Coupled thermodynamic and thermomechanical modelling for compressed air energy storage in underground mine tunnels

被引:9
作者
Miao, Xiuxiu [1 ]
Zhang, Kai [1 ]
Wang, Jianguo [1 ]
Gao, Yanan [1 ]
Wang, Leiming [2 ]
Guo, Qinghua [3 ]
Chen, Qingliang [4 ]
机构
[1] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China
[2] Univ Sci & Technol Beijing, Key Lab, Minist Educ Efficient Min & Safety Met Mines, Beijing 100083, Peoples R China
[3] China Natl Coal Grp Corp Ltd, China Coal Tianjin Underground Engn Intelligence R, Tianjin, Peoples R China
[4] Guoyuan Shidai Coal Asset Management Co Ltd, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Mine tunnel; Compressed air energy storage system; Lined rock cavern; Steel reinforced concrete; Coupled thermodynamic and; thermomechanical model; Elastoplastic damage model; LINED ROCK CAVERNS; NUMERICAL-SIMULATION; TEMPERATURE; PERFORMANCE; PRESSURE; FAILURE;
D O I
10.1016/j.ijrmms.2024.105717
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Compressed air energy storage (CAES) in underground mine tunnels using the technique of lined rock cavern (LRC) provides a promising solution to large-scale energy storage. A coupled thermodynamic and thermomechanical modelling for CAES in mine tunnels was implemented. Thermodynamic analysis of air during CAES operation was carried out. Difference in temperature and pressure evolution when considering real air thermophysical properties and varying heat transfer properties, as opposed to a simplified thermodynamic model, was revealed. Elastic plane strain (EPS) analysis was implemented to evaluate the influences of initial stress of the lining structure, quality grades of surrounding rock, thermal effect and the cyclic nature of loadings on mechanical behaviour. 3D elastoplastic damage (3DEPD) analysis considering steel reinforced concrete (SRC) lining was implemented to evaluate the damaged mechanical behaviour. Divergences between EPS analysis and 3DEPD analysis were unveiled. It is suggested that, when it comes to tunnel stability, simplifying the thermodynamic model is of least concern, instead, the initial stress of the lining structure is of critical importance and 3DEPD analysis considering SRC lining shall replace EPS analysis. The insights of this study will provide important guidance for the designing and feasibility study of LRC in mine tunnels for application of CAES.
引用
收藏
页数:16
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