Method and rail vehicle for full-section comprehensive detection of railway tunnels

Abstract

The invention belongs to the technical field of tunnel detection of railway engineering systems and particularly relates to a method and a rail vehicle for full-section comprehensive detection of railway tunnels. The rail vehicle comprises a rail vehicle floor board, a cab and a carriage. Line-scan cameras are arranged on an arch frame which is arranged on the rail vehicle floor board, air-coupled shield antennas, and a GPS (global positioning system) mainframe, ground penetrating radar and infrared thermal imagers are arranged on the rail vehicle floor board. A GPS receiver is arranged at the top end of the cab, a laser scanner is arranged at the tail of the top plate of the carriage, and an industrial personal computer is arranged in the carriage. By multiple detection systems, one-time full-section detection of tunnel lining states and tunnel bottom damages can be realized, high detection accuracy, high efficiency, shortening of maintenance time and saving of maintenance cost are realized, influences on normal transportation of the railway tunnels are low, and loss caused by stopping of transportation is reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel detection of railway public works systems, and in particular relates to a rail car and a detection method for comprehensive detection of a full section of a railway tunnel. Background technique [0002] By the end of 2015, there were 13,411 railway tunnels in operation across the country, with a total length of 13,038km. China has become the country with the largest number of railway tunnels in the world. However, in the large number of railway tunnels, the overall technical status of the tunnels is poor, and the quality of the tunnels is not optimistic. According to 2014 statistics, there are 5,990 diseased tunnels on the whole road, with a disease rate as high as 52.4%. There are various diseases such as lining quality defects, severe corrosion cracking, deformation of inverted arches, water leakage, and insufficient boundaries, and the number is increasing year by year. trend. In addition, Chi...

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Problems solved by technology

The traditional method is to use a hand-held antenna or a mechanical arm close to the measurement line for detection. Although it can detect the entire section at one time, it requires power outages during the maintenance of skylights during detection on electrified railways, which requires interruption of transportation and interference from the catenary; for Lining cracks are traditionally identified with the naked eye. In order to in-depth test the quality of the lining, the drilling method was used for detection in the early stage. Although it is more intuitive, it will damage the tunnel waterproof and drainage system and the integrity of the lining.

The current detection method is mainly based on manual inspection, the detection results depend on the level of the detection personnel, the speed is slow, the efficiency is low, and the railway skylight time is short, so it is far from meeting the needs of a large number of tunnel projects operating railways in my country

[0004] At present, some different types of tunnel rail cars have been developed at home and abroad, but there are some shortcomings: (1) The disease detection index is single and not comprehensive; (2) The degree of automatic identification is low, and a combination of automatic identification and manual correction is required; (3) ) The detection speed is relatively slow, generally 1-3km / h, which cannot meet the detection requirements of railway tunnels in my country; (4) The foreign advanced special detection equipment is expensive

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