Large-diameter diversion tunnel structure defect multi-dimensional detection device

Abstract

The invention relates to a large-diameter diversion tunnel structure defect multi-dimensional detection device, wherein a tunnel whole-line data model can be quickly established, the structural defect condition of the inner wall of the tunnel can be analyzed, and the detection efficiency is improved. The device comprises an underwater detection unit placed in a large-diameter diversion tunnel and an acquisition processing unit located on a water surface console, wherein the underwater detection unit comprises a base, a vertical frame, a detector, a camera system, an acoustic Doppler velocimeter and an inertial navigation system, the vertical frame is arranged on the base and is provided with the detector and the camera system, the acoustic Doppler velocimeter and the inertial navigation system are mounted on the base, the acquisition processing unit comprises a data acquisition module and a data processing module, and the data acquisition module is used for acquiring data generated by the detector, the camera system, the acoustic Doppler velocimeter and the inertial navigation system in the multi-dimensional detection process of the structural defects of the large-diameter diversion tunnel and transmitting the data to the data processing module for analysis and processing.

Description

technical field [0001] The application relates to the technical field of hydropower engineering, in particular to a multi-dimensional detection device for structural defects of large-diameter diversion tunnels. Background technique [0002] The large-diameter diversion tunnel is a part of the diversion structure of the diversion-type hydropower station. It transports the upstream water of the river section to the vicinity of the power plant through a long distance, and then uses the pressure pipe to divert the water into the hydro-generator unit for power generation. Because of its small construction area , large operating volume, low price and other advantages, it has been more and more used in water transmission projects, hydropower stations and other projects. [0003] Due to the long-term erosion of large-diameter water diversion tunnels, environmental loads, self-vibration, corrosion of river water, material fatigue, crustal changes, aquatic organisms, etc., there may b...

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Problems solved by technology

[0004] At present, the detection technology of large-diameter diversion tunnels is increasingly applied to the detection technology using underwater unmanned systems, mainly using underwater cameras or underwater cameras and two-dimensional imaging sonar mounted on underwater unmanned systems Joint inspection methods, these inspection methods have problems such as small single-trip inspection inspection range, time-consuming and labor-intensive defect detection, and difficulty in determining defect locations, resulting in insufficient detection efficiency

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