Research Article
Field Experiment Research of the Polycystic Aeration Bolt: Model Design and Anchorage Mechanism
Table 1
The test strategy of pull-out test in situ.
| | The polycystic aeration bolt | Airbag length (mm) | Airbag thickness (mm) | Burial depth (m) | Airbag number | Airbag spacing (mm) | Bolt length (m) | Airbag diameter (mm) | | 500 | 4 | 4.5 | 2 | 500 | 12 | 150 | | 500 | 4 | 4.5 | 4 | 500 | 12 | 150 |
| | The grouting bolts | Bolt length (m) | Bolt diameter (mm) | Burial depth (m) | Grouting length (m) | Trepanning diameter (mm) | | 12 | 28 | 4.5 | 3.5 | 130 |
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