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Method for rapidly measuring great section cave dwelling room surrounding rock convergence

A measurement method and large-section technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems of time-consuming and laborious observation effects, low precision, and high monitoring density, and achieve the effect of solving the problem of rapid observation of surface convergence.

Inactive Publication Date: 2014-01-01
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0002] The surface deformation monitoring technology of the tunnel surrounding rock has realized automatic online monitoring or the multi-point and full-section monitoring technology of the engineering vehicle, which has high measurement accuracy and high monitoring density; however, the large-section chamber of the coal mine requires low precision for deformation monitoring, so it is not necessary to adopt High-precision and high-cost deformation monitoring technology for tunnel surrounding rock deformation monitoring
[0003] The convergence observation of existing large-section chambers in coal mines mostly adopts the cross method or the method of well-shaped layout and wiring. Ladders or scaffolding are required, and the measuring tool is a steel ruler. At least two people are required to cooperate with each observation, which is time-consuming and laborious and the observation effect is poor. Difference

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  • Method for rapidly measuring great section cave dwelling room surrounding rock convergence

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with specific embodiments.

[0017] (1) Install a measuring device with a certain angle on one side of the roadway wall, such as figure 1 As shown, the measuring device includes a fixed base 110 and a bracket 111; the angle between the bracket 111 and the horizontal direction is α i , the bracket is A i ;

[0018] (2) Fix the fixed base 110 and the bracket 111 on the surface of one side of the chamber;

[0019] (3) Place the laser rangefinder at an angle α with the horizontal direction 1 、α 2 、α 3 、α 4 and alpha 5 On the bracket, the measured distance from the free end of the bracket to the opposite alley is A i B i ;

[0020] (4) Calculate A i C i =A i B i *cos(α i ),B i C i =A i B i *sin(α i ), the convergence value of two adjacent monitorings is △BC=B i C i -B i-1 C i-1 (height), △AC=A i C i -A i-1 C i-1 (width).

[0021] where A i C i , B i C i is the chamber widt...

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Abstract

The invention discloses a method for rapidly measuring great section cave dwelling room surrounding rock convergence. A laser range finder is used for rapidly observing coal mine great section cave dwelling room surrounding rock convergence, and the problem of rapidly observing surface convergence of a coal mine great section cave dwelling room is solved. Wire arrangement is not needed, the task can be completed by one person, and the rapid measurement method has the advantages of being rapid and convenient to achieve, and the effect of rapidly observing the surface convergence of the coal mine great section cave dwelling room is achieved.

Description

technical field [0001] The invention relates to a method for quickly measuring the convergence of the surrounding rock of a large-section chamber. Background technique [0002] The surface deformation monitoring technology of the tunnel surrounding rock has realized the automatic online monitoring or the multi-point and full-section monitoring technology of the engineering vehicle, which has high measurement accuracy and high monitoring density; however, the large-section chamber of the coal mine requires low precision for deformation monitoring, so it is not necessary to adopt High-precision, high-cost deformation monitoring technology for tunnel surrounding rock deformation monitoring. [0003] The convergence observation of existing large-section chambers in coal mines mostly adopts the cross method or the method of well-shaped layout and wiring. Ladders or scaffolding are required, and the measuring tool is a steel ruler. At least two people are required to cooperate wit...

Claims

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Application Information

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IPC IPC(8): G01B11/16
Inventor 郭敏韦四江马春艳宋常胜任筱芳
Owner HENAN POLYTECHNIC UNIV
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