Stability analysis of U-shaped horizontal salt cavern for underground natural gas storage
文献类型：期刊论文
| 作者 | Li, Peng1,2; Li, Yinping1,2; Shi, Xilin1,2; Zhao, Ahu1,2; Hao, Shefeng3; Gong, Xulong3; Jiang, Su3; Liu, Yuan3 |
| 刊名 | JOURNAL OF ENERGY STORAGE
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 38期号:-页码:13 |
| 关键词 | Underground gas storage U-shaped horizontal salt cavern Stability analysis Constant internal gas pressure Cyclic internal gas pressure |
| ISSN号 | 2352-152X |
| DOI | 10.1016/j.est.2021.102541 |
| 英文摘要 | More and more attentions are being paid to horizontal salt caverns for natural gas storage because of their large working gas capacity and favorable stability. To accelerate the construction of gas storage underground salt caverns, stability analysis of this type of cavern is necessary to assure the safety of such caverns. In this paper, the stability is investigated of a U-shaped horizontal salt cavern under different constant and cyclic internal gas pressures. A 3D geomechanical model is established based on sonar scanning in the field and predicted cavern shape. The stability is analyzed of the rock masses around the cavern under different internal gas pressures and cycle frequencies. Five evaluation criteria are proposed to predict the feasibility and stability of such caverns, including deformation, dilatancy safety factor, volume shrinkage, plastic zone, and equivalent strain. The stability of the rock mass around the cavern under different internal gas pressures is compared to that under different cycle frequencies. The results show that the cavern has a good stability under the constant internal gas pressure of 8 MPa and cyclic internal gas pressures ranging from 8 similar to 18 MPa. The five evaluation indexes of the rock masses around the cavern improve with increasing internal gas pressure. It is proposed that the corner, horizontal-roof center, and external waist positions of the cavern are to be highlighted in the design and construction phases. The cycle frequency has appreciable impact on the stability of the rock mass around the cavern. The difference between the volume shrinkage under cycling compared to constant internal gas pressure is that the cycling simulated results show a rising wave-like curve of creep time. The plastic zone ratio increases with creep time and has a flat peak and a sharp bottom with oscillations. This study provides the design parameters for U-shaped salt cavern in the Huaian salt district and can also be a reference for horizontal salt caverns. |
| 资助项目 | National Natural Science Foundation of China[51774266] ; National Natural Science Foundation of China[51874243] ; Youth Innovation Promotion Association CAS[2019324] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000663157300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27480]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Geol Survey Jiangsu Prov, Key Lab Earth Fissures Geol Disaster MLR, Nanjing 210018, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Peng,Li, Yinping,Shi, Xilin,et al. Stability analysis of U-shaped horizontal salt cavern for underground natural gas storage[J]. JOURNAL OF ENERGY STORAGE,2021,38(-):13. |
| APA | Li, Peng.,Li, Yinping.,Shi, Xilin.,Zhao, Ahu.,Hao, Shefeng.,...&Liu, Yuan.(2021).Stability analysis of U-shaped horizontal salt cavern for underground natural gas storage.JOURNAL OF ENERGY STORAGE,38(-),13. |
| MLA | Li, Peng,et al."Stability analysis of U-shaped horizontal salt cavern for underground natural gas storage".JOURNAL OF ENERGY STORAGE 38.-(2021):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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