Research Article
A New Closed-Form Solution of the Side Abutment Pressure Distribution of Roadway
Table 2
Properties of the surrounding rock and the interface.
| Properties of the surrounding rock | Unit | Value |
| Roof/floor density | kg/m3 | 2500 | Coal density | kg/m3 | 1300 | Roof/floor modulus | GPa | 10 | Coal modulus | GPa | 4 | Roof/floor Poisson ratio | | 0.2 | Coal Poisson ratio | | 0.3 | Coal cohesion | MPa | 1 | Coal friction angle | ° | 25 | Coal tension | MPa | 0.5 | Properties of the interface | unit | Value | Normal stiffness | GPa | 673 | Shear stiffness | GPa | 673 | Cohesion | MPa | 0.1 | Friction angle | ° | 10 | Tension | MPa | 0 |
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