Abstract：In order to study the global stability of underground storages and the laws of failure and damage，a method for stability analysis of underground energy storage group was developed based on the deformation stability theory. The relation curve of plastic complementary energy versus strength reduction factor served as the global stability and failure criterion of underground storage group，while the unbalanced force was used to indicate the location and pattern of failure. With the yield function as control variable of damage，an analytical method for salt rock was established and applied to study of the relation between the unbalanced force and displacement. The critical cavern spacing，failure patterns and buried-depth of double caverns were presented. Meanwhile，the effect of rock damage around a single cavern on the unbalanced force was studied. The results show that the unbalanced force and plastic complementary energy are suitable for quantitatively evaluating the stability of underground storage group；and the damage analysis based on the yield function provides a new approach to investigate the mechanical behavior of rock in plastic state.
杨 强，潘元炜，邓检强，刘耀儒. 地下盐岩储库群临界间距与破损分析[J]. 岩石力学与工程学报, 2012, 31(9): 1729-1736.
YANG Qiang，PAN Yuanwei，DENG Jianqiang，LIU Yaoru. CRITICAL SPACING AND DAMAGE ANALYSIS OF UNDERGROUND ENERGY STORAGE GROUP IN SALT ROCK. , 2012, 31(9): 1729-1736.
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2012, Vol. 31 
