Early-warning system and method for installation of final connector of immersed tunnel

Abstract

The invention discloses an early-warning system and method for the installation of a final connector of an immersed tunnel, and the method comprises a monitoring host and a plurality of sonar altimeters. Two butt joint surfaces of the final connector are respectively provided with at least two sonar altimeters, and two ends of the bottom edges of the butt joint surfaces of the final connector are respectively provided with one sonar altimeter. Each sonar altimeter is connected with the monitoring host, and the monitoring host collects the distance data transmitted by each sonar altimeter. Moreover, when the distance data transmitted by any one sonar altimeter is less than a safety distance, the system gives an alarm for prompt. Because the sonar altimeters are high precision, are good in waterproof performances and are high in reliability and the monitoring host is used for automatically processing the data, the system is high in precision and is reliability.

Description

technical field [0001] The invention belongs to the technical field of installation and construction of final joints of immersed tunnels, and in particular relates to an early warning system and method for installation of final joints of immersed tunnels. Background technique [0002] At present, the underwater distance measurement method of the immersed tube tunnel usually uses a retractable mechanical displacement sensor for measurement. However, when the final joint is docked with the immersed tubes at both ends, the distance between the docking surfaces is small, and the measurement accuracy is required to be high. However, due to the large number of mechanical structures used in the measurement of the retractable mechanical displacement sensor, the reliability is not strong. Once a fault occurs or the distance measurement deviates, it is very likely to damage the final joint, or even cause irreparable consequences. Contents of the invention [0003] The object of the...

AI Technical Summary

Problems solved by technology

However, when the final joint is docked with the immersed tubes at both ends, the distance between the docking surfaces is small, and the measurement accuracy is required to be high

However, due to the large number of mechanical structures, the reliability of the measurement using the retractable mechanical displacement sensor is not strong. Once a fault occurs or the distance measurement deviates, it is very likely to damage the final joint, or even cause irreparable consequences.

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