Theoretical Calculation and Experimental Analysis on Initial Shock Pressure of Borehole Wall under Axial Decoupled Charge

Table 2

Physical-mechanical parameters of the models.

Specimen number	Density (kg/m^3)	Longitudinal wave velocity (m/s)	Modulus of elasticity (GPa)	Compressive strength(MPa)
1	2247.12	3115	26.44	20
2	2153.24	3067	25.85	30
3	2177.00	3139	24.50	20
Average	2192.45	3100	25.50	23.33