张宁, 王赐佳, 邓树新. 盐岩地下新能源储备库高频注采热力耦合效应对长期形变的影响. 力学与实践, xxxx, x(x): 1-10. doi: 10.6052/1000-0879-20-001
引用本文: 张宁, 王赐佳, 邓树新. 盐岩地下新能源储备库高频注采热力耦合效应对长期形变的影响. 力学与实践, xxxx, x(x): 1-10. doi: 10.6052/1000-0879-20-001
Zhang Ning, Wang Cijia, Deng Shuxin. Influence of high-frequency thermomechanical coupling effect on long-term deformation of salt rock renewable energy storage. Mechanics in Engineering, xxxx, x(x): 1-10. doi: 10.6052/1000-0879-20-001
Citation: Zhang Ning, Wang Cijia, Deng Shuxin. Influence of high-frequency thermomechanical coupling effect on long-term deformation of salt rock renewable energy storage. Mechanics in Engineering, xxxx, x(x): 1-10. doi: 10.6052/1000-0879-20-001

盐岩地下新能源储备库高频注采热力耦合效应对长期形变的影响

INFLUENCE OF HIGH-FREQUENCY THERMOMECHANICAL COUPLING EFFECT ON LONG-TERM DEFORMATION OF SALT ROCK RENEWABLE ENERGY STORAGE

  • 摘要: 盐岩因其致密性被公认为地下储能的良好介质,随着我国双碳战略的提出,利用盐岩进行地下新能源存储备受关注。盐岩新能源储备库运营过程中的高频注采造成了盐岩溶腔温度和应力场的高频往复。本文对高频注采效应下盐岩新能源储库的长期形变进行了热力耦合计算,并与传统能源储库的变形过程进行了对比。结果表明:新能源储库在考虑热力耦合情况下围岩最大位移增大7.8%,相较于传统能源储库,热效应对新能源储备库的影响更为显著,在新能源储库的稳定性评估中应充分考虑热效应的影响。

     

    Abstract: Salt rock cavern is recognized as an ideal medium for underground energy storage because of its integrity. With the proposal of Dual-carbon strategy, salt rock for underground renewable energy storage has attracted much attention. However, the high-frequency injection and production during the salt rock renewable energy storage operation have caused the high-frequency variation of the temperature and stress field in the salt cavern. In this paper, the thermal-mechanical coupling simulation of salt rock renewable energy storage has been conducted to acquire the long-term deformation characteristics under high-frequency injection and production, which is compared with the deformation of traditional salt rock energy storage. The results show that the maximum displacement of the surrounding rock increases by 7.8% when thermal coupling is considered in renewable energy storage. Compared with traditional energy storage, the thermal effect on renewable energy storage is more significant. The influence of the thermal effect should be concerned in the stability assessment of renewable energy storage.

     

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