Abstract: In view of the low efficiency, high risk factor, and poor accuracy of traditional methods in measuring the structural information of rock mass, a method for measuring the information of tunnel rock mass based on Sirovision was studied. Through quantitative analysis and comparative experiments, the environment factors and work process of measurement were analyzed, and the sources in 3D modeling errors of tunnel surrounding rock under complex tunnel environment were studied. Moreover, corresponding correction methods, such as determining control positions, marking measurement points, and matching photogrammetric points were proposed. The proposed method was applied to the information acquisition and stability analysis of the tunnel rock mass in Yaojiayu tunnel of Binzhou-Laiwu high-speed project, and good results were obtained. The proposed method could be taken as reference for researchers when applying photogrammetry technology to tunnel’s safe construction and support parameter optimization.

Key words: highway tunnel, 3D model, error correction, Sirovision, rock structure, photogrammetry