Research Article
Mechanisms of Crack Initiation and Propagation in Dense Linear Multihole Directional Hydraulic Fracturing
| No. | Principal stress (MPa) | Borehole spacing D (mm) | Arrangement angle of boreholes θ (deg) |
| A | σ1 = 6, σ2 = 5, σ3 = 4 | 141 | 15 | B | σ1 = 6, σ2 = 5, σ3 = 2 | 141 | 15 | C | σ1 = 6, σ2 = 5, σ3 = 2 | 282 | 15 |
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