岩体非协调变形对围岩中的应力和破坏的影响

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Abstract The importance of the incompatible deformation of the deep rock masses is discussed. The mathematical and physical meanings of the incompatible deformation of the deep rock masses are proposed. The method to research the incompatible deformation of the deep rock masses is introduced. The difference between the incompatible and compatible deformation of the rock mass is elaborated. The calculation case of a circular tunnel in the rock masses containing microcracks is given based on the non-Euclidean model. The effects of the incompatible deformation on failure mode and the stress field of the surrounding rock mass is analyzed. The self-equilibrated stresses induced by the incompatible deformation are determined. The influences of the density and the length of microcracks on the self-equilibrated stresses and failure mode are investigated.

Key words： rock mechanics incompatible deformation microcracks non-Euclidean model self-equilibrated stresses

Received: 15 November 2012

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/I4/649

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