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

Table 4

Material model and state equation parameters of the rock.

Density (kg/m^3)	Modulus of elasticity (GPa)	Poisson ratio	Yield stress (MPa)	Tangent modulus (GPa)	Hardening coefficient
2350	61.0	0.31	75.0	2.0	1.0