Experiment and Failure Analysis of Rock-Like Material Affected by Different Excavation Depths

Table 2

Uniaxial compression test results of specimen with single-hole crack.

Conditions and results	C30H0	C30H20	C30H40	C30H60	C30H80	C30H100
Diameter of hole (mm)	10	10	10	10	10	10
Depth of hole (mm)	0	20	40	60	80	100
Length of crack (mm)	30	30	30	30	30	30
Angle of crack (°)	45	45	45	45	45	45
Elasticity modulus (GPa)	6.45	5.5	5.3	4	3.6	2.9
Initial cracking stress	13.54	12.85	8.24	7.24	4.37	4.05
Peak stress	44.38	36.48	31.73	28.48	24.29	19.23
Peak strain	10.85	10.18	10.73	13.18	8.24	10.3