Research Article
Application and Principle of Bolt-Mesh-Cable Control Technology in Extremely Soft Coal Seam Roadway
Table 4
Mechanical parameters of bolt-mesh-cable.
| Support material | Diameter/mm | Dimension/mm | Yield strength/MPa | Rupturing load/kN | Pretightening force/kN |
| Bolt | 22 | 2600 | 335 | 167 | 60 | Cable | 21.6 | 8000/4000 | ā | 607 | 180 | Mesh | 4 | | 235 | 6 | ā |
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