In-service hydraulic concrete structure internal loss monitoring and early warning system and method

Abstract

The invention discloses an in-service hydraulic concrete structure internal loss monitoring and early warning system and method. The system comprises a remote workstation, a field workstation and an acquisition early warning system. The acquisition early warning system and the field workstation are communicated in a wireless mode, and the field workstation and the remote workstation are communicated in a wired mode or a wireless mode; the acquisition early warning system is arranged on a monitored hydraulic concrete structure body. According to the provided on-line monitoring and early warningsystem for internal loss of an in-service large-volume hydraulic concrete structure, a wireless energy supply and wireless communication mode is adopted between the acquisition early warning unit andthe field workstation, so that the difficulty of on-site layout and later-period pipe transportation is reduced; acoustic emission sensors are arranged in a key monitoring area in a honeycomb array mode, acoustic emission signals accompanied in the damage process of the hydraulic concrete structure body are comprehensively collected, real-time capture of the internal damage of the in-service large-size hydraulic concrete structure can be achieved, and a damage rapid and accurate positioning method is provided.

Description

technical field [0001] The invention relates to an in-service hydraulic concrete structure internal damage monitoring and early warning system and an online monitoring and early warning method for the in-service hydraulic concrete structure internal damage monitoring and early warning system, belonging to the technical field of monitoring and early warning of large-volume hydraulic concrete structure internal damage . Background technique [0002] A considerable number of hydraulic concrete structures in service in my country, such as dams, sluices, and guardrails, were built earlier, limited by the technology and economic level at that time, and their safety monitoring systems were not perfect. As the service time increases, their work behavior changes quietly, and some even enter the "old" stage. In addition, extreme natural events such as earthquakes and typhoons have occurred frequently in recent years, and the harsh service environment has put forward higher requiremen...

AI Technical Summary

Problems solved by technology

According to the conventional practice, each channel requires hundreds of meters of signal cables, and the hundreds of cables are complicated. In addition, cables for other purposes will make site layout and post-operation management quite difficult.

[0005] In addition, the existing acoustic emission source location technology is either complicated to operate and strongly dependent on the experience of technicians, or the accuracy is not enough, making it difficult to accurately locate the internal damage of large-volume structures

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