Research Article
Damage Depth Test and Numerical Simulation of Stope Floor in Mining Face
Table 2
Statistical table of borehole construction data.
| | Project | Dip angle (°) | Hole depth (m) | Opening diameter (mm) | Casing length (m) | Final hole diameter (mm) | Bare hole |
| | 3# hole | -19 | 38.02 | 108 | 24.10 | 73 | 24.10 m-38.02 m | | 4# hole | -25 | 38.62 | 108 | 29.90 | 73 | 29.9 m-38.62 m | | 5# hole | -33 | 38.62 | 108 | 26.4 | 73 | 26.4 m-38.62 m |
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