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Rock-soil body deformation monitoring device based on distributed optical fiber

A distributed optical fiber and deformation monitoring technology, applied in the field of geological exploration, can solve the problems of inaccurate horizontal displacement of rock and soil mass and inaccurate inclination angle

Pending Publication Date: 2021-02-12
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the accuracy of the measured inclination angle is not very high, and the calculation is also a myopic calculation, so the obtained horizontal displacement of the rock and soil mass is not very accurate

Method used

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  • Rock-soil body deformation monitoring device based on distributed optical fiber
  • Rock-soil body deformation monitoring device based on distributed optical fiber

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Embodiment

[0041] This embodiment provides a distributed fiber-based rock and soil deformation monitoring device, such as figure 1 As shown, the device includes a distributed optical fiber and an optical fiber information recording component 30. The distributed optical fiber includes a counterweight guide head 10 and a sensing optical cable 20; slot 110, one end of the sensing optical cable 20 is connected to the first terminal 310 of the optical fiber information recording component 30, and the other end is connected to the second terminal 320 of the optical fiber information recording component 30 after passing through the U-shaped groove .

[0042] The sensing optical cable 20 is used to measure the displacement of rock and soil at a predetermined depth underground, and then obtain deformation conditions, including horizontal deformation and vertical deformation (settlement). In the figure, the sensing optical cable 20 is located in a detection hole 40 .

[0043] Here, the detection...

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Abstract

The invention discloses a rock-soil body deformation monitoring device based on a distributed optical fiber. The device comprises the distributed optical fiber and an optical fiber information recording part, and the distributed optical fiber comprises a counterweight guide head and a sensing optical cable for measuring the displacement of a rock-soil body; a U-shaped groove with an upward openingis formed in the top end of the counterweight guide head, one end of the sensing optical cable is connected with a first binding post of the optical fiber information recording part, and the other end of the sensing optical cable penetrates through the U-shaped groove and then is connected with a second binding post of the optical fiber information recording part. The rock-soil body deformation monitoring device based on the distributed optical fiber can accurately monitor the deformation condition of a deep rock-soil body.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a rock and soil body deformation monitoring device based on distributed optical fibers. Background technique [0002] More and more infrastructures such as high-speed railways, expressways, and high-grade highways need to monitor the deformation of deep rock and soil during construction and overhaul, so as to improve the quality and service life of high-speed railways, expressways, and high-grade highways . [0003] At present, the deformation monitoring method of deep rock and soil mainly adopts the method of borehole inclinometer. The inclinometer is an in-situ monitoring instrument for measuring the inclination and azimuth of a borehole. [0004] However, this method has the disadvantage of poor sensitivity. The borehole inclinometer measures the inclination angle of the inclinometer pipe within every 1m (or 0.5m), and calculates the horizontal displacement o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/18G01B11/165
Inventor 王祥周根郯郭建湖李小和王亚飞熊林敦王欢朱树念刘晶莹
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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