Self-measurement device and method for rapidly measuring tunnel vault settlement

Abstract

The invention discloses a self-measurement device and method for rapidly measuring tunnel vault settlement. The self-measurement device comprises a device body which is installed at the measurement point of a tunnel through a hoisting ring expansion bolt and an expansion bolt hook; the device body comprises energized solenoids which are symmetrically fixed on the left side and the right side in the device body respectively; the middle part of the device body is fixedly provided with a vertically arranged smooth guide rod; the smooth guide rod is movably sleeved with a magnetic needle; the bottom of the front surface of the device body is sequentially provided with an alarm switch, a power indicator light and an alarm light; the back surfaces of the energized solenoids on the left side andthe right side in the device body are provided with infrared emission and receiving heads respectively; and the device body is also provided with a power box used for mounting a power supply. The self-measurement device provided by the invention effectively overcomes the technical defect that the currently used invar bar drawing generates an error, has the advantage of low cost, can conveniently and rapidly inform a relative monitoring person of a dangerous signal of tunnel vault settlement, is more convenient and rapider to operate and has a very large practical value.

Description

technical field [0001] The invention belongs to the technical field of tunnel measuring devices, in particular to a self-testing device and method for quickly measuring tunnel vault settlement. Background technique [0002] In recent years, with the continuous development of my country's economy and the continuous improvement of infrastructure construction such as highways, high-speed rails, and subways, my country's current progress in tunnel construction has entered a period of rapid development. However, it is also accompanied by the continuous occurrence of various tunnel construction and operation accidents. Due to the lack of understanding of complex conditions such as mountain engineering geology and hydrogeology that tunnels pass through during tunnel construction, cracks in tunnel vaults, cracks in side walls, tunnel frost damage, and water leakage often occur in tunnels built. Therefore, tunnel monitoring plays an important role in safe construction and later oper...

AI Technical Summary

Problems solved by technology

However, the precision level method is very sensitive to light, and is easily disturbed by the construction environment and labor-intensive.

For example, due to the poor light when measuring inside the depth of the tunnel, it may cause errors in the readings of the surveyors

For another example, after the excavation and initial support of the tunnel, the surveyors need to monitor in time, but the construction near the survey point will not truly reflect the settlement of the tunnel vault.

What's more, because each measurement needs to hang the barbed indium steel ruler on the test point, human operation factors have a great impact on the accuracy of the measurement, and the vault settlement measurement point is generally on the center line of the tunnel, and its measurement often affects the tunnel. In normal construction, especially when the position of the measuring point is close to the face of the face, the normal work of the measurement is often affected due to the inability to hang the barbed indium steel ruler on the working platform of the face of the face, and the work intensity is high and the efficiency is low

Although the use of a high-performance total station does not affect the normal construction of the tunnel, it is time-consuming and labor-intensive to use in areas with complex terrain, and the instrument is also relatively heavy. It is time-consuming to assemble and debug the instrument

Therefore, these two methods have a certain impact on the normal construction of the tunnel and the normal use of surveyors.

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