Bipolar coordinate solution of pillar stability for salt cavern energy storage
文献类型：期刊论文
| 作者 | Liu, Yuxuan2; Zhang, Guimin1,2; Wang, Zhenshuo3; Li, Hang4; Zhang, Hao2; Liu, Kai5 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 173页码:20 |
| 关键词 | Bipolar coordinate system Salt cavern energy storage Cavern pillar Uncoordinated deformation Stability analysis |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106506 |
| 英文摘要 | As one of the crucial carriers for large-scale deep underground energy storage, salt caverns have great prospects for development. Pillar in salt cavern energy storage (SCES) refers to the preserved rock mass between adjacent salt caverns, which plays a crucial role in maintaining the stability of the SCES. Given the limited research on the analytical solutions for assessing the pillar stability of SCES, this study proposes a stability analysis method that includes horizontal and vertical profiles. In the analysis of the horizontal profile, elasticity theory and the MohrCoulomb strength criterion are comprehensively utilized to determine the critical operating pressure of the cavern, the range of plastic zones, and the stress distribution within the pillar. In the analysis of the vertical profile, the shear stresses and additional axial stress caused by uncoordinated deformation at the interfaces are analyzed. Through case analyses involving different operating modes and pillar widths and by comparing the results with the results of numerical simulations, the following conclusions are drawn: 1) Damage is most likely to occur on one side of the pillar adjacent to the cavern, which is crucial for cavern stability; 2) Maintaining an alternating pattern of high and low pressure (asynchronous injection-production) in two adjacent caverns rather than maintaining equal pressure in two caverns (synchronous injection-production) can reduce the critical operating pressure of the SCES to some extent, thereby improving energy storage efficiency; and 3) When the width of the pillar is low, the radial stress may decrease at the center of the pillar, potentially leading to plastic failure. 4) Uncoordinated deformation causes an increase in the range of the plastic zone around the cavern and increases the likelihood of damage within the interlayer. These findings provide important theoretical methods and guidance for the stability assessment of pillars in SCES. |
| 资助项目 | National Natural Science Foundation of China[42177124] ; National Natural Science Foundation of China[41877277] ; Open Research Fund of the State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME022011] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001327773500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42725]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Guimin |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China 3.Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning, Peoples R China 4.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 5.Jiangsu Suyan Jingshen Co Ltd, Huaian 223200, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yuxuan,Zhang, Guimin,Wang, Zhenshuo,et al. Bipolar coordinate solution of pillar stability for salt cavern energy storage[J]. COMPUTERS AND GEOTECHNICS,2024,173:20. |
| APA | Liu, Yuxuan,Zhang, Guimin,Wang, Zhenshuo,Li, Hang,Zhang, Hao,&Liu, Kai.(2024).Bipolar coordinate solution of pillar stability for salt cavern energy storage.COMPUTERS AND GEOTECHNICS,173,20. |
| MLA | Liu, Yuxuan,et al."Bipolar coordinate solution of pillar stability for salt cavern energy storage".COMPUTERS AND GEOTECHNICS 173(2024):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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