Research Article
Additional Stress on a Buried Pipeline under the Influence of Coal Mining Subsidence
Table 3
Physical mechanical parameters of the buried natural gas pipeline.
| Elastic modulus, (GPa) | Density, (kg/m3) | Linear expansion coefficient, | Yield stress, (MPa) | Outer diameter, (mm) | Thickness, (mm) | Internal pressure, (MPa) | Ramberg–Osgood model parameters | | |
| 210 | 7,680 | 1.2 × 10−5 | 465 | 660 | 7 | 6.4 | 11 | 24 |
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