Research Article
Application of a FBG-Based Instrumented Rock Bolt in a TBM-Excavated Coal Mine Roadway
Table 2
Results of rock bolt pull-out experiment.
| | Number 1 rock bolt | Number 2 rock bolt | Number 3 rock bolt | Number 4 rock bolt | Average |
| (nm/kN) | 0.01013 | 0.01015 | 0.00971 | 0.00998 | 0.00999 | (nm/°C) | 0.00699 | 0.00697 | 0.00652 | 0.00683 | 0.00683 |
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