Angle displacement meter based on optical fiber sensing technology and installation method thereof

Abstract

The invention discloses an angle displacement meter based on an optical fiber sensing technology and an installation method thereof, and the angle displacement meter is characterized in that the angle displacement meter comprises a guide wheel system; a sensing optical cable is wound on the guide wheel system; a high-strength epoxy adhesive is arranged between the guide wheel system and the sensing optical cable; hollow connecting rods are connected through the guide wheel system and the sensing optical cable, the guide wheel system is installed on the hollow connecting rods, and the sensing optical cable penetrates through the hollow connecting rods; and the sensing optical cable is connected with a demodulator through an optical fiber patch cord. The angle displacement meter based on the optical fiber sensing technology is provided for solving the problem that distributed monitoring of landslide internal displacement cannot be accurately achieved in the prior art, the angle displacement meter can achieve distributed monitoring of landslide internal displacement, and strain loss in the process that structural strain is transmitted to an optical fiber sensor through deformation of a bonding layer is reduced.

Description

technical field [0001] The invention relates to an angular displacement meter based on optical fiber sensing technology and an installation method thereof, belonging to the technical field of in-slope displacement detection. Background technique [0002] The occurrence of landslide disasters will cause huge casualties and economic losses. Landslides are affected and affected by various factors, such as rainfall, reservoir water level, rock and soil properties, etc., so it is difficult to accurately judge the occurrence time of landslide disasters. Landslide instability is usually accompanied by significant displacement. Therefore, accurate monitoring of landslide displacement is very important in the prevention and early warning of landslide disasters. [0003] Landslide displacement monitoring can be divided into surface displacement monitoring and slope displacement monitoring. Slope surface displacement monitoring means (GPS, GIS, RS, SAR) can accurately monitor the dis...

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Problems solved by technology

[0007] From the above analysis, it can be clearly seen that the current technology cannot accurately realize the distributed detection of the internal displacement of the landslide, and the traditional detection technology has the problems of low sensitivity, inability to resist electromagnetic interference, short monitoring distance and high cost

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