Tunnel collapse area surrounding rock deformation real-time monitoring method based on video monitoring

Abstract

The invention relates to a tunnel collapse area surrounding rock deformation real-time monitoring method based on video monitoring. The method comprises the following steps: firstly, obtaining a three-dimensional virtual real scene model of a tunnel collapse area by adopting a ground laser scanning technology, wherein the three-dimensional virtual real scene model comprises point cloud data and three-dimensional image data; secondly, according to the position of each camera and the video data of the monitoring collapse area, constructing a transmission projection relationship between the position of each camera and the three-dimensional virtual real scene model of the collapse area; then adopting a trifocal tensor and an antipodal constraint technology to realize positioning of a collapsearea target monitoring point in a multi-view photographic video relative to a reference control point under a spatial three-dimensional coordinate system; and finally calculating a displacement valueof the target monitoring point according to a transmission projection relationship. Non-contact real-time full-time automatic deformation monitoring is realized, the high risk of tunnel collapse areamonitoring is avoided, and the problems that the contact measurement range and cost are limited, and the non-full-time monitoring cannot timely and safely give an early warning are solved.

Description

technical field [0001] The invention relates to a safety monitoring technology for surrounding rock deformation in a landslide area during tunnel construction. The invention belongs to the technical field of geotechnical engineering safety monitoring. It is suitable for non-contact, full-time real-time safety monitoring work in high-risk areas and areas where conventional instruments are difficult to deploy. Background technique [0002] With the development of production, all kinds of civil engineering have sprung up like mushrooms, and are developing in the direction of high, deep and large. Geotechnical engineering testing technology fundamentally guarantees the accuracy of geotechnical engineering investigation, design, management and supervision. Therefore, the accurate testing of geotechnical engineering properties is extremely important. [0003] In order to solve all kinds of complex geotechnical engineering problems, many new theories and new design methods have a...

AI Technical Summary

Problems solved by technology

The invention realizes the non-contact deformation monitoring, avoids the high risk and high risk in the tunnel collapse area, satisfies real-time monitoring, and solves the dilemma that other non-contact deformation monitoring technologies cannot monitor full-time, and the digital data processing process can be automated, thereby achieving Automatic Alert Requirements

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