Stress Relief and Stimulation of Coal Reservoir by Hydraulic Slotting

Table 1

Simulation parameters’ form.

Parameter	Minimum-maximum value	Mean value
Wave velocity (m/s)	1974∼2245	2105
Vision density (kN/m^3)	13.40∼14.13	13.36
Uniaxial compression strength (MPa)	12.74∼16.00	14.64
Uniaxial elastic modulus (GPa)	3.64∼3.91	3.79
Uniaxial deformation modulus (GPa)	2.61∼2.92	2.81
Poisson’s ratio	0.37∼0.42	0.39
Consistent coefficient	1.3∼1.6	1.5
Cohesive force (MPa)	—	10.13
Internal friction angle (°)	—	30.7