Research Article
Evolution Mechanism of Deformation and Failure of Surrounding Rock during Excavation and Unloading of the High-Stress Rock Mass
Figure 11
Video capture of the failure process in the marble cave wall, (a) 12′75.32″ (σz = 38.68 MPa), (b) 19′35.22″ (σz = 60.88 MPa), (c) 20′57.22″ (σz = 61.06 MPa), (d) 27′28.38″ (σz = 79.65 MPa), (e) 31′14.52″ (σz = 90.84 MPa), (f) 34′43.38″ (σz = 101.53 MPa), (g) 39′26.08″ (σz = 116.65 MPa), (h) 43′53.32″ (σz = 129.03 MPa), (i) 49′01.18″ (σz = 143.33 MPa), (j) 52′73.05″ (σz = 155.21 MPa).
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