STUDY OF SEALABILITY OF CAVERN FOR NATURAL GAS STORAGE IN DEEP SALT FORMATION BASED ON COMPACTION-DILATANCY BOUNDARY OF SALT
CHEN Jianwen1，2，YANG Chunhe2，GUO Yintong2
(1. Faculty of Engineering，China University of Geosciences，Wuhan，Hubei 430074，China； 2. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：Based on the feasibility analysis of compressed air energy storage in deep rock salt stratum in China，experimental study and theoretical analysis of sealability of rock salt cavern for energy storage are carried out. According to the datum of triaxial compression test for Yingcheng rock salt，the compaction-dilatancy boundary(CDB) of rock salt can be expressed by hyperbolic function for better applicability than the parabolic function，which often used for fitting the CDB of rock salt. Based on the analysis of the expression of compaction-dilatancy theory of rock salt in the principal stress space，the definition and expression of dilatancy approach index(DAI) are proposed. The sealability of rock salt cavern can be analyzed based on the compaction- dilatancy boundary(CDB) theory and a corresponding example is proposed.
陈剑文,杨春和，郭印同. 基于盐岩压缩–扩容边界理论的盐岩储气库密闭性分析研究[J]. 岩石力学与工程学报, 2009, 28(S2): 3302-3308.
CHEN Jianwen1，2，YANG Chunhe2，GUO Yintong2. STUDY OF SEALABILITY OF CAVERN FOR NATURAL GAS STORAGE IN DEEP SALT FORMATION BASED ON COMPACTION-DILATANCY BOUNDARY OF SALT . , 2009, 28(S2): 3302-3308.
