No-heat source optical fiber positioning and orientation system and monitoring method for leakage of wading structures

Abstract

The invention discloses a non-heat source optical fiber positioning and orientation system and monitoring method for leakage of wading structures, including several seepage monitoring devices connected by rotating brackets, and the seepage monitoring devices include first seepage monitoring units distributed symmetrically front and back and The second seepage monitoring unit symmetrically distributed on the left and right, the first seepage monitoring unit and the second seepage monitoring unit are distributed with seepage measurement optical fiber, and the seepage condition of the wading structure is monitored through the seepage measurement optical fiber. A non-heat source optical fiber positioning and orientation system for leakage of wading structures of the present invention has the characteristics of no need for heating, distribution, multi-directionality, synchronization, etc., and has outstanding advantages in reducing monitoring costs, improving monitoring accuracy, and engineering practicality. Advantages: The monitoring method of the present invention flexibly arranges the seepage monitoring device in the wading structure, and obtains the position and direction of the seepage through the comparison of the calibration optical fiber and the seepage measurement optical fiber. The operation is simple and the result is accurate.

Description

technical field [0001] The invention relates to the positioning and orientation of hidden dangers of wading structures, in particular to a non-heat source optical fiber positioning and orientation system and monitoring method for leakage of wading structures. Background technique [0002] Seepage is an important factor and prominent disease that affects the safe and long-term service of wading structures in hydraulic engineering, marine engineering, and underground engineering. Especially for earth-rock structures such as earth-rock dams and embankments, a large number of damages and even accidents are due to leakage of different degrees. According to statistics, more than 90% of embankment failures in my country, and more than one-third of the damage in earth-rock dam projects are due to leakage. Research and develop advanced and practical leakage location and orientation instruments, devices and identification methods to reliably detect the location, range, direction and si...

AI Technical Summary

Problems solved by technology

However, the existing distributed optical fiber penetration measurement technology at home and abroad often needs to use external heat sources to heat the optical fiber to be tested. If the outer packaging layer is damaged or leakage occurs during heating, it will pose a threat to the personal safety of the operator. In addition, in the service environment of wading structures, it is often difficult to guarantee the peripheral current heating system, which greatly hinders the application and promotion of this technology in actual engineering

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