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Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change

A technology of optical fiber intelligence and three-dimensional shape, which is applied in the direction of measuring devices, optical devices, and basic structure tests, etc., to achieve the effect of simple manufacturing method, favorable promotion and application, and guaranteed reliability and accuracy

Pending Publication Date: 2022-06-10
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will damage the anchor, and the calibrated anchor cannot be used any longer. The calibration result can only serve as a reference for the rest of the anchor, which leads to large errors in actual measurement.

Method used

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  • Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change
  • Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change
  • Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change

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Embodiment Construction

[0049] The bolts used in the present invention are any bolts with a grouting channel in the middle, such as plug-in hollow bolts, self-drilling hollow bolts, shell-expanding prestressed hollow bolts, combined hollow bolts, etc. This embodiment takes the plug-in hollow anchor rod as an example, such as figure 1 As shown, the plug-in hollow anchor includes an anchor head, an anchor rod, a grout plug, a backing plate and a nut. A grouting hole is formed on the body of the anchor rod, the outer wall of itself is threaded, and the inner side of the bottom of the anchor rod is threaded. When the sensing intermediate body is installed into the anchor rod, the support base plate is first fixed on the bottom of the anchor rod through the thread of the outer ring of the base plate, and then the sensing intermediate body fixed with the support body is inserted into the anchor rod so that the bottom of the sensing intermediate body The threaded posts pass through the through holes of th...

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Abstract

The invention provides an optical fiber intelligent anchor rod capable of detecting three-dimensional shape changes. The device is composed of an anchor head, an anchor rod, a stop-grouting plug, a base plate, a nut, a sensing intermediate body with a multi-core fiber grating array, a supporting body, a supporting bottom plate, a multi-core fiber fan-in and fan-out device, a grating demodulator and a computer. Wherein the calibrated sensing middle body is arranged in the middle of the anchor rod and is fixed with a screw hole of the supporting bottom plate through a stud at the bottom of the middle body, the supporting base is connected with the anchor rod through an outer ring thread, and a slurry outlet is formed in the anchor rod. The device is simple in structure and convenient to install, does not need to damage the structure of the anchor rod, does not affect grouting of the hollow anchor rod, can perform calibration in advance, realizes long-term monitoring of the three-dimensional shape change of the anchor rod, and can be widely applied to the technical field of geological disaster prevention and control.

Description

technical field [0001] The invention relates to an optical fiber intelligent bolt capable of detecting three-dimensional shape changes, and belongs to the technical field of geological disaster prevention and control. Background technique [0002] Karst landforms have a high rock exposure rate, low soil formation rate, and poor water storage capacity. Under the influence of man-made destruction and natural disturbance, landslide geological disasters occur frequently, biodiversity decreases, and soil erosion is serious, which directly endangers the lives of residents and causes massive economic losses. In the context of strengthening the construction of ecological civilization, it is urgent to monitor, early warning, restore and protect karst landform resources in some areas. Most of the landslide geological disasters in typical karst landforms have the characteristics of many rock masses, high and steep slopes, and sudden collapses, which increases the difficulty of landsli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E02D33/00G01B11/24G01B11/16E02D17/20
CPCE02D5/74E02D33/00G01B11/24G01B11/18E02D17/20
Inventor 曲士良王洪业苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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