Method for measuring three-dimensional deformation of cross section of underground cavity

A technology for underground caverns and three-dimensional deformation, which is applied in the direction of measuring devices and instruments, and can solve the problem of inability to accurately measure the three-dimensional deformation of the cross-section of underground caverns.

Active Publication Date: 2015-12-02
SICHUAN UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for measuring the three-dimensional deformation of the cross-section of the underground cavern in order to overcome the shortcomings of the existing methods that cannot accurately measure the three-dimensional deformation of the cross-section of the underground cavern

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  • Method for measuring three-dimensional deformation of cross section of underground cavity
  • Method for measuring three-dimensional deformation of cross section of underground cavity
  • Method for measuring three-dimensional deformation of cross section of underground cavity

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Embodiment Construction

[0074] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0075] Such as figure 1 As shown, the measurement method of the three-dimensional deformation of the underground cavern cross section of the present invention comprises the following steps:

[0076] 1. According to the actual geological situation and construction conditions of the underground project, determine the cross-section of the underground cavern that needs to be monitored for three-dimensional deformation. According to the accuracy requirements and testing needs, one or more cross-sections to be measured can be arranged. Four positioning base points A, B, C, D, and the four positioning base points are not at the midpoint of each side, and this technical scheme can still be carried out. It is not limited to be at the midpoint position, but being at the midpoint position of each side has certain favorable conditions for measurement. ...

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Abstract

The invention discloses a method for measuring three-dimensional deformation of a cross section of an underground cavity, and belongs to the technical field of rock-mass engineering measurement, so as to iron out the defects that a conventional method cannot accurately measure the three-dimensional deformation of a cross section of an underground space. The method comprises the following steps: arranging four positioning base points A, B, C and D on a to-be-measured cross section, wherein the four positioning base points A, B, C and D are respectively located at four sides of the to-be-measured cross section; taking A as the origin of coordinates, building a three-dimensional coordinate system, and analyzing all positioning base points in the three-dimensional coordinate system; sequentially measuring the initial distance, initial azimuth angle and initial inclination angle between two adjacent positioning base points; calculating the three-dimensional coordinates and spatial correlation values of all initial positioning base points B0, C0 and D0 through corresponding formulas according to the above parameters; sequentially measuring the distance, azimuth angle and inclination angle between two adjacent positioning base points after deformation; and calculating the real-time three-dimensional coordinates, deformation condition and spatial correlation values of Bn, Cn and Dn through corresponding formulas according to the above parameters. The method is suitable for the construction and maintenance of underground engineering.

Description

technical field [0001] The invention belongs to the technical field of rock mass engineering measurement, and in particular relates to a method for measuring the three-dimensional deformation of the cross section of an underground cavern such as an underground roadway. Background technique [0002] After the excavation of the underground cavern, the original rock stress state of the rock mass is destroyed, causing stress redistribution, and the surrounding rock of the underground cavern is displaced to the free surface, and deformations such as bottom heaving, top sinking, and shrinkage of the two sides will occur. feature. The deformation disaster of underground caverns has always been the main factor affecting the safe production of underground engineering. Rock mass displacement and deformation data are the basis for studying the prevention and control of underground cavern deformation disasters. Accurately obtaining the three-dimensional deformation of its cross section...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
Inventor 谭强高明忠张茹徐晓炼邱治强谢晶李圣伟
Owner SICHUAN UNIV
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