文献类型：期刊文献

英文题名：An Analytical Solution for Mechanical Responses Induced by Temperature and Air Pressure in a Lined Rock Cavern for Underground Compressed Air Energy Storage

作者：Zhou, Shu-Wei[1];Xia, Cai-Chu[1,2];Du, Shi-Gui[2];Zhang, Ping-Yang[1];Zhou, Yu[1]

机构：[1]Tongji Univ, Dept Geotech Engn, Coll Civil Engn, Shanghai 200092, Peoples R China;[2]Shaoxing Univ, Coll Civil Engn, Shaoxing 312000, Peoples R China

年份：2015

卷号：48

期号：2

起止页码：749

外文期刊名：ROCK MECHANICS AND ROCK ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000349889700021)、、EI(收录号：20143600021401)、Scopus(收录号：2-s2.0-84923214255)、WOS

基金：The financial support provided by the National Natural Science Foundation of China (No. 51278378) and the National High-Tech Research and Development Program of China (863 Program, No. SS2012AA052501) is gratefully acknowledged.

语种：英文

外文关键词：Compressed air energy storage (CAES); Lined rock cavern; Temperature; Air pressure; Mechanical response; Analytical solution

外文摘要：Mechanical responses induced by temperature and air pressure significantly affect the stability and durability of underground compressed air energy storage (CAES) in a lined rock cavern. An analytical solution for evaluating such responses is, thus, proposed in this paper. The lined cavern of interest consists of three layers, namely, a sealing layer, a concrete lining and the host rock. Governing equations for cavern temperature and air pressure, which involve heat transfer between the air and surrounding layers, are established first. Then, Laplace transform and superposition principle are applied to obtain the temperature around the lined cavern and the air pressure during the operational period. Afterwards, a thermo-elastic axisymmetrical model is used to analytically determine the stress and displacement variations induced by temperature and air pressure. The developments of temperature, displacement and stress during a typical operational cycle are discussed on the basis of the proposed approach. The approach is subsequently verified with a coupled compressed air and thermo-mechanical numerical simulation and by a previous study on temperature. Finally, the influence of temperature on total stress and displacement and the impact of the heat transfer coefficient are discussed. This paper shows that the temperature sharply fluctuates only on the sealing layer and the concrete lining. The resulting tensile hoop stresses on the sealing layer and concrete lining are considerably large in comparison with the initial air pressure. Moreover, temperature has a non-negligible effect on the lined cavern for underground compressed air storage. Meanwhile, temperature has a greater effect on hoop and longitudinal stress than on radial stress and displacement. In addition, the heat transfer coefficient affects the cavern stress to a higher degree than the displacement.