Intelligent monitoring method of waterproof performance of early warning subway shield tunnel segment joints

Abstract

The invention relates to an intelligent monitoring method of waterproof performance of early warning subway shield tunnel segment joints, which is used for monitoring waterproof performance of segmentjoints. An adopted segment joint monitoring system comprises a displacement sensor monitoring device, a slide rail fixed on the inner wall of the tunnel segment axially, a mobile data receiver and anupper computer, the displacement sensor monitoring device comprises an optical fiber displacement sensor, a reflector sheet, a laser source, a photoelectric converter, and a data collector, and the mobile data receiver can move along the slide rail so as to receive and transmit data of the data collector distributed in the shield tunnel to the upper computer regularly.

Description

technical field [0001] The invention belongs to the field of shield tunnel engineering, and more specifically relates to an intelligent monitoring method for waterproof performance of joints of subway shield tunnels. Background technique [0002] During the operation of the subway shield tunnel, the leakage of water at the joints of the segment has an adverse effect on the health of the tunnel structure, which may weaken the durability and applicability of the tunnel. If it is not treated in time, the water seepage outside the pipe ring will cause the surrounding soil The loss of particles will cause changes in the stress field outside the pipe ring, which will have a certain adverse effect on the structure of the pipe ring. On the other hand, water seepage from the joints will penetrate into the joints of the segments after passing through the gasket. Under a certain carbon dioxide concentration and relative humidity environment, it is easy to cause The carbonization of joi...

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic traditional shield tunnel water leakage monitoring method is to arrange four professionally qualified personnel to conduct regular inspections on the shield tunnel, including: lighting, photographing, tunnel inspection and recording. It takes about 3 hours to 4 hours for each section. After obtaining the data, it is necessary to arrange personnel to organize and analyze it. 1 shield section requires 3 to 4 personnel to spend 1 day. Taking 20 sections of a typical subway tunnel line as For example, it takes about 800 hours and 160 person-times to complete the detection of one line. During the detection process, due to the negligence of the staff, the detection points are ignored, data errors and other reasons reduce the efficiency of manual detection. At the same time, the detection and analysis cycle of traditional methods is too long And the demand for personnel is too large, which greatly reduces the detection efficiency of the waterproof performance of the subway shield tunnel

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