Stability Analysis of Irregular Cavities in Tunnel Using Geomagic-COMSOL Coupling Method

The erosion of soluble rock and transformation groundwater result in the high irregularity cavities tunnel. At present, however, karst are mainly simplified as circular, rectangular, or elliptical shape numerical simulation. purpose this paper is to propose a new method analyze stability irregular cavities. First all, we used drilling laser scanning reconstruct three-dimensional point clouds model Furthermore, proposed determining density reduce computational error under premise ensuring accuracy engineering scale. We also developed Geomagic-COMSOL coupling conduct analysis results demonstrated that geometrical has great effects on deformation mechanical properties surrounding rock. displacement equivalent plastic strain exhibited symmetric characteristics, while those highly randomly distributed. noted greater value more intensive can be triggered by shape, compared with cavity shape. showed larger occurred at long-edge part, zone was concentrated sharp turning angle