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中文摘要：
目前对于节理岩体各向异性变形参数的解析方法研究不多。假设岩块为各向同性线弹性体,结构面的应力与位移之间满足线性刚度关系,建立多组贯穿节理岩体的正交各向异性变形参数计算模型,相关计算公式简单实用。进一步的研究结果表明:对于贯穿节理岩体,其体积变形具有正交各向异性变形特性,而剪切变形并不具有明显的正交各向异性。最后通过3DEC数值验证与辅助研究,相关数值成果与理论计算相差较小,说明该理论模型对于岩体各向异性变形与稳定性评价有一定的参考价值。
英文摘要：
Natural rock mass usually contains multiple parallel and persistent crack sets. It is important to study the deformation characteristics of rock mass with parallel and persistent cracks in engineering design and stability analysis of surrounding rock mass. On the assumption that rock is isotropic linear elastic body and the stress-displacement relation of crack is linear stiffness relation , the computational model of deformation parameters of rock mass with multiple persistent crack sets is presented by using orthogonal anisotropy elastic theory. The further research shows that the volume deformation of rock mass exhibits orthogonal anisotropy characteristics but the shear deformation does not. Finally,numerical verification of the computational model is carried out by 3DEC software,and the results are in accord with the calculated values. So the model has some reference value in predicting deformation and stability of rock mass.
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