Distributed optical fiber test platform for monitoring earth rock dam seepage condition

Abstract

The invention discloses a distributed optical fiber test platform for monitoring an earth rock dam seepage condition. The distributed optical fiber test platform comprises a heating system, a seepage system and a DTS system; the distributed optical fiber test platform is a practical platform having strong operability, aimed at dam seepage monitoring and based on construction of a dam seepage monitoring two-field coupling simplified model; with combination of the DTS system, the distributed optical fiber test platform provides a possibility for a practical application of seepage monitoring engineering of a porous medium structural body, such as an earth rock dam and a dyke-dam, and builds a reliable test platform for various related test researches; and the distributed optical fiber test platform has the advantages of wide test range, high precision, simple layout, low monitoring cost, high working efficiency, strong engineering applicability and the like.

Description

technical field [0001] The invention relates to a distributed optical fiber test platform for monitoring seepage conditions of earth-rock dams, and belongs to the technical field of distributed optical fiber temperature sensing. Background technique [0002] The optical fiber is used as both a sensor and a transmission medium. Its structure is simple, it is not only convenient for construction, but also has strong maintainability and high reliability. The potential failure rate is much lower than that of traditional technology. Since Mendez and others first embedded optical fiber sensors in concrete structures for structural safety detection in 1989, scholars from various countries have further promoted the application of this technology in civil and hydraulic engineering. In recent years, with the construction of large-scale water conservancy projects and the requirements of water conservancy modernization, distributed optical fiber temperature sensing technology has been s...

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Problems solved by technology

[0005] Seepage monitoring using optical fiber temperature measurement is divided into heating method and gradient method, but now all research is focused on the derivation of pure theoretical equations or pure experimental research, the result is that the correctness of the theoretical formula is non-committal and for the sake of experimentation. Experiment, due to the separation of theory and experiment, up to now, there has not been established a set of theories and corresponding practical methods that are really applied to the seepage monitoring of dams, so there is an urgent need for an earth-rock dam seepage test platform

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