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A monitoring and early warning method for the stability of surrounding rock in large-span underground engineering excavation

A technology for surrounding rock stability and underground engineering, which is applied in the direction of earth drilling, mining equipment, mining equipment, etc., to achieve the effect of easy monitoring

Active Publication Date: 2017-04-05
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies and defects of the existing traditional methods of mechanical analysis and evaluation of the stability of surrounding rock, and propose a method for monitoring and early warning of the stability of surrounding rock in large-span underground engineering excavation

Method used

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  • A monitoring and early warning method for the stability of surrounding rock in large-span underground engineering excavation
  • A monitoring and early warning method for the stability of surrounding rock in large-span underground engineering excavation
  • A monitoring and early warning method for the stability of surrounding rock in large-span underground engineering excavation

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Embodiment Construction

[0050] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0051] In this embodiment, the content of the present invention is described in detail by taking the surrounding rock of a roadway in a metal mine as an example. The geological conditions of the surrounding rock in the roadway of the metal mine have been ascertained, and it meets the application conditions of the invention.

[0052] It should be understood that the focus of the present invention lies in the improvement of the monitoring and early warning method for the stability of the surrounding rock in underground engineering excavation, and the deformation monitoring equipment and stress monitoring equipment of the surrounding rock, such as precision levels, steel rulers, measuring piles and steel strings. Type pressure box, etc., in the case of satisfying the reliability of equipment operation, those skilled in the art should know its specific installatio...

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Abstract

The invention discloses a large-span underground construction surrounding rock excavation stability monitoring and early warning method. The method comprises the steps that a surrounding rock monitoring section is selected, and section monitoring points are arranged; a surrounding rock deformation monitoring device and a stress monitoring device are installed; the surrounding rock deformation monitoring device and the stress monitoring device are applied according to the stability conditions of the surrounding rock at different stability stages, and the stress and displacement of corresponding monitoring points of the different excavation stages are monitored; the surrounding rock excavation displacement power load increasing rate eta i is determined and serves as the surrounding rock excavation stability evaluation parameter, and evaluating and early warning are conducted on the surrounding rock stability. The large-span underground construction surrounding rock excavation stability monitoring and early warning method has the advantages that the underground cavern surrounding rock excavation monitoring area stress change parameter and the corresponding displacement response parameter are organically coupled, the parameters can reflect the dynamic change rule of the surrounding rock stability along with the excavation construction, and analysis and prediction can be carried out on the future surrounding rock excavation deformation development rule and the stability evolutionary trend.

Description

technical field [0001] The invention relates to the field of stability evaluation, monitoring and early warning of surrounding rock in excavation of underground engineering, in particular to a method for evaluating and early warning of surrounding rock stability by using coupling monitoring of stress and displacement of surrounding rock in underground engineering. Background technique [0002] Underground engineering refers to the underground space engineering formed in the strata along with human engineering and production activities. It mainly includes underground caverns formed by underground mining, urban underground space, hydropower underground caverns, and tunnels. With the development of the economy and the progress of society, especially with the full development and utilization of underground space, the span and section of underground projects are becoming larger and larger. In the construction of underground projects, surrounding rock instability and collapse disas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18
Inventor 贺可强郭璐
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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