摘要
基于层状盐岩体的结构特征,引入已有细观损伤本构模型描述盐岩相的响应特性,运用混合物理论推导得到适合于描述层状盐岩体在三轴压缩过程中损伤演化特性的层状盐岩体细观损伤本构模型,对云应层状盐岩三轴压缩进行计算,分析围压对盐岩所受等效附加侧向应力的影响。计算结果表明,该模型能较好地描述试验现象,其结果对深部盐岩油地下储存和层状盐岩体内的油(气)储库的稳定性分析具有重要意义。
Based on the structural characteristics of bedded salt rock mass,a mesoscopic damage constitutive model is proposed by introducing the existing mesoscopic damage constitutive model and using mixture theory.The damage of Yunying bedded salt rock under triaxial compression is calculated;and the effect of confining pressure on the equivalent additional lateral stress in salt rock is analyzed.The results show that the model can describe the experimental phenomena well;and the experimental results have important significance for the underground oil/gas storage of deep salt rock and the stability analysis of underground storage in bedded salt rock mass.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2010年第11期2304-2311,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(10872220
50774076)
国家重点基础研究发展计划(973)项目(2009CB724603)
关键词
岩石力学
层状盐岩
混合物理论
细观损伤
孔隙压力
rock mechanics
bedded salt rock
mixture theory
mesoscopic damage
pore pressure
