三轴压缩下层状盐岩体细观损伤本构模型

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Abstract 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.

Key words： rock mechanics bedded salt rock mixture theory mesoscopic damage pore pressure

Received: 18 May 2010

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/I11/2304

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