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No. | Pipeline experiment Reference | Model scale | Test time | Operation temperature | Diameter (mm) | Length (m) | Wall thickness (mm) | Burial depth (m) | Comments |
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1 | Calgary frost heave experiment [45, 118] | Large-scale | 1974 | -10~-7°C | 122 | 12.2 | 10 | 0.7 | Buried in unfrozen soil with high frost susceptibility; with 15 mm insulation |
2 | Caen frost heave test [48, 100] | Large-scale | 1981 | Stage I: -2°C Stage II: -5°C | 273 | 18 | 5 | 0.33 | Half is located in unfrost susceptible sand and a half in frost susceptible silt |
3 | Fairbanks frost heave experiment [7, 45, 119] | Full-scale | 1999 | -10°C | 90 | 105 | 8.5 | 1.8 | The first 30 m of the pipeline is in permafrost and the rest are in talik |
4 | Inuvik pipeline experiment [120, 121] | Large-scale | 1971 | 71°C | 610 | 27 | 1.25 | 1.5 | Warm oil pipeline buried in ice-rich permafrost; operated for six months |
5 | Small-scale pipeline experiment based on the CRCOP [122] | Middle-scale | 2010 | -15~25°C | 108 | 7.8 | 4.5 | 0.25 | Two parallel pipelines, one is insulated and the other is bare |
6 | Centrifuge modeling of Calgary frost heave [123] | Small-scale | 2002 | -10°C | 41.3 (test 1, 2) 22 (test 3) | 0.7 | 1.59 | 0.25 (test 1) 0.57 (test 2) | Centrifuge acceleration: 30 g (test 1), 50 g (test 2), and 55 g (test 3) Test time: 5.5 and 6.25 h |
7 | Centrifuge model of warm oil pipeline [124] | Small-scale | 2018 | Warm: 7°C Cold: 2°C | 11.1 | 0.27 | 0.25 | | Air temperature: -16.83~19.7°C; oil temperature: 2~6°C; two warm pipelines were buried; centrifuge acceleration: 8 g |
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