Experimental Study on Mechanical Properties, Permeability and Acoustic Emission Characteristics of Gypsum Rock Under THM Coupling
文献类型：期刊论文
| 作者 | Lyu, Cheng1; Liu, Jianfeng1,2; Wu, Zhide2; Liu, Hejuan3; Xiao, Fukun4; Zeng, Yin1 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2021-08-02 |
| 页码 | 19 |
| 关键词 | Permeability Failure modes Acoustic emission (AE) Gypsum |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-021-02586-w |
| 英文摘要 | The mechanical properties and permeability of gypsum caprock have a significant influence on the tightness and stability of salt cavern gas storage, a series of tests were carried out to investigate the mechanical properties, permeability and AE characteristics of gypsum under THM coupling in this work. The peak strength of gypsum increases with the increase of confining pressure and the decrease of temperature, the failure and dilatation failure criteria are obtained by utilizing Mogi failure criterion. The permeability decreases with the increase of temperature in the compaction and linear elastic deformation stage, and the final permeability decreases with the increase of temperature under the confining pressure of 5 MPa and 15 MPa, while increase with the increase of temperature under the confining pressure of 25 MPa and 35 MPa. And the permeability decreases with the increase of confining pressure in the whole test process because of the constrain of confining pressure on the formation of microcracks and pores. The best fitting formulas of the relationship between permeability and confining pressure is given by fitting at 25 degrees C and 110 degrees C, which can be expressed by two exponential functions. The AE characteristics also confirmed that the increase of confining pressure and temperature inhibited the formation of microcracks and pores, and the AE peaks have the same hysteresis effect as the stress peaks. It is noted that the peaks of AE ring count increase with the increase of temperature under the confining pressure of 35 MPa. |
| 资助项目 | National Natural Science Foundation of China[U20A20266] ; National Natural Science Foundation of China[51874202] ; Ten Thousands Plan Youth Top Project by the Organization Department of the Central Committee of the CPC ; Major Talent Projects by the Organization Department of the Central Committee of the CPC |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000680360800001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27625]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Jianfeng |
| 作者单位 | 1.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China 2.CNPC Key Lab Oil & Gas Underground Storage Engn, Langfang 065007, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Expt Geotech Mech & Engn, Wuhan 430071, Peoples R China 4.Heilongjiang Univ Sci & Technol, Heilongjiang Ground Pressure & Gas Control Deep M, Harbin 150022, Heilongjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lyu, Cheng,Liu, Jianfeng,Wu, Zhide,et al. Experimental Study on Mechanical Properties, Permeability and Acoustic Emission Characteristics of Gypsum Rock Under THM Coupling[J]. ROCK MECHANICS AND ROCK ENGINEERING,2021:19. |
| APA | Lyu, Cheng,Liu, Jianfeng,Wu, Zhide,Liu, Hejuan,Xiao, Fukun,&Zeng, Yin.(2021).Experimental Study on Mechanical Properties, Permeability and Acoustic Emission Characteristics of Gypsum Rock Under THM Coupling.ROCK MECHANICS AND ROCK ENGINEERING,19. |
| MLA | Lyu, Cheng,et al."Experimental Study on Mechanical Properties, Permeability and Acoustic Emission Characteristics of Gypsum Rock Under THM Coupling".ROCK MECHANICS AND ROCK ENGINEERING (2021):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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