Research On Tunnel Contour 3D Imaging System Based On Digital Image Correlation Technology

Under the guidance of the national policy of "One Belt and One Road" and accelerating the development of the western region,the pace of infrastructure construction has been accelerated,and the proportion of tunnels in the infrastructure is also increasing.Cities all over the country have formulated the construction targets and plans of railways,highways and municipal roads.Due to the different landforms and geology in different parts of the country,especially in the mountainous areas in western China,due to various restrictions such as terrain,we often use tunnels and Bridges to cross the mountains.In the process of tunnel construction,in order to ensure the construction quality,ensure the tunnel headroom area,the thickness of the primary support and the secondary lining concrete,and prevent the initial support penetration limit,the tunnel section headroom must be measured before spraying concrete and laying the secondary lining waterproof plate.Due to the scarcity of high-precision and low-cost measurement technology and the complex and changeable tunnel construction environment,the original manual tunnel topography measurement method has been far from satisfying the reality.The research on the new tunnel section three-dimensional topography measurement technology,breaking through the limitations of the existing technology,has important academic and engineering application value.Therefore,it is urgent to introduce new technology to change the current situation of tunnel section measurement and enhance the comprehensiveness and accuracy of tunnel section evaluation.Based on the understanding and research of image-related technology,this paper designs and implements a set of remote information management system based on image-related technology of tunnel section 3D imaging technology system.The core development of the enterprise is innovation.This system not only enhances the enterprise’s ability to detect the tunnel section profile,but also enables the enterprise to do special work in the detection of tunnel section profile.At the same time,the core competitiveness of the enterprise has been improved,and the following progress has been made:First,combined with the market demand and the actual needs of enterprise development,the paper referred to a large number of relevant theories and technology research on tunnel section contour detection system,combined with the actual engineering application and purpose oriented,the paper proposed the problems and solutions to be solved by the system.Secondly,according to the working requirements of the tunnel section profile detection system,the hardware and software system framework and the division of the system’s functional modules are determined,and the overall functional design of the system and the detailed design of each functional module are completed.Thirdly,through the research of related hardware and software,the coordinate conversion mode is established,which not only improves the accuracy of detection,but also increases the access efficiency and greatly reduces the operation time.Fourthly,according to the development principles of the system,the system adopts the C/S architecture,while considering the multi-layer framework and front-end page development module,so that the system has the characteristics of friendly pages,easy to use,high expansibility and strong maintenance.