Distributed fiber-based geomembrane breakage leakage quantity monitoring system and monitoring method

Abstract

The invention discloses a distributed fiber-based geomembrane breakage leakage quantity monitoring system. The distributed fiber-based geomembrane breakage leakage quantity monitoring system comprisesa seepage system, a heating system and a DTS system, wherein the seepage system comprises a model groove and a water supply system, an embankment dam sectional model and a geomembrane are arranged inthe model groove, the water supply system is used for providing seepage for the embankment dam sectional model, the heating system is used for providing a hot source for the embankment dam sectionalmodel, the DTS system comprises an optical fiber, DTS demodulation equipment and an industrial personnel computer which are sequentially connected, the industrial personnel computer is used for acquiring and analyzing temperature and corresponding position information of the optical fiber, a part of the optical fiber is arranged on the geomembrane, and the other part of the optical fiber is arranged in the geomembrane breakage leakage model. The invention also discloses a distributed fiber-based geomembrane breakage leakage quantity monitoring method. The data monitored by the method is high in continuity, the seepage condition of the whole dam can be reflected, a breakage position and seepage quantity of the geomembrane can be deducted according to a temperature change rule of the opticalfiber, and the distributed fiber-based geomembrane breakage leakage quantity monitoring system and method can be used in actual engineering.

Description

technical field [0001] The invention belongs to the technical field of dam safety monitoring, and relates to a geomembrane damage leakage monitoring system and a monitoring method based on distributed optical fibers. Background technique [0002] The anti-seepage bodies of traditional earth-rock material dams are basically clay core walls, inclined walls, inclined core walls, concrete panels, and asphalt concrete core walls. Compared with the above-mentioned anti-seepage bodies, geomembrane has superior anti-seepage performance. At the same time, it has the advantages of simple construction, low cost, and wide application conditions. In recent years, it has been widely used in the anti-seepage of various hydraulic structures. structure. [0003] my country's geomembrane anti-seepage technology started late, not only limited by the early geomembrane production technology, durability and construction technology, but also considering the different degrees of splicing joints, c...

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Problems solved by technology

[0008] An object of the present invention is to provide a geomembrane damage and leakage monitoring system based on distributed optical fibers, which solves the problem that the existing geomembrane damage monitoring method can only monitor at points, the monitoring data is discontinuous, and cannot reflect the overall seepage situation of the dam question

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