Numerical Investigation on Rock-Fracturing Mechanism by Using Splitter under Hole Assistance

Table 2

Rock mechanical parameters of JH2 model.

Parameter	Value
Reference density	2630 kg/m^3
Uniaxial compressive strength	122.2 MPa
Uniaxial tensile strength	9.5 MPa
Poisson’s ratio ν	0.30
Intact rock bulk modulus K	25.7 GPa
Intact rock shear modulus G	16.9 GPa
Strength constants
Hugoniot elastic limit (HEL)	4.5 GPa
Intact strength constant A	1.01
Intact strength exponent N	0.83
Strain rate coefficient C	0.005
Fractured strength constant B	0.65
Fractured strength exponent M	0.72
Max fractured strength ratio	0.5
Pressure constants
Intact rock bulk modulus K1	25.6 GPa
Polynomial EOS constant K2	−4500 GPa
Polynomial EOS constant K3	3e5 GPa
Failure constants
Hydro tensile limit (HTL)	−54 MPa
Damage constant D1	0.005
Damage constant D2	0.7
Bulking factor β	0.5
Type of tensile failure	Hydro