期刊
SCIENCEASIA
卷 38, 期 2, 页码 166-174出版社
SCIENCE SOCIETY THAILAND
DOI: 10.2306/scienceasia1513-1874.2012.38.166
关键词
strain energy; thermal effect; strength criterion; elasticity
资金
- Suranaree University of Technology
A multi-axial strength criterion is developed to describe the distortional strain energy density of rock salt at failure as a function of the mean strain energy. The temperature effect on salt strength is implicitly considered by incorporating empirical relations between the elastic parameters and temperatures of the tested specimens. The proposed criterion agrees well with the test results obtained under temperatures ranging from 273-467 K. The proposed criterion is useful and practical for a conservative determination of the stability of compressed-air or gas storage caverns where the surrounding salt is subject to fluctuations of temperature during product injection and withdrawal periods.
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