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Shield tunnel joint opening and dislocation monitoring system based on optical fiber reflection principle

A technology of shield tunneling and optical fiber, which is applied in measurement devices, optical devices, instruments, etc., can solve problems such as low monitoring efficiency

Active Publication Date: 2019-07-23
THE FRONTIER TECH RES INST OF TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem of low monitoring efficiency in the existing shield tunnel segment seam waterproof monitoring technology, and provide a displacement sensor device based on the principle of optical fiber reflection to effectively monitor the shield tunnel. Real-time monitoring of the opening and displacement of the segment joints to provide evaluation data for predicting the waterproof ability of the joints

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  • Shield tunnel joint opening and dislocation monitoring system based on optical fiber reflection principle
  • Shield tunnel joint opening and dislocation monitoring system based on optical fiber reflection principle
  • Shield tunnel joint opening and dislocation monitoring system based on optical fiber reflection principle

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings:

[0045] Based on the BP artificial neural network intelligent algorithm, the present invention proposes an early warning intelligent monitoring method for the joint waterproof performance of the subway shield tunnel segment in view of the problems in the traditional detection method for the seam waterproofing of the subway shield tunnel. Supervised learning of the sample data representing the waterproof ability of the joints, forming a neural network model of the waterproof ability of the seams, and diagnosing and analyzing the opening and misalignment of the joints of the formed shield tunnel segments, using this as an intermediate bridge to make Prediction and early warning of waterproof ability of segment joints. figure 1 for the flowchart.

[0046] The shield ...

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Abstract

The invention relates to a shield tunnel joint opening and dislocation monitoring system based on an optical fiber reflection principle. The shield tunnel joint opening and dislocation monitoring system based on the optical fiber reflection principle is used for monitoring the waterproof performance of segment joints, and comprises a displacement sensor monitoring device, a sliding rail axially fixed to an inner wall of tunnel segments, a movable data receiver and an upper computer, wherein the displacement sensor monitoring device comprises optical fiber displacement sensors, reflection sheets, a laser light source, a photovoltaic converter and a data collector; and the movable data receiver can move along the sliding rail to regularly receive the data of the data collector arranged in ashield tunnel and transmit to the upper computer.

Description

technical field [0001] The invention belongs to the field of shield tunnel engineering, and more specifically relates to an autonomous monitoring system for the amount of seam opening and staggered amount of subway shield tunnels. Background technique [0002] With the development of urbanization, the development of underground space is increasing, such as urban underground transportation, urban pipe corridors and so on. In the development of underground structures, prefabricated structures are highly praised. In prefabricated structures, the joints between prefabricated components are often the parts where water seepage occurs in the structure. When water leakage occurs at the joints, the safety of underground structures will be affected. under great threat. Therefore, in order to ensure the normal use of the subway shield tunnel, it is essential to monitor the waterproofing of the shield tunnel joints. [0003] The current traditional shield tunnel water leakage monitori...

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Application Information

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IPC IPC(8): G01B11/02E21F17/18
CPCE21F17/18G01B11/02
Inventor 丁超张稳军卢权威高文元王祎上官丹丹
Owner THE FRONTIER TECH RES INST OF TIANJIN UNIV
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