| 摘要 |
An integrated system for distributed optical fiber sensing of hydraulic structure seepage, comprising a specially produced optical fiber for seepage measurement (143), an optical fiber calibration apparatus, an optical fiber laying apparatus, and a seepage identification apparatus. After the optical fiber calibration apparatus calibrates the specially produced optical fiber for seepage measurement (143) on site, the specially produced optical fiber for seepage measurement (143) is laid and tested by means of the optical fiber laying apparatus, and is connected to the seepage identification apparatus for information collection, processing and analysis after the test succeeds. The system can complete high-efficiency calibration of a long-distance optical fiber and reliable control and measurement of the bending curvature. By combining the specially produced optical fiber for seepage measurement (143), having a self-controlled heat source, and a seepage identification technology based on a femtosecond pulse, the seepage of a hydraulic structure can be sensed with high precision and high spatial resolution, at high sensing speed and at long distance. Also provided is a method for distributed optical fiber sensing of hydraulic structure seepage. |
