Study on the Fracture Behavior of Cracks Emanating from Tunnel Spandrel under Blasting Loads by Using TMCSC Specimens

Table 3

Crack initiation angle.

Crack inclination angle (°)		−75	−60	−45	−30	−15	0	15	30	45	60	75	—
Initiation angle (°)	Simulation value	63.28	57.57	51.02	39.49	34.28	21.27	33.40	56.37	68.35	85.12	97.21	—
	Experimental value	63.68	58.81	51.14	39.93	34.49	21.76	33.88	56.69	68.81	85.66	97.70	—