Research Article
Alteration in Material Properties of an Intact Rock due to Drilling and Bolting Operations
Table 1
Details of specimens tested.
| Serial number | Depth in drill hole from ground surface (m) | Specimen designation | Diameter (mm) | Length (mm) | Virgin | Bolted |
| 1 | 17-18 | T1V | T1B | 58.8 | 117 | 2 | 25-26 | T2V | T2B | 58.8 | 117 | 3 | 36-37 | T3V | T3B | 58.8 | 117 | 4 | 64-65 | T4V | T4B | 54 | 108 | 5 | 79-80 | T5V | T5B | 54 | 108 | 6 | 88-89 | T6V | T6B | 54 | 108 | 7 | 113-114 | T7V | T7B | 54 | 108 | 8 | 115-116 | T8V | T8B | 54 | 108 |
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