Device for arranging monitoring points of tunnel and operating method thereof

Abstract

The invention discloses a device for arranging monitoring points of a tunnel. The device comprises a base, a supporting column, a rotary shaft, columnar pulleys, a counter weight, a cross beam, dials and laser transmitters, wherein the laser transmitters comprise two section positioning laser transmitters and a monitoring point positioning laser transmitter; the dials comprise two monitoring point positioning dials and two section positioning dials; the supporting column is fixedly arranged in the center of the base, the rotary shaft is sleeved and connected to the top end of the supporting column through the columnar pulleys, the cross beam penetrates through the rotary shaft, the monitoring point positioning laser transmitter is fixedly arranged in the center of the cross beam, and the section positioning laser transmitters are connected to two ends of the cross beam; the monitoring point positioning dials are fixedly arranged on two sides of the monitoring point positioning laser transmitter respectively, and the section positioning dials are fixedly arranged inside the section positioning laser transmitters. The device disclosed by the invention guarantees that three monitoring points are located on a same monitoring section and the monitoring section is vertical to the tunnel in axis direction, so that the precision of monitoring results is improved. The monitoring sections at different intervals in position can be realized, so that the monitoring sections are convenient to arrange.

Description

technical field [0001] The invention relates to a device for laying tunnel monitoring points and an operation method thereof. Background technique [0002] With the deepening of the understanding of the mechanical characteristics and complexity of underground engineering, since the 1950s, the world has begun to monitor the stability of surrounding rock and support through on-site measurement of underground engineering, and apply on-site The measurement results correct the design and guide the construction. The principle of on-site measurement is mainly to conduct numerical analysis and theoretical analysis based on the data obtained from on-site measurement, and make a judgment closer to the engineering century, so as to correct support parameters and guide construction. [0003] Vault subsidence and peripheral displacement are mandatory items for monitoring and measurement. The method is to bury three measuring points on a cross-section and use them to obtain corresponding...

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Problems solved by technology

[0003] Vault subsidence and peripheral displacement are mandatory items for monitoring and measurement. The method is to bury three measuring points on a cross-section and use them to obtain corresponding data by extensometer measurement. However, in the current measurement method, the number of measuring points The accuracy of the embedding method is not high, it is difficult to ensure that the three measuring points are on the same section, and it is difficult to ensure that the section is perpendicular to the tunnel axis, which affects the authenticity of the measurement data

[0004] Invention patent (application number: 201110226

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