Monitoring method and device for horizontal displacement of tunnel based on wireless inclination sensor

Abstract

The invention relates to a method and device for monitoring the horizontal displacement of a tunnel based on wireless tilt sensors. The method for monitoring the horizontal displacement of the tunnel based on the wireless tilt sensors comprises the following steps that (1) a pipeline is arranged on the side wall of the shield tunnel in the longitudinal direction of the shield tunnel, the pipeline and the side wall of the tunnel are fixedly connected at the same height at equal intervals: (2) a monitoring trolley moves forwards in the pipeline, the inclination, relative to the vertical surface, of the position where the trolley is located is measured every time the monitoring trolley travels for a certain distance, and the inclination data obtained through measurement are transmitted to a remote data analysis station in a wireless mode; (3) the remote data analysis station processes the received inclination data, so that a curve of the horizontal displacement, in the longitudinal direction, of the tunnel is obtained. Compared with the prior art, the method and device for monitoring the horizontal displacement of the tunnel based on the wireless tilt sensors have the advantages that data transmission is conducted by means of a wireless sensor network, the limit of the tunnel is not affected on the cross section, monitoring can be conducted normally when a train passes through the tunnel, and automatic, continuous, rapid and wireless monitoring of the horizontal displacement, in the longitudinal direction, of the tunnel is achieved; the method and device have the advantages of being simple, feasible, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of tunnel longitudinal horizontal displacement monitoring, in particular to an uninterrupted and fast shield tunnel longitudinal horizontal displacement monitoring method and device based on a wireless three-axis inclination sensor. Background technique [0002] my country's urban rail transit construction has developed rapidly but has a short history, and there is no consensus on the seriousness of the structural health service problem. As a major underground project, the urban rail transit underground structure is located in complex stratum conditions, the surrounding environment is changeable, and the train operation density is extremely high. If it is replaced, it will induce underground engineering disasters, so it puts forward extremely high requirements for the healthy service of urban rail transit underground structures. At present, the problem of healthy service of urban rail transit underground st...

AI Technical Summary

Problems solved by technology

Theodolite measurement requires staff to enter the tunnel with the instrument, so it cannot realize all-weather monitoring of the tunnel during the operation period, and can only be used for non-operating tunnels, and manual leveling is time-consuming, labor-intensive and inefficient

In recent years, people have researched the monitoring methods of longitudinal and horizontal displacement of tunnels such as laser scanning method and fiber grating, but they also have some insurmountable shortcomings.

Most of the methods such as laser scanning have relatively high cost of equipment and equipment. If a comprehensive inspection is to be carried out, the vehicle needs to be moved. The detection cycle along the entire length of the tunnel is long and the efficiency is low.

Distributed optical fibers and fiber gratings work through optical principles, requiring additional large-scale demodulation equipment, which increases additional costs

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