Table 1 Physical and mechanical parameters of coal samples.
From: Study on parameter optimization of deep hole cumulative blasting in low permeability coal seams
Name | Coal rock density | Elastic modulus | Poisson's ratio | Tensile strength | Compressive strength |
|---|---|---|---|---|---|
Value | 1.42 | 4.5 | 0.38 | 1.1 | 9.5 |
Unit | g/cm−3 | GPa | – | MPa | MPa |
