Research Article
Experimental Investigation on Fracture Evolution in Sandstone Containing an Intersecting Hole under Compression Using DIC Technique
Table 1
Basic parameters of specimens.
| | Specimen no. | Density (kg·m−3) | Length (mm) | Width (mm) | Height (mm) | Hole area (mm2) | Note |
| | IS-1 | 2391.37 | 100.10 | 25.00 | 150.10 | 0.00 | Intact specimens | | IS-2 | 2427.49 | 99.60 | 24.90 | 150.50 | | IS-3 | 2467.45 | 100.70 | 24.80 | 150.70 |
| | TI-1 | 2382.43 | 100.50 | 23.00 | 150.80 | 156.58 | Specimens containing a three-way intersecting hole | | TI-2 | 2408.37 | 100.20 | 24.80 | 151.00 | | TI-3 | 2439.81 | 100.40 | 24.70 | 150.90 |
| | FI-1 | 2461.65 | 100.30 | 25.00 | 151.00 | 157.08 | Specimens containing a four-way intersecting hole | | FI-2 | 2439.30 | 100.40 | 23.50 | 150.60 | | FI-3 | 2430.60 | 100.50 | 25.00 | 150.50 |
| | SI-1 | 2424.91 | 100.20 | 25.00 | 150.70 | 157.20 | Specimens containing a shaft-roadway intersecting hole | | SI-2 | 2433.99 | 100.30 | 25.80 | 150.80 | | SI-3 | 2411.55 | 100.60 | 23.40 | 150.50 |
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