ABSTRACT
As an important rail transit infrastructure, the tunnel inevitably has dangerous deformation during its construction and operation. In this paper, considering the impact of the actual environment of the tunnel, the research on the surrounding rock deformation monitoring system based on the multi-sensor information fusion technology is carried out. Firstly, the complete system composition and working principle are proposed. Secondly, the data processing method of surrounding rock deformation based on the multi-sensor fusion technology is studied, and the real-time monitoring of surrounding rock deformation in the actual tunnel environment is realized. Finally, the experimental device is built and the field experiment is carried out. The experimental data shows that the monitoring error of tunnel surrounding rock deformation is not more than 0.13 mm and the standard deviation is not more than 0.06 mm, after comprehensive consideration of the influence of environmental temperature factors. The experimental results show that the proposed tunnel surrounding the rock deformation monitoring system based on multi-sensor information fusion is feasible and has a certain engineering application value.
