Back to Search Start Over

Research of interlayer dip angle effect on stability of salt cavern energy and carbon storages in bedded salt rock

Authors :
Ge, Xinbo
Huang, Jun
Zhou, Kang
Su, Ke
Wang, Wei
Li, Yinping
Shi, Xilin
Source :
Geoenergy Science and Engineering; December 2024, Vol. 243 Issue: 1
Publication Year :
2024

Abstract

In order to clean and decarbonize energy, large-scale underground energy storage in salt caverns can be utilized. The construction and safety evaluations for these caverns are crucial, especially for salt caverns with significant interlayer dip angles. Aimed at the bedded salt rocks for energy and carbon storage, this study focuses on the impact of different interlayer dip angles on the stability of underground energy and carbon storage caverns in bedded salt rock formations in China. Four salt caverns with varying interlayer dip angles of 0–30° were established for stability comparison. Numerical simulations reveal that caverns with high interlayer dip angles demonstrate low volume shrinkage, general deformation resistance and small equivalent strain, while exhibiting a larger volume of plastic zones compared to caverns with lower interlayer dip angles. It is important to consider the deformation of the cavern wall rock in the down-dip direction for caverns with high interlayer dip angles. The presence of inclined interlayers affects the symmetry of the contour distribution of deformation, safety factor and equivalent strain. Furthermore, recommendations are provided for the construction of salt caverns in salt rock formations with high interlayer dip angles.

Details

Language :
English
ISSN :
29498929 and 29498910
Volume :
243
Issue :
1
Database :
Supplemental Index
Journal :
Geoenergy Science and Engineering
Publication Type :
Periodical
Accession number :
ejs67343312
Full Text :
https://doi.org/10.1016/j.geoen.2024.213291