Research Article
Creep Behaviors of Interlayers around an Underground Strategic Petroleum Reserve (SPR) Cavern in Bedded Salt Rocks
Table 2
Creep parameters of natural sample under different stress levels.
| | Strain | | 0.4 | 0.5 | 0.6 | 0.7 |
| | Axial strain | | 2.490 10−3 | 3.625 10−3 | 4.930 10−3 | 7.042 10−3 | | 6.773 × 10−4 | 8.466 10−4 | 1.673 10−3 | 4.870 10−3 | | 3.167 × 10−3 | 4.472 10−3 | 6.603 10−3 | 1.191 10−2 | | 2.62 10−5/h | 3.51 10−5/h | 7.02 10−5/h | 6.32 10−4/h |
| | Lateral strain | | −1.731 10−4 | −6.798 10−4 | −1.667 10−3 | −4.900 10−3 | | −4.682 10−4 | −9.171 10−4 | −3.123 10−3 | −2.049 10−2 | | −6.413 10−4 | −1.597 10−3 | −4.791 10−3 | −2.539 10−2 | | −1.81 10−5/h | 3.81 10−5/h | −1.31 10−4/h | −2.62 10−3/h |
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