating part 26. A tensile load by moving a dead weight 32 is concentrated to a tension member part 28 in continuously remained, since the tension member 22 is cut off and a weight 3 is attached to the remained tension member part 28 to be in continuous in the length direction. As a result, the optical fiber cable for the distortion sensor with high sensitivity is obtained, and the laying method for the optical fiber cable for the distortion sensor with high specified accuracy at the generation point can be provided.