Fluid-Solid-Thermal Coupled Freezing Modeling Test of Soil under the Low-Temperature Condition of LNG Storage Tank

Guolong Jin, Xiongyao Xie, Pan Li, Hongqiao Li, Mingrui Zhao and Meitao Zou ()
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Guolong Jin: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
Xiongyao Xie: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
Pan Li: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
Hongqiao Li: China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200090, China
Mingrui Zhao: CNOOC Gas and Power Group, Beijing 100010, China
Meitao Zou: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China

Energies, 2024, vol. 17, issue 13, 1-20

Abstract: Due to the extensive utilization of liquid nature gas (abbreviated as LNG) resources and a multitude of considerations, LNG storage tanks are gradually transitioning towards smaller footprints and heightened safety standards. Consequently, underground LNG storage tanks are being designed and constructed. However, underground LNG storage tanks release a considerable quantity of cold into the ground under both accidental and normal conditions. The influence of cold results in the ground freezing, which further compromises the safety of the structure. Existing research has neglected to consider the effects of this. This oversight could potentially lead to serious safety accidents. In this work, a complete set of experiments using a novel LNG underground storage tank fluid-solid-thermal coupled cryogenic leakage scale model were conducted for the first time to simulate the effect of the tank on the soil temperature field, stress field, and displacement field and to analyze the development of the three fields and the results of the effect. This research helps the related personnel to better design, construct, and evaluate the LNG underground storage tanks to avoid the catastrophic engineering risks associated with cryogenic leakage and helps to improve the design process of LNG underground storage tanks.

Keywords: LNG; storage tank; experiment; freezing; frozen earth (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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