Landslide monitoring sensor and manufacturing method thereof

Abstract

The invention discloses a landslide monitoring sensor. The landslide monitoring sensor comprises a sensor main body, wherein the sensor main body comprises a plurality of measuring bars which are connected in series; the plurality of measuring bars connected in series comprise first grooves, and second grooves and third grooves which are symmetrically formed in the both sides of the first grooves; optical fibers are fixedly arranged in the first grooves, the second grooves and the third grooves; Bragg gratings are arranged among the optical fibers; white casing pipes are fixedly arranged outside the optical fibers in the second grooves and the third grooves; flexible metal tubes are fixedly arranged outside the white casing pipes in the third grooves. The landslide monitoring sensor disclosed by the invention has the benefits that the landslide monitoring sensor uses the optical fiber sensing technology, so that the size of the landslide monitoring sensor can be effectively reduced, the landslide monitoring sensor is not prone to suffer from moisture and corrosion, cannot be interfered by the electromagnetic field, and sensitive to the small strain, the properties of the landslide monitoring sensor can be effectively ensured, and meanwhile the manpower and financial resources can be reduced.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a landslide monitoring sensor and a manufacturing method thereof. Background technique [0002] my country is a mountainous country, and the mountainous area accounts for about 2 / 3 of the country's total area. At the same time, my country is also one of the countries with more landslides in the world. Landslides are the biggest natural disasters except earthquakes. There are many factors affecting landslides, such as geological stress, lithology and rock mass structure, etc., but they all manifest as displacement between the landslide surface and the rock layer. Therefore, by measuring the small displacement between the geological internal rock layers, the effect of geological stress can be sensed. When the small relative displacement between the internal rock layers is measured, the possible landslides can be effectively predicted, and early warning can be used to reduce the ris...

AI Technical Summary

Problems solved by technology

However, most of the existing monitoring sensors have shortcomings such as being susceptible to electromagnetic field interference, insensitive to small strains, and large in size, and because the environment in which they are located is relatively humid and corrosive, the performance and stability of the existing sensors are still low. needs improvement

[0004] Aiming at the problems that the existing sensors described in the above-mentioned related technologies are susceptible to electromagnetic field interference, insensitive to small strain force, large in size and not resistant to moisture and corrosion, no effective solution has been proposed so far

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