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Theoretical investigation of deformation characteristics of stratified rocks considering geometric and mechanical variability

机译：考虑几何和机械变异性分层岩石变形特征的理论研究

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Anisotropy is one of the most distinct features of stratified rock mass and it must be considered in engineering design and stability analysis. On the basis of linear elastic theory and displacements equivalence, a computational model considering elastic anisotropy was established. The equivalent elastic modulus and equivalent Poisson's ratio of the stratified rock perpendicular and parallel to the loading direction were discussed. The relations of material properties and geometry parameters with the equivalent elastic modulus and equivalent Poisson's ratio in two directions were studied. Uniaxial compressive test was conducted and the elastic modulus and Poisson's ratio in the proposed model agreed well with experimental results. The comparison between a comprehensive set of experimental data and theoretical analysis data proves that the proposed constitutive model can effectively characteristic the mechanical behavior of stratified rocks. The proposed model can consider the effects of material parameters and geometry parameters of rock and joints on the mechanical behavior of stratified rock mass. Moreover, the elastic anisotropy was considered in the model. Thus, the model can supply some valuable reference in studying deformation of stratified rock mass and engineering design.
机译：各向异性是分层岩体最明显的特征之一，必须考虑在工程设计和稳定性分析中。基于线性弹性理论和位移等价，建立了考虑弹性各向异性的计算模型。讨论了分层岩石垂直和平行于装载方向的相同弹性模量和等效泊松比。研究了与等效弹性模量和两个方向上的等效弹性模量和等效泊松比的材料特性和几何参数的关系。进行了单轴压缩试验，并在提出的模型中的弹性模量和泊松比与实验结果很好。一套全面的实验数据和理论分析数据之间的比较证明，所提出的本构模型可以有效地特征分层岩石的力学行为。所提出的模型可以考虑岩石和关节物质参数和几何参数对分层岩体的力学行为的影响。此外，在模型中考虑了弹性各向异性。因此，该模型可以在研究分层岩体和工程设计的变形方面提供一些有价值的参考。

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