Dynamic Failure Characteristics of Combination Rock under Different Strain Rates: Insights from SHPB Tests

Table 1

Physical and mechanical parameters of the specimen.

Specimen	P-wave velocity (m/s)	UCS (MPa)	Elastic modulus (GPa)
Granite (H)	3585.3	103.8	83.5
Cyan sandstone (S1)	2526.3	73.0	23.7
Red sandstone (S2)	2369.3	31.6	15.6
H-S1	2942.7	—	—
H-S2	2832.3	—	—
S1-S2	2421.7	—	—