Research Article
Large Deformation Mechanics of Gob-Side Roadway and Its Controlling Methods in Deep Coal Mining: A Case Study
Table 1
Two-direction hydrofracturing parameters.
| No. | Length of hole (m) | Diameter of hole (mm) | Elevation angle of hole (°) | Included angle between hole and roadway (°) | Hole spacing (m) | Fracturing time (min) | Fracturing interval (m) | Single-hole fracturing times |
| S | 40.5 | 50 | 50 | 90 | 16 | 30 | 2-3 | 10–13 | S′ | 40.5 | 50 | 50 | 3–5 | 8 | 30 | 2-3 | 10–13 |
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