Ultrasonic radar-based tunnel structure convergence deformation monitoring system and method

Abstract

The invention discloses an ultrasonic radar-based tunnel structure convergence deformation monitoring system, which comprises ultrasonic radar arranged on the inner wall of a tunnel lining, a metal cover with meshes arranged on the outer surface of the ultrasonic radar, and at least one sound wave positioning device positioned in an ultrasonic transmitting range; the ultrasonic radar comprises three sensor probes and a control module, and the control module is connected with the three sensor probes; the sound wave positioning device comprises at least one reflection lens. The invention furtherdiscloses a ultrasonic radar-based tunnel structure convergence deformation monitoring method. Monitoring is carried out based on ultrasonic waves, the influence of the severe working environment andthe light degree in a tunnel is avoided, long-term development of monitoring work can be guaranteed while the monitoring precision is guaranteed, one piece of ultrasonic radar can be used in cooperation with the multiple sound wave positioning devices on multiple monitoring sections, and the monitoring cost is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering monitoring, and more specifically relates to a tunnel structure convergence deformation monitoring system and method based on ultrasonic radar. Background technique [0002] Tunnels will be affected by various structural diseases during the operation stage. If they are not monitored and controlled, it will not only cause economic losses, but even lead to loss of life and property. Among them, the convergence deformation of the tunnel structure is the most intuitive type of risk expression, and it is also one of the sources of the occurrence and development of structural diseases. Therefore, the monitoring of structural convergence deformation is one of the key concerns of tunnel health operation. [0003] Conventional tunnel convergence deformation monitoring methods are mainly point-type direct measurement method, total station measurement method, and three-dimensional laser scanning ...

AI Technical Summary

Problems solved by technology

For airtight tunnels, using the above-mentioned convergent deformation monitoring method requires firstly that the measurement environment has low dust content and good lighting quality in the tunnel, otherwise the measurement accuracy cannot be guaranteed; A large number of monitoring sections are arranged densely and intensively. Although the existing methods are technically feasible, they require a lot of labor costs. Finally, since the monitoring of tunnel convergence deformation is a long-term and stable process, the current monitoring method uses point-based direct measurement. It is difficult to achieve long-term monitoring with the measurement method and the total station measurement method, and it is difficult to achieve continuous, stable and accurate measurement due to the large impact of the laser scanning method on the environment in the tunnel.

It can be seen that the current method still has certain limitations regarding the long-term monitoring of tunnel convergence deformation.

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