Research Article
Theoretical Study and Experiment Validation on Drilling Cutting Weight during the Whole Process of Drilling
Table 4
The fracture radii Rf at various points ahead of the working face (m).
| c1 (MPa) | Distance ahead of working face (m) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 0.8 | 0.145 | 0.156 | 0.166 | 0.176 | 0.187 | 0.197 | 0.207 | 0.217 | 0.227 | 0.236 | 0.246 | 0.256 | 0.265 | 1.0 | 0.122 | 0.130 | 0.139 | 0.148 | 0.156 | 0.164 | 0.173 | 0.181 | 0.189 | 0.197 | 0.205 | 0.213 | 0.221 | 1.2 | 0.106 | 0.113 | 0.120 | 0.128 | 0.135 | 0.142 | 0.149 | 0.156 | 0.163 | 0.170 | 0.177 | 0.184 | 0.191 |
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