Rod type longitudinal tunnel settlement measurement rod, equipment and system

Abstract

The invention relates to a rod type longitudinal tunnel settlement measurement rod, equipment and system. The measurement equipment comprises multiple connecting rods which are sequentially connected, multiple elastic connectors used for connecting two adjacent connecting rods as well as at least one wireless transceiving module, wherein at least one connecting rod is provided with a tilt angle sensor, each elastic connector is fixed on a corresponding tunnel segment, and each wireless transceiving module is connected with the corresponding tilt angle sensor; each tilt angle sensor is used for measuring a tilt angle of the corresponding connecting rod, and the corresponding wireless transceiving module is used for transmitting first settlement data representing a relative settlement state of two adjacent tunnel segments. Compared with the prior art, the rod type longitudinal tunnel settlement measurement rod, equipment and system have the advantages that the relative longitudinal position between adjacent segments is obtained through tilt angle measurement of the connecting rods, the size is small, the installation is convenient, wireless data transceiving is adopted to realize long-term automatic all-weather wireless monitoring for the longitudinal tunnel settlement, the theory is clear, the structure is simple and clear, and the cost is low.

Description

technical field [0001] The invention relates to a tunnel longitudinal settlement monitoring technology, in particular to a rod type tunnel longitudinal settlement measuring rod, equipment and system. 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 underground structure of urban rail transit is located in complex stratum conditions, the surrounding environment is changeable, and the train running density is extremely high. Replacement will induce underground engineering disasters, thus putting forward extremely high requirements for the healthy service of urban rail transit underground structures. At present, the health service problems of urban rail transit underground structures have begun to emerge, and the longitudinal settlement of tunnels has become one of the core issues aff...

AI Technical Summary

Problems solved by technology

Static leveling has a large instrument volume and is inconvenient to install. It is not suitable for areas with large height differences and will be affected by factors such as temperature, air pressure, and gravity anomalies.

Manual leveling requires staff to enter the tunnel with instruments, 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

The one-time investment of the electronic level is high, the reuse rate is low, and the integrity is poor

In recent years, people have studied the monitoring methods of longitudinal settlement of tunnels such as laser scanning method and fiber Bragg 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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