Design of intelligent monitoring method for tunnel section deformation based on inclined Photogrammetry

Aiming at the problem of inaccurate monitoring caused by too little inclination analysis in traditional monitoring methods, an intelligent monitoring method of tunnel section deformation based on inclined photogrammetry is proposed. Firstly, the tilt photogrammetry technology is analyzed; Secondly, based on the inclined photogrammetry technology, the tunnel section information is extracted, the invalid section information is eliminated, and the section thickness is calculated; then; Based on the back removal of the section, the influence of the section inclination on the tunnel section deformation is determined to realize the final section deformation monitoring; Finally, the tunnel section deformation monitoring method is verified by experiments. The results show that this method can intuitively and comprehensively monitor the overall deformation of the tunnel.

I. INTRODUCTION

At present, China's tunnel construction has entered the peak period. Many tunnels under construction have complex engineering geology and high construction difficulty. Because the mechanical behavior of rock, soil and other media is changing all the time during construction, it is difficult to fully understand the geological situation, which is very likely to cause life safety problems for constructors [1]. In order to ensure the construction safety, we need to monitor the construction project in real time. We can evaluate the safety of tunnel construction according to the monitoring data and optimize the design parameters for the next construction; During the operation of the tunnel, in order to understand the operation status and whether there are potential safety hazards, it is also necessary to monitor the deformation of the tunnel, so the deformation monitoring is very important. If it is not monitored in time, it will cause great property losses and even disasters [2].