Microstructure, seepage regimes and stress-strain analysis of bedded rock salt interface
文献类型：期刊论文
| 作者 | Chen, Xiangsheng2; Li, Yinping1; Shi, Xilin1; Liu, Qiang2; Xiong, Tiankai2 |
| 刊名 | JOURNAL OF ENERGY STORAGE
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 120页码:13 |
| 关键词 | Salt cavern energy storage Salt-mud interface Full pore size distribution Seepage regimes Stress-strain analysis |
| ISSN号 | 2352-152X |
| DOI | 10.1016/j.est.2025.116521 |
| 英文摘要 | Bedded rock salt formations have been identified as potential sites for underground hydrogen and helium storage in China. However, the permeability characteristics and mechanical behavior of the interfaces within the bedded rock salt are not yet fully understood, which may pose risks for subsequent large-scale underground energy storage in salt caverns. For this purpose, this study addresses the issue from both microscopic and macroscopic scales. Through X-ray diffraction (XRD), scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP) and nitrogen adsorption tests, the pore size distribution, mineral composition and cementation of the bedded rock salt and its interfaces were examined. Based on these findings, an equivalent permeability model and mechanical model for the salt-mud interface were proposed, and the stress state and gas seepage regimes at the interface were determined. The results show that the minerals at the salt-mud interface are interlocked and cemented, and most of the pores are mesopores and micropores. As a transitional zone for rock permeability and mechanical properties, the interface is subjected to the combined effects of seepage and deformation incompatibility. Gas seepage in bedded rock salt formations primarily follows slip flow, and the permeability needs to be corrected based on the slippage effect. Due to deformation incompatibility, the additional stress derived at the interface alters the stress state of the rock salt and mudstone, making the interlayer at the interface more prone to failure than those outside the interface, which warrants special attention. The findings provide ideas for numerical modeling and theoretical analysis of bedded rock salt interfaces, and also provide support for the safety evaluation of future hydrogen and helium storage in bedded rock salts. |
| 资助项目 | National Natural Science Foundation of China[52208342] ; Jiangxi Provincial Natural Science Foundation[20242BAB23037] ; Jiangxi Provincial Natural Science Foundation[20232BAB204072] ; Jiangxi Association for Science and Technology Foundation[2025QT11] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001464768300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35581]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Xiangsheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn Safety, Wuhan 430071, Hubei, Peoples R China 2.East China Jiaotong Univ, State Key Lab Safety & Resilience Civil Engn Mt Ar, Nanchang 330013, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xiangsheng,Li, Yinping,Shi, Xilin,et al. Microstructure, seepage regimes and stress-strain analysis of bedded rock salt interface[J]. JOURNAL OF ENERGY STORAGE,2025,120:13. |
| APA | Chen, Xiangsheng,Li, Yinping,Shi, Xilin,Liu, Qiang,&Xiong, Tiankai.(2025).Microstructure, seepage regimes and stress-strain analysis of bedded rock salt interface.JOURNAL OF ENERGY STORAGE,120,13. |
| MLA | Chen, Xiangsheng,et al."Microstructure, seepage regimes and stress-strain analysis of bedded rock salt interface".JOURNAL OF ENERGY STORAGE 120(2025):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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