Subway tunnel leakage monitoring and early warning system and method

An early warning system and tunnel technology, applied in the direction of applying electrical devices to test fluid tightness, etc., to avoid interference

Active Publication Date: 2017-05-31
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of realizing long-term observation, effectively avoiding the interference of artificial field sources on the natural electric field, accurately finding the water outlet point of tunn...

Method used

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  • Subway tunnel leakage monitoring and early warning system and method
  • Subway tunnel leakage monitoring and early warning system and method
  • Subway tunnel leakage monitoring and early warning system and method

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Experimental program
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Embodiment 1

[0030] Such as figure 1As shown, the subway tunnel leakage monitoring and early warning system of this embodiment includes a parallel electrical method acquisition subsystem 1 , a wifi gateway 2 and a data monitoring subsystem 3 . The parallel electrical method acquisition subsystem 1 includes a parallel electrical method instrument host 1-1, a power conversion device 1-2, an electrical method large line 1-3, and electrodes 1-4, which are used to realize the on-site electrical measurement of the tunnel to obtain the electrical method. legal data.

[0031] The wifi gateway 2 is connected to the Ethernet 4 inside the tunnel, and is installed near the host 1-1 of the parallel electrical instrument for network link and instant communication between the data monitoring subsystem and the parallel electrical acquisition subsystem. Of course, the wifi gateway 2 can also adopt wired transmission, or a satellite communication system to realize network link and instant messaging.

[00...

Embodiment 2

[0036] Determine the distribution position of electrodes 1-4 according to the observation method in the layout plan, the distance between electrodes 1-4, the number of electrodes, and the length of the measuring line. The following principles should be followed: In general, the distance between electrodes 1-4 is 1-5m. If the detection accuracy is high, it is better to take 1-2m, and the key areas should be properly encrypted, and the length of the measuring line can be traced continuously In general, the infinity B pole is buried at the far end of 3 to 5 times the length of the survey line, and the common N pole is buried in the normal field far away from the percolation zone and the electric field is stable. Any location; the installation of electrodes 1-4 should avoid the power cables and other facilities in the tunnel 8; it should penetrate the tunnel wall and have no contact with the metal in the wall, and behind the tunnel wall, the electrodes 1-4 should be protected after...

Embodiment 3

[0058] Such as Figure 4aand Figure 4b As shown, this embodiment mainly uses the parallel electrical acquisition subsystem 1 to conduct seepage detection experiments on the built physical model system. in Figure 4a It is a schematic diagram of the seepage detection model system and measurement layout. The potential difference between the 1#-20# electrode 22 and the N pole is extracted synchronously, and the variation curve of the natural electric field with the electrode at multiple times is obtained, that is, the natural potential isochrone of the seepage process changes with the electrode. changing fluctuation curve, Figure 4b .

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Abstract

The invention discloses a subway tunnel leakage monitoring and early warning system and a method. The system comprises a parallel electrical acquisition subsystem, a wifi gateway and a data monitoring subsystem. The parallel electrical acquisition subsystem is used for realizing acquisition of electrical data in a tunnel. An electrical big line is arranged on the side wall of the tunnel and is electrically connected with a parallel electrical prospecting apparatus host. An electrode is connected to the electrical big line through a plug-pull clip. An infinity B pole and a public comparison electrode N pole are electrically connected with the parallel electrical prospecting apparatus host. The parallel electrical prospecting apparatus host is fixedly installed on one side of the inner side of the tunnel and is powered by a power supply conversion device. The wifi gateway is used for achieving network linkage and instant messaging of the data monitoring subsystem and the parallel electrical acquisition subsystem. The data monitoring subsystem is used for storing, managing and intelligently processing and analyzing the electrical data, and achieving remote control on the parallel electrical acquisition subsystem and dynamic monitoring and active early warning for tunnel leakage water damages.

Description

technical field [0001] The invention belongs to the field of geophysical monitoring, in particular to a leakage monitoring system and a leakage monitoring method in the field of tunnel water disaster monitoring, in particular to a subway tunnel leakage monitoring and early warning system and a subway tunnel leakage monitoring and early warning method. Background technique [0002] my country's urban subway construction is in a period of rapid development, but due to the complex hydrogeological environment of the city, water damage accidents occur frequently during the construction phase of subway tunnels, and water damage due to tunnel leakage during the operation phase also emerges endlessly. When the subway tunnel passes through rivers, lakes and other surface water bodies or underground man-made complex areas, if the prevention and treatment measures are not proper, it is easy to cause the water body to infiltrate and cause water leakage in the tunnel, and then induce wate...

Claims

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Application Information

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IPC IPC(8): G01M3/40
CPCG01M3/40
Inventor 周官群吴小平陈陆望朱术云孙超刘淼仔王仙芝陈世贵杨世武
Owner UNIV OF SCI & TECH OF CHINA
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