Research Article
Study of the Roof Deformation Characteristics of Roadway Excavation Face and Unsupported Roof Distance
Table 5
Parameters of bolt and anchor cable.
| Name | Diameter (mm) | Length (mm) | Spacing (mm × mm) | Quantity | Preload (kN) | Elastic modulus (Pa) | Cohesive force (Pa) | Stiffness of anchoring agent (Pa) |
| Bolt | 20 | 2,000 | 1,000 × 1,000 | 5 | 80 | 2 × 1010 | 1 × 105 | 2 × 107 | Anchor cable | 15.24 | 6,300 | 2,000 × 3,000 | 2/1/2 | 150 | 2.5 × 1010 | 2 × 105 | 2 × 107 |
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