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Subway foundation pit displacement monitoring system

A displacement monitoring and subway technology, applied in measuring devices, instruments, etc., can solve the problems of monitoring data errors and costs, and achieve the effect of preventing dangerous accidents

Active Publication Date: 2016-11-09
中交三公局工程技术有限公司
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Problems solved by technology

Since foundation pit monitoring often requires high data accuracy and monitoring frequency, and due to the limitations of construction site excavation site conditions and harsh environments, the monitoring process costs money and often has monitoring data errors. Advanced monitoring technology is very necessary

Method used

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Embodiment Construction

[0034] The present invention will be described in further detail below, so that those skilled in the art can implement it with reference to the description.

[0035] The invention discloses a subway foundation pit displacement monitoring system, which at least includes:

[0036] A foundation pit side wall stress detection device, which is used to detect the stress values ​​of a plurality of pre-selected candidate monitoring points, and upload the stress value of each of the candidate monitoring points to the database;

[0037] A database, which pre-stores a three-dimensional model of the foundation pit to be monitored; the database receives the stress value, and marks the stress value in the three-dimensional model according to the position information of the candidate monitoring point corresponding to it; at the same time , selecting the candidate monitoring point with the smallest stress value from the three-dimensional model, and determining a monitoring point at an interva...

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Abstract

The invention provides a subway foundation pit displacement monitoring system. The system includes a foundation pit side wall stress detection apparatus which is intended for detecting stress values of a plurality of preselected candidate monitored points; a database which pre-stores a 3D model of a to-be-monitored foundation pit. According to the system, the candidate monitored point that has the minimum stress value is selected from the 3D model, and one monitored point is determined at the horizontal line where the candidate monitored point at an interval of 2-6 meters. The system also includes a measuring column which is arranged inside the to-be-monitored foundation pit, and the measuring column is separately provided with a range sensor and an angle gauge on the side wall thereof facing the to-be-monitored foundation pit. The system determines displacement monitored points through detecting stress values of the side wall of the to-be-monitored foundation pit, then detects changes of the ranges and angles between each monitored point and the measuring column so as to achieve monitoring of the displacement of the subway foundation pit.

Description

technical field [0001] The invention belongs to the field of subway foundation pits, in particular to a displacement monitoring system for subway foundation pits. Background technique [0002] Urban subway is the focus of infrastructure investment in my country in recent years, and vigorously developing urban subway has become the focus of municipal construction in large and medium-sized cities. Most of my country's subways are buried more than ten to twenty meters underground, or even deeper, so it is essential to ensure construction safety. Statistical analysis found that, without exception, any foundation pit accident is related to poor monitoring or inaccurate danger forecast. Therefore, the safe and stable state of the foundation pit determines whether the entire project construction can be completed smoothly, and the displacement monitoring related to the foundation pit occupies a very important position in the subway construction. [0003] Foundation pit displacemen...

Claims

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Application Information

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IPC IPC(8): G01B21/04G01B21/32
CPCG01B21/04G01B21/32
Inventor 霍立飞陈荣田军王聪
Owner 中交三公局工程技术有限公司
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