Experimental Study on the Evolution Law of Permeability Characteristics of Salt Rocks Under Different Temperatures and Different Pore Pressures
文献类型：期刊论文
| 作者 | Guo, Wenbo3; Li, Jing3; Wang, Tongtao2; He, Tao2; Xie, Dongzhou1; Liao, Youqiang2; Liu, Chufan2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2025-01-12 |
| 页码 | 23 |
| 关键词 | Rock salt Temperature Gas permeability Klinkenberg effect Microcracks Acoustic emission |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-024-04349-9 |
| 英文摘要 | Constructing salt cavern gas storage in deep layers exceeding 1500 m is a significant strategic technology in China. The high temperatures in deep formations significantly affect the permeability characteristics of surrounding rock and influence gas flow via the slippage effect due to the extremely low permeability of rock salt. This study employs scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and mercury intrusion porosimetry to investigate the grain boundaries and porosity of rock salt. The results indicate that the pores in rock salt are significantly smaller than the micron scale, with particles and grain boundaries joined to form a discrete polycrystalline structure and no clear regularity in particle packing density at different locations. Subsequently, helium permeability tests were conducted on large rock salt samples under multiple temperature and pore pressure stages, revealing the permeability characteristics of rock salt during helium seepage under varying temperatures and pore pressures. The results show that temperature primarily influences the permeability of rock salt by altering the size of grains and their arrangement, thereby modifying the size of pore throats. The permeability of rock salt decreases as temperature increases, and the influence of temperature on the slippage effect also diminishes with higher temperatures. Simultaneous acoustic emission monitoring was conducted during the permeability tests to clarify the microcrack characteristics of rock salt during helium seepage under different temperatures and pore pressures. The results indicate that fewer microcracks are generated during high-temperature gas seepage, while more microcracks occur during low-temperature seepage. The analysis of the acoustic emission spectrum reveals that, at lower temperatures, larger intergranular cracks are predominant, whereas, at higher temperatures, smaller intergranular cracks dominate. The findings provide essential experimental evidence for the design, construction, and operational safety of salt cavern gas storage. |
| 资助项目 | National Science and Technology Major Project[2024ZD1004107] ; National Science and Technology Major Project[42072307 41972138 52404066] ; National Natural Science Foundation of China[2021CFA095] ; Outstanding Youth Fund of Hubei Province[2024040701010062] ; Outstanding Youth Fund of Hubei Province[2024040801020255] ; Natural Science Foundation of Wuhan |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001394848500001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37862]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Tongtao |
| 作者单位 | 1.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.China Univ Petr, Coll Pipeline & Civil Engn, Qingdao 266580, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Wenbo,Li, Jing,Wang, Tongtao,et al. Experimental Study on the Evolution Law of Permeability Characteristics of Salt Rocks Under Different Temperatures and Different Pore Pressures[J]. ROCK MECHANICS AND ROCK ENGINEERING,2025:23. |
| APA | Guo, Wenbo.,Li, Jing.,Wang, Tongtao.,He, Tao.,Xie, Dongzhou.,...&Liu, Chufan.(2025).Experimental Study on the Evolution Law of Permeability Characteristics of Salt Rocks Under Different Temperatures and Different Pore Pressures.ROCK MECHANICS AND ROCK ENGINEERING,23. |
| MLA | Guo, Wenbo,et al."Experimental Study on the Evolution Law of Permeability Characteristics of Salt Rocks Under Different Temperatures and Different Pore Pressures".ROCK MECHANICS AND ROCK ENGINEERING (2025):23. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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