A monitoring method for slurry cracks based on strain loss

A slurry and crack technology, applied in the field of slurry crack monitoring based on strain loss, can solve problems such as difficult to waterproof external noise interference, easy to be affected by environmental noise, unable to monitor slurry cracks, etc., achieving low cost and high calculation accuracy. , the effect of high reliability

Active Publication Date: 2020-12-01
WUHAN UNIV OF TECH
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Problems solved by technology

However, the above-mentioned methods have certain limitations. The piezoelectric ceramic sensor of the piezoelectric ultrasonic monitoring method has a low survival rate and is easily affected by environmental noise. It is difficult to completely waterproof and avoid external noise interference in slope protection projects; the image recognition method is only It can judge the cracks on the surface of the structure, but cannot monitor the cracks in the slurry embedded in the slope; the optical time domain and optical frequency domain reflectometer monitoring methods are difficult to characterize and calculate the crack size, and cannot provide an accurate evaluation index for the crack size of the anchoring slurry

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  • A monitoring method for slurry cracks based on strain loss
  • A monitoring method for slurry cracks based on strain loss
  • A monitoring method for slurry cracks based on strain loss

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[0022] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0024] I...

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Abstract

The invention discloses a slurry crack monitoring method based on strain loss. A system for measuring the strain of a slope anchor rod and anchoring slurry and a set of algorithm for accurately calculating the crack condition of the anchoring slurry are adopted; actual measurement data based on a fiber bragg grating strain sensor is accurately obtained; through precise calculations, specific expansion indexes of the cracks of the anchoring slurry are given; the method can be effectively suitable for monitoring and calculating the anchoring slurry cracks in the severe slope environment for a long time, the sizes of the anchoring slurry cracks are accurately provided, landslide risk assessment is facilitated, the method is low in cost, high in reliability and high in calculation precision, and long-term and real-time monitoring of the slurry health of the anchoring structure is effectively achieved. The method is applied to the technical field of anchoring structure monitoring.

Description

technical field [0001] The invention relates to the technical field of anchorage structure monitoring, in particular to a method for monitoring slurry cracks based on strain loss. Background technique [0002] There are many mountainous areas in our country. In order to effectively prevent natural disasters such as mudslides and landslides, slope anchorage structures are widely used in slope protection projects. However, it is difficult to detect the health status of the slope anchoring project, especially the problems caused by the difficulty in monitoring the crack expansion of the anchoring slurry, which often brings huge losses to the entire project. Facing the problem that it is difficult to monitor the cracks in the anchoring slurry of the slope, it is of great significance to use information equipment and accurate calculation to reflect the expansion of the cracks in the anchoring slurry in real time. [0003] The existing crack monitoring methods include piezoelectr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16
CPCG01B11/165
Inventor 徐东升刘启超陈波
Owner WUHAN UNIV OF TECH
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