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Subway surface subsidence early warning system

A technology of surface subsidence and early warning system, applied in geophysical measurement, permeability/surface area analysis, instruments, etc., can solve problems such as forecasting and prevention and control problems, and achieve the effect of simple structure, increased safety, and convenient layout

Active Publication Date: 2020-10-16
SICHUAN UNIV
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  • Description
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Problems solved by technology

This kind of subsidence disaster is common in the field of subway construction, and its prediction and prevention is a huge problem, which has not been solved so far.

Method used

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  • Subway surface subsidence early warning system
  • Subway surface subsidence early warning system

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Embodiment Construction

[0015] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] It is to be understood that descriptive terms herein, such as "comprising / comprising" and "consisting of" or any other variation thereof, are intended to cover a non-exclusive inclusion such that a product comprising a series of elements A device, process or method includes not only those elements, but also includes other elements not explicitly listed when necessary, and even includes elements inherent in the product, device, process or method. Without further limitations, elements defined by the phrases "comprising / comprising" and "consisting of" do not exclude the presence of additional identical elements in the product, apparatus, process or method comprising said elements Case.

[0017] Such as figure 1 and figure...

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Abstract

The invention provides a subway surface subsidence early warning system. The subway surface subsidence early warning system comprises a pre-buried isotope tracer filling pipe, a signal monitoring device, a signal transmission device, a signal processing system and a surface subsidence early warning system. After the isotope tracer filling pipe is pre-buried in the lining wall of a subway tunnel segment, a 18O isotope tracer mixed with a hydrophilic reagent dimethylolpropionic acid (DMPA) is periodically filled in the tunnel construction period, and the tracer has the characteristic of tracingthrough reverse propagation in the water seepage direction; the signal monitoring device can monitor the propagation path of the isotope and convert the path into a current signal; the signal transmission device collects monitored isotope tracer diffusion signals and transmits the signals to the signal processing system; the signal processing system converts the received signal into a three-dimensional visual image to obtain a settlement displacement field; and the surface subsidence early warning system judges the state of cavities under the surface according to the signal processing result,and sends subsidence early warning in time.

Description

technical field [0001] The invention relates to the fields of monitoring and forecasting of surface subsidence in subway construction and prevention and control of subsidence disasters, in particular to an early warning system for surface subsidence of subways. Background technique [0002] During the shield construction of subway tunnels, the soil layer consolidation due to stratum loss and groundwater loss will cause surface subsidence or sudden subsidence, resulting in property losses and casualties. According to statistics, as of January 2020, 78 surface subsidence accidents occurred in 46 cities with subways in my country, including Hong Kong, Macao, and Taiwan, resulting in 92 deaths and 34 injuries, causing immeasurable economic and property losses. Such subsidence disasters are ubiquitous in the field of subway construction, and their prediction and prevention are huge problems that have not been solved so far. [0003] Isotope refers to a class of atoms with the sa...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01M3/20G01V15/00G01C5/00E21F17/18
CPCG01N15/08G01M3/20G01V15/00G01C5/00E21F17/18
Inventor 袁勋刘长武康舜
Owner SICHUAN UNIV
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