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首页> 外文期刊>International Journal of Engineering Research and Applications >Simmulation of Rough Rock Joints under Shear Stress
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Simmulation of Rough Rock Joints under Shear Stress

机译：剪切应力作用下的粗糙岩石节理模拟

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摘要

A mass of jointed rock is usually treated as a discontinuum because it is often associated with a heterogeneous nature that comprises intact rock units separated by discontinuities, e.g. joints, faults and bedding planes. The characteristics of rock joints have major influences on the rock mass behavior and the consequent failure mechanism. The shear performance of the rock joints is vastly affected by the morphology of the joint surface, which stands for the joint surface roughness. Therefore, tilting tests are performed on artificial rock samples to investigate the influences of the surface roughness on the shear performance of rock joints. Moreover, a 3D numerical model, based on the Finite Element Method, is proposed in the present study. The results are compared with experimental results of tilting test and with previously published experimental reults of largescale direct shear test and published numerical results performed using Distinct Element Method. The numerical model is used then in a parametric study to illustrate the influence of the morphology of the joint surface on the shear strength.
机译：节理岩块通常被视为不连续体，因为它通常与异质性有关，该异质性包括完整的岩石单元，这些完整的岩石单元被不连续性隔开，例如接头，断层和层理平面。岩石节理的特性对岩体行为及随之而来的破坏机理具有重要影响。节理的剪切性能在很大程度上受节理表面形态的影响，这代表节理表面的粗糙度。因此，对人造岩石样品进行了倾斜测试，以研究表面粗糙度对节理的剪切性能的影响。此外，本研究提出了一种基于有限元方法的3D数值模型。将该结果与倾斜试验的实验结果以及先前发表的大规模直接剪切试验的实验结果进行比较，并与使用离散元方法进行的公开数值结果进行比较。然后，在参数研究中使用数值模型来说明接头表面的形态对剪切强度的影响。

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