A real-time monitoring method for surrounding rock deformation in tunnel collapse area based on video surveillance

Abstract

The invention relates to a real-time monitoring method for surrounding rock deformation in a tunnel collapse area based on video monitoring. Firstly, the ground laser scanning technology is used to obtain the 3D virtual reality model of the tunnel collapse area, including point cloud data and 3D image data. Secondly, according to the video data of each camera position and monitoring the collapse area, the camera position and the 3D virtual reality scene of the collapse area are constructed. The transmission and projection relationship between the models, and then using the trifocal tensor and epipolar constraint method, realized the positioning of the target monitoring point in the landslide area in the multi-view photography video relative to the reference control point in the three-dimensional coordinate system, and finally based on the transmission projection relationship Calculate the displacement value of the target monitoring point. The invention realizes non-contact real-time full-time automatic deformation monitoring, avoids the high-risk and high-risk monitoring of tunnel collapse areas, and solves the dilemma of contact measurement range and cost limitations, and non-full-time monitoring that cannot provide timely safety warnings.

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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