Research Article
Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole
Table 3
Mechanical parameters of coal-rock mass.
| | Density of natural (kg/m3) | Compressive strength (MPa) | Tensile strength (MPa) | Modulus of elasticity (GPa) | Poisson’s ratio () | Angle of internal friction (°) |
| | 1515 | 19.69 | 2.53 | 11.065 | 0.3 | 35 |
|
|
