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Tunnel monitoring method based on three-dimensional laser scanning

A three-dimensional laser and tunnel technology, which is applied to earth drilling, mining equipment, mining equipment, etc., can solve the problems of heavy workload, small amount of data, and low efficiency

Active Publication Date: 2017-07-07
CCCC SECOND HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional monitoring measurement is to monitor the points of some tunnel sections, which has the disadvantages of low efficiency, less data volume, heavy workload, and high cost, and it is necessary to bury monitoring points in advance. These monitoring points may be damaged due to construction and other reasons. As a result, the data cannot be collected or the data is uncertain

Method used

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  • Tunnel monitoring method based on three-dimensional laser scanning

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Embodiment 1

[0032] Such as figure 1 As shown, the present invention provides a tunnel monitoring method based on three-dimensional laser scanning, comprising the following steps:

[0033] a. Use a 3D laser scanner to scan the initial support monitoring section of the tunnel to obtain the 3D point cloud data of the initial support monitoring section of the tunnel;

[0034] b. After the three-dimensional point cloud data obtained in step a is denoised, the denoised point cloud data is spliced ​​to obtain the overall point cloud data of the initial support monitoring section of the tunnel;

[0035] c. Set multiple monitoring and measuring sections with different mileages according to the tunnel surrounding rock grade and site construction plan, and set multiple monitoring points on each monitoring and measuring section, and then find the location of each monitoring and measuring section according to the horizontal curve and vertical curve of the tunnel design. The corresponding position in ...

Embodiment 2

[0053] Such as figure 2 As shown, the present invention provides a tunnel monitoring platform using a tunnel monitoring method based on three-dimensional laser scanning, including a data processing platform and a tunnel safety monitoring platform, wherein the data processing platform includes an engineering management module, a monitoring measurement module and an invasion analysis module, The tunnel safety monitoring platform module includes a tunnel deformation intelligent prediction module, a tunnel monitoring result statistics module and an invasion limit statistics module. The project management module specifically includes: (1) setting and managing the codes used for file names and tunnel attributes in the entire project; managing and adding tunnel engineering information, tunnel horizontal curve, vertical curve, primary branch design section, and second lining design section information. (2) The tunnel scanning data is automatically entered into the corresponding proje...

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Abstract

The invention discloses a tunnel monitoring method based on three-dimensional laser scanning. The tunnel monitoring method comprises the following steps that a, scanning is conducted to obtain three-dimensional point cloud data of a tunnel; b, the three-dimensional point cloud data are subjected to denoising and splicing treatment, and overall point cloud data of the tunnel are obtained; c, a monitoring measuring cross section and a monitoring point are set, a certain range of point cloud data are extracted to conduct normal distribution fitting by taking the monitoring point as the center, and calculating is conducted to obtain an arch apex setting value and a periphery convergence value; d, an arch apex setting pre-warning threshold value and a periphery convergence pre-warning threshold value of the tunnel are determined according to the tunnel monitoring standard, when the arch apex setting value or the periphery convergence value which is obtained in the step c exceeds the arch apex setting pre-warning threshold value or the periphery convergence pre-warning threshold value, alarming is conducted automatically; and e, the step a to the step d are repeated at intervals. Based on three-dimensional laser scanning, monitoring of arch apex setting and periphery convergence of the tunnel, tunnel limit exceeding analysis and secondary lining thickness evaluation are achieved, monitoring working efficiency is improved, and the monitoring range is widened.

Description

technical field [0001] The invention relates to the field of tunnel monitoring. More specifically, the present invention relates to a tunnel monitoring method based on three-dimensional laser scanning. Background technique [0002] Tunnel monitoring and measurement is an indispensable part of tunnel engineering and an important means to ensure the safety of tunnel engineering. The traditional monitoring measurement is to monitor the points of some tunnel sections, which has the disadvantages of low efficiency, less data volume, heavy workload, and high cost, and it is necessary to bury monitoring points in advance. These monitoring points may be damaged due to construction and other reasons. As a result, the data cannot be collected or the data is uncertain. [0003] Three-dimensional laser scanning uses laser ranging to obtain the three-dimensional coordinates of the tunnel. Compared with traditional total stations, it does not need to bury reflectors in advance. It has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18E21F17/00
CPCE21F17/00E21F17/18
Inventor 张永涛陈培帅杨钊冯德定江鸿
Owner CCCC SECOND HARBOR ENG
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