Underground engineering wall rock displacement real-time observation device

Abstract

The invention discloses a wall rock displacement real-time observation device which comprises a computer, a total station, a displacement rotating disk, an inner reflecting diaphragm, an outer reflecting diaphragm and a steel wire, wherein the outer reflecting diaphragm and the displacement rotating disk are coaxially installed; the gray scale of the surface of the outer reflecting diaphragm gradually changes in the tangential direction by using a shaft as the circle center; three windows are uniformly and symmetrically distributed in the displacement rotating disk by using the shaft as the circle center; the end surface of the shaft is provided with the inner reflecting diaphragm; the steel wire is wound around the shaft, the front end of the steel wire is connected with a wall rock measuring point, and the back end is connected with a weight; a measuring point anchorage head is fixedly connected with the rock wall in a wall rock measuring drill hole; the total station is connected with the computer which is provided with software, and the total station can be used for recording total station ranging laser reflected by the inner reflecting diaphragm and total station collimating laser reflected by the outer reflecting diaphragm in real time. The device can simultaneously obtain displacements of measuring points on the surface of and in the wall rock by non-contact observation, and is beneficial to rapid measurement on the deformation and real-time analysis and research on the stability of the underground engineering wall rock.

Description

technical field [0001] The present invention relates to a device for observing the displacement of surrounding rock in underground engineering, more specifically to a device for real-time observation of the surface and internal displacement of surrounding rock, which is suitable for displacement monitoring in the construction of underground projects such as tunnels, caverns, mine roadways, and hydropower plants. monitor. Background technique [0002] Surrounding rock deformation monitoring is an important basis for dynamically adjusting construction plans and determining support timing and parameters in underground engineering construction. The monitoring of surrounding rock deformation in underground engineering includes surface and internal displacement monitoring. The internal displacement of surrounding rock is generally measured by multi-point displacement meter, while the surface displacement of surrounding rock is generally observed by convergent gauge or total statio...

AI Technical Summary

Problems solved by technology

[0005] There are some deficiencies in practical application of this type of technology and corresponding instruments and devices: 1) It is impossible to measure the internal displacement of the surrounding rock and the displacement of the engineering surface at the same time, which affects the real-time performance of data feedback; 2) In order to avoid the two kinds of equipment Due to the mutual influence of the devices, there is a large distance between the displacement measuring points on the surface of the surrounding rock and the opening of the internal displacement measuring hole, which is not conducive to obtaining the real internal displacement of the surrounding rock.

3) For the measurement of the internal displacement of the surrounding rock and the surface monitoring of the convergent meter, it is necessary to manually approach the measurement hole for reading. For large-section underground space projects, it is difficult for personnel to climb up and measure, so it is not easy to implement; and because scaffolding, ladders or platforms are required Vehicles and other assistance, affecting normal construction

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