Experimental Investigation of Laws during Deformation of Circular Roadway in 10° Inclined Layered Rock

Figure 3

Screenshots of test video according to the loading scheme and phenomenon of deformation; (a)–(d) screenshot of the model in stabilization period after the fifth-seventh loading, respectively; (e)-(f) screenshot of large deformation in lower right area and lower left area which occurred after the eighth loading began, respectively; (g) screenshot of the model when it was destroyed.

(a) 350 min

(b) 380 min

(c) 410 min

(d) 440 min

(e) 443 min

(f) 444 min

(g) 445 min