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Wireless joints displacement measuring system for metro shield tunnel

A subway shield and displacement measurement technology, applied in wireless communication, signal transmission systems, instruments, etc., can solve the problems of lack of real-time, effective and reliable methods

Inactive Publication Date: 2014-12-24
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Segment joint opening is an important defect caused by tunnel lateral convergence and longitudinal uneven settlement. At present, its detection is mainly manual detection, and there is a lack of a real-time, effective and reliable method.

Method used

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  • Wireless joints displacement measuring system for metro shield tunnel
  • Wireless joints displacement measuring system for metro shield tunnel
  • Wireless joints displacement measuring system for metro shield tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] figure 2 A wireless joint displacement measurement system suitable for subway shield tunnels is shown. The system includes five parts: a displacement sensor module 1 , a temperature compensation module 2 , a microprocessor module 3 , a wireless transceiver module 4 and a host computer 5 .

[0029] Among them, the displacement sensor module 1 includes a plurality of wireless displacement sensors fixed by the connection mode of bearings, which are arranged at the seams of the shield tunnel segments (including longitudinal seams and annular seams), and can be used for shield tunnel segment seams The measurement of the opening amount can also be used to measure the opening amount of the segment crack, such as figure 2 shown. The two ends of the wireless displacement sensor are anchored on the segments on both sides of the joint by means of bearings. When the joint is opened / compressed, the wireless displacement sensor is driven to be axially stretched / compressed, thereby...

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Abstract

The invention relates to a wireless joints displacement measuring system for a metro shield tunnel. The system comprises a displacement sensor module, a temperature compensation module, a microprocessor module, a wireless transceiver module and a host computer. Through the displacement sensor module, width variation of tunnel joints can be detected at real time; and through filtering, anti-interference processing and temperature compensation, metro vibration noise and temperature influence are eliminated so as to achieve high-precision measurement requirements. In addition, by the use of a wireless network for data transmission, wiring requirements are simplified. Thus, the system is more suitable for the complex environment of an underground tunnel, and accurate, effective and real-time monitoring of tunnel structure changes is realized.

Description

technical field [0001] The invention relates to a tunnel measurement system, in particular to a wireless joint displacement measurement system suitable for subway shield tunnels. Background technique [0002] With the vigorous promotion of urbanization in our country, the subway, as a transportation mode with large transportation volume, fast speed, safety, punctuality, environmental protection and energy saving, has developed rapidly in my country, which has significantly improved the urban traffic situation. With the large-scale construction of urban subways, the structural health of operating subway tunnels has drawn more and more attention from the society. Due to construction defects, complex geological conditions, long-term loads, frequent train vibrations, material degradation and other reasons, the subway tunnels in operation have shown serious diseases. Therefore, the structural health monitoring of subway shield tunnels is particularly important. [0003] The sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C17/02H04W84/18
Inventor 黄宏伟何斌王魁文长辉
Owner TONGJI UNIV
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