Compressed air energy storage(CAES) in underground lined rock caverns(LRC)

with its advantages of long power generation time

large scale

short construction period

flexible site selection

low project cost

long operation period

and environmental friendliness

has demonstrated strong vitality in the field of new energy storage

and will significantly promote the construction of new power systems and the high-quality development of renewable energy. Unlike the operational characteristics of traditional underground spaces

the underground lined rock caverns storing compressed air not only have to withstand alternating high internal pressure expansion during the inflation and deflation process

but also experience significant temperature changes. This article focuses on underground lined rock caverns

elaborates on its working principle and the design concept of flexible sealing structure; in view of the load characteristics such as high pressure

alternating stress

and temperature changes

it systematically analyzes the research progress in related theories and analysis methods of underground lined rock caverns

mainly including the temperature and pressure response in the cavern and the heat transfer characteristics of the sealing structure

the stress path and mechanical response of surrounding rock

the cracking and control standards of reinforced concrete lining

the stability and safe burial depth of overlying rock mass

the sealing layer and the sealing plug

etc.

and provides an outlook on the development trends of the basic principles and analysis methods for underground lined rock caverns.