Rock concrete structural body stability monitoring and early warning method based on static magnetic field detection

A technology of monitoring and early warning and structure, applied in the direction of applying stable tension/pressure to test material strength, electromagnetic measuring device, electric/magnetic solid deformation measurement, etc., can solve the problem of insufficient reliability of monitoring results and can not reflect rock concrete structure Internal changes and other issues, to achieve reliable evaluation results, good immediacy, and strong adaptability

Pending Publication Date: 2021-09-17
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0004] The present invention provides a rock-concrete structure stability monitoring and early warning method based on static magnetic field detection to solve the problem that the existing rock-concrete structure stability monitoring and early warning method cannot reflect changes inside the rock-concrete structure, and the reliability of monitoring results is insufficient technical issues

Method used

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  • Rock concrete structural body stability monitoring and early warning method based on static magnetic field detection
  • Rock concrete structural body stability monitoring and early warning method based on static magnetic field detection
  • Rock concrete structural body stability monitoring and early warning method based on static magnetic field detection

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no. 1 example

[0040] By monitoring the internal stress and deformation of the rock-concrete structure, the load-bearing and deformation of geotechnical engineering can be monitored, so as to make an accurate evaluation of its stability. Based on this, this embodiment provides a rock-concrete structure stability monitoring and early warning method based on static magnetic field detection with good immediacy, strong adaptability and high reliability to solve the existing rock-concrete structure stability monitoring and early warning method The method cannot reflect the internal changes of the rock-concrete structure and the technical problems of insufficient reliability of the monitoring results. The method is suitable for the monitoring and stability evaluation of the load-bearing and deformation conditions of geotechnical engineering. The execution flow of this method is as follows figure 1 shown, including the following steps:

[0041] S101, prepare magnetic concrete specimens with concre...

no. 2 example

[0051] see figure 2 and image 3 , This embodiment provides a method for monitoring and early warning of the stability of rock-concrete structures based on static magnetic field detection, which is applicable to the monitoring and stability evaluation of bearing and deformation conditions in geotechnical engineering.

[0052] The execution flow of this method is as follows figure 2 shown, including the following steps:

[0053] S201. According to the geotechnical engineering monitoring requirements, determine the rock-concrete structure 1 that needs to be monitored for stability, and select a dense bottom position of the rock-concrete structure 1 as a test location.

[0054] S202, take the concrete material with the preparation label C80, add 1 / 5 of its mass of iron-nickel alloy particles with a diameter of 1mm, and use a vibrating rod to stir evenly; put the mixture of concrete and magnetic materials into 20cm 3 Add water to the above-mentioned large-scale molds and form...

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Abstract

The invention discloses a rock concrete structural body stability monitoring and early warning method based on static magnetic field detection. The method comprises the following steps: preparing a magnetic concrete test piece from concrete and a magnetic material; excavating a cavity which has the same volume as the test piece and is used for accommodating the test piece on the rock concrete structure body to be monitored; fixing a magnetic field sensor right in front of the cavity, and testing the magnetic field intensity of the current environment; putting the test piece into the cavity; testing the magnetic field intensity of the test piece in the cavity by using the magnetic field sensor until the data of the magnetic field sensor is stable, and reading the initial magnetic field intensity of the test piece in the cavity; periodically testing the magnetic field intensity of the test piece in the compressive deformation process; based on the change rate of the magnetic field intensity of the test piece, judging the stability of the rock concrete structural body to be monitored according to a preset judgment criterion, so that monitoring and early warning of the stability of the rock concrete structural body to be monitored are achieved. The method has the advantages of low test cost, high sensitivity, high accuracy and the like.

Description

technical field [0001] The invention relates to the technical field of stability monitoring of rock-concrete structures such as buildings, bridges, mines and tunnels, and in particular to a method for monitoring and early warning of the stability of rock-concrete structures based on static magnetic field detection. Background technique [0002] In recent years, rock or concrete structures such as buildings, bridges, mines, and tunnels often appear unstable under stress, which seriously threatens the safety of geotechnical engineering. Monitoring the stability of rock-concrete structures, discovering the danger of instability in time and giving early warning are important ways to prevent and control geotechnical engineering disasters. [0003] At present, the monitoring technology for the stability of rock-concrete structures is mainly realized by using the inclinometer to measure the displacement change of the structure, or using the deformation or settlement of the support ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/24G01N3/02G01N3/06G01N3/08G08B21/18
CPCG01B7/24G01N3/02G01N3/06G01N3/08G08B21/18
Inventor 邱黎明宋大钊何学秋殷山李振雷李杰
Owner UNIV OF SCI & TECH BEIJING
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