Fig. 1. Sketch of laser scanning rock equipment

Fig. 2. Laser rock interaction process

Fig. 3. Surface morphology of laser scanning granite (without airflow assistance)

Fig. 4. Surface morphology of laser scanning granite (airflow assisted by 1 MPa pressure)

Fig. 5. The ablative depth of rock scanning by laser at different speeds with the assistance of high speed airflow and no airflow

Fig. 6. XRD contour map. (a) Granite; (b) granite glass

Fig. 7. Numerical model. (a) Circular Gaussian beam; (b) granite model meshing

Fig. 8. Probe distribution of granite numerical model

Fig. 9. Temperature of each point in the granite under the corresponding scanning speed. (a) 2.5 mm/s; (b) 5 mm/s; (c) 7.5 mm/s; (d) 10 mm/s

Fig. 10. Surface isotherm distribution of 10 mm length rock scanned by laser at different speeds

Fig. 11. Temperature stress of each point in the granite under the corresponding scanning speed. (a) 2.5 mm/s; (b) 5 mm/s; (c) 7.5 mm/s; (d) 10 mm/s