Reasonable range of internal pressure of natural gas storage in rock salt mass
Internal pressure has a controlling influence on the stability of cavern of gas storage in rock salt mass.Stress analytical formulas of the rock surrounding cavern,governing conditions and reasonable ranges of internal pressure under static and cycle load conditions for spherical and cylindrical cavern were obtained through mechanical analytical method.Governing conditions were based on tensile failure condition,and plasticity model including Mohr-Coulomb criterion and Drucker-Prager criterion.Calculation results indicated that reasonable internal pressure ranges can prevent a shear or tensile failure of the surrounding rocks,and the internal pressure ranges based on Drucker-Prager criterion are more usable in practical engineering of salt cavern gas storage,because it takes intermediate principal stress into account and its characteristics of three dimensional stress state is consistent with the real force sate of surrounding rocks of cavern.
gas storage in rock salt mass internal pressure variation range analytic method
Wang Zhiyin Zhao Bin Duan Pinjia Zhang Huabin
Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum Be CNOOC Gas & Power Group Beijing China
国际会议
西安
英文
1-4
2012-10-01（万方平台首次上网日期，不代表论文的发表时间）