Abstract In the current energy transition context, salt caverns are promising for massive energy storage but their design methodology needs to be updated to face the challenge of new operating scenarios. This work proposes a new methodology based on the development of a new rheological model that includes dilatancy and tensile criteria, consistent with the long and short term conditions. To illustrate the difference between the classical and the new methodologies, fully coupled thermo-mechanical numerical simulations of a spherical cavern, filled with either methane or hydrogen, and the surrounding rock salt are performed under various cycling scenarios. Although the two studied gases show distinctive thermodynamic behaviors, the storage of hydrogen does not raise new issues in terms of the cavern design. Concerning the operation history, in addition to the fact that lowering the cycling amplitude limits the development of dilatancy and tension, it is observed that employing a high cycling rate leaves the dilatancy unchanged but intensifies the tension, both in extent and magnitude, even for a small cycling amplitude.

中文翻译：

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储能循环加载背景下盐穴设计的剪胀和拉伸准则

摘要 在当前的能源转型背景下，盐穴具有巨大的储能潜力，但其设计方法需要更新以应对新的运行场景的挑战。这项工作提出了一种基于新流变模型开发的新方法，该模型包括剪胀和拉伸标准，与长期和短期条件一致。为了说明经典方法和新方法之间的差异，在各种循环场景下对充满甲烷或氢气的球形洞穴以及周围岩盐进行了完全耦合的热机械数值模拟。尽管这两种研究的气体显示出独特的热力学行为，但在洞穴设计方面，氢气的储存并没有引起新的问题。关于操作历史，