Crack Propagation and Fragmentation Characteristics of Single-Flawed Sandstone Samples under Different Loading Conditions

Table 6

Crack types of different kinds of rock samples.

β (°)	0	30	45	60	90
Peak of incident wave 40.7 MPa	II, IV	III, V	III	V	I
Peak of incident wave 61.1 MPa	II, V, VII	V, VII	II, V, VII	V, VII	I, V, VII, VIII
Peak of incident wave 76.5 MPa	IV, V, II, VII, VIII, IX	III, V, VI, VII, VIII, IX	II, III, VII, VIII, IX	V, VII, IX	V, VII, VIII