A tunnel monitoring method and device
A technology of tunnel monitoring and tunneling, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problem of insufficient fineness of monitoring results and achieve the effect of improving fineness
Active Publication Date: 2020-07-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0004] The tunnel monitoring methods used in the traditional tunnel image-based disease monitoring mostly judge the health status of the tunnel through macroscopic geometric deformation and local disease characteristics, etc., which can only be detected after the disease occurs or intensifies, which is a passive method. monitoring method, the monitoring results are not fine enough, so a more refined and rationalized analysis method is urgently needed
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[0041] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the implementation manners and accompanying drawings. Here, the exemplary implementations and their descriptions in this specification are used to explain the present application, but not to limit the present application.
[0042] figure 1 It is a flow chart of a tunnel monitoring method according to an embodiment of this specification. like figure 1 As shown, the tunnel monitoring method may include the following steps.
[0043] S101: Collect the original section point cloud data of the tunnel.
[0044] The original section point cloud data of the tunnel can be collected.
[0045] In one embodiment, a scanner may be used to collect the original cross-sectional point cloud data. figure 2 It is a schematic structural diagram of a collection device in an embodiment of the present inv...
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The application provides a tunnel monitoring and analysis method and apparatus. The method comprises: collecting original cross-section point cloud data of a tunnel; according to the collected data, carrying out point cloud splicing and reflectance image generation respectively to generate an overall tunnel point cloud model and a tunnel pipe wall expansion map; carrying out binarization processing on the tunnel pipe wall expansion map, carrying out parameter mapping on a binary image by using Hough transform and extracting a linear segment of the binary image in a preset angle range; extracting a single pipe piece image in the tunnel pipe wall expansion map based on the linear segment and extracting sub images of a capping block and connecting blocks arranged at two sides in the single pipe piece image respectively based on the single pipe piece image; according to the sub images of the capping block and the connecting blocks at two sides as well as the pixel position of the single pipe piece image, segmenting the overall tunnel point cloud model into small point cloud models; and fitting plans based on the small point cloud models, calculating a dislocated platform height based on the distance between the fitted planes, and analyzing the deformation situation of the tunnel pipe piece.
Description
technical field [0001] The present application relates to the field of computer data processing, in particular, to a tunnel monitoring method and device. Background technique [0002] As the mileage of urban rail transit continues to increase, rail transit is becoming more and more important for people's travel. The daily maintenance of the tunnel system is very important when the rail transit system is facing continuous deformation and aging of the tunnel. By maintaining the tunnel system, not only can the rail transit system support the operation, but also greatly reduce the safety accidents caused by human negligence. [0003] The daily maintenance items of general tunnels include deformation detection, wrong platform, block falling, water leakage, etc. Due to the partial and overall dislocation of the segment, the overall deformation of the segment, etc. are the direct causes of blockage, water leakage and other diseases, therefore, the monitoring of the health status ...
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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 汪俊龚小溪易程刘树亚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS