Strip mine slope deformation on-line monitoring method based on ground trinocular video matching

An open-pit mine and video technology, applied in measuring devices, optical devices, image data processing, etc., can solve the problems of high cost, insufficient precision, low efficiency, etc., and achieve the effect of low cost, high precision and strong robustness

Active Publication Date: 2021-05-28
CHINA UNIV OF MINING & TECH (BEIJING) +1
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is: Aiming at the problems of high cost, low efficiency, and insufficient precision of existing slope deformation monitoring methods, an online monitoring method for open-pit mine slope deformation using ground trinocular video matching is designed

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  • Strip mine slope deformation on-line monitoring method based on ground trinocular video matching
  • Strip mine slope deformation on-line monitoring method based on ground trinocular video matching
  • Strip mine slope deformation on-line monitoring method based on ground trinocular video matching

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Embodiment Construction

[0035] by Figure 1-5 As an example, the implementation process of the present invention and its specific implementation manner will be described in detail.

[0036] 1. Trinocular video layout and camera parameter calibration

[0037] Step 1: If figure 2 As shown, according to the actual monitoring of the slope terrain, video cameras are reasonably arranged on the opposite side of the slope. Specifically, let B nm for camera C n with C m Baseline length between, n, m ∈ {1, 2, 3}, D for three cameras C 1 , C 2 , C 3 The average distance to the central area of ​​the landslide, α nm For two cameras C n with C m The base depth ratio to the center of the landslide, in order to ensure the stable positioning of the long baseline, set the value range of the base depth ratio α according to formula 1, adjust the video shooting angle, and ensure that the video overlap of the monitoring area is greater than 80%. figure 2 As shown, for uninterrupted monitoring, multiple lumino...

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Abstract

The invention discloses a strip mine slope deformation online monitoring method based on ground trinocular video frame matching. The method comprises the steps: firstly, completing parameter calibration of trinocular video cameras by uniformly arranging targets and adopting a post-orientation method; secondly, matching and tracking targets and homonymy features of trinocular video frames at different moments, performing homonymy feature deviation estimation, and automatically identifying deformation features; and then, calculating the three-dimensional deformation quantity of the slope deformation characteristics by utilizing forward intersection of the three groups of video frames, and carrying out time sequence analysis of the three-dimensional deformation characteristics to complete early warning analysis of side slope deformation. Hardware equipment used in the method is low in cost, deformation characteristic capturing and three-dimensional deformation quantity estimation efficiency is high, slope deformation characteristics can be automatically captured, potential landslide areas can be determined in an auxiliary mode, online high-precision three-dimensional deformation monitoring is completed, and the safety requirement for three-dimensional deformation monitoring of the high and steep side slope of the strip mine is met.

Description

[0001] 1. Technical field [0002] The invention belongs to the field of mine measurement, and in particular relates to an online monitoring method for open-pit mine slope deformation by using ground trinocular video frame matching. [0003] 2. Background technology [0004] With the continuous development of my country's open-pit mining technology and equipment, its characteristics of large scale, high efficiency, low cost, and high resource recovery rate have become more and more apparent. Stability issues are prominent, and geological disasters occur frequently. Therefore, the stability evaluation of large high and steep slopes is of great significance for safe mining, sustainable production, and prevention and control of geological disasters in mines. [0005] Traditional high and steep slope stability evaluation methods, such as limit equilibrium method, numerical method, probability method, etc., are simple to operate and easy to implement, but they often ignore informati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G06T7/246G06T7/80
CPCG01B11/16G06T7/246G06T7/85G06T2207/10016
Inventor 许志华郑开慧张永贵张飞徐二帅石晓东向迪周春芳刘宏宇
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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