摘要
通过ANSYS软件,建立包含节理厚度为0.05 m,起伏角为45°的规则节理岩体,并在ANSYS软件中划分网格.将所建模型导入FLAC3D数值模拟软件,对该节理岩体进行不同法向压力和不同剪切速率加载条件下的数值模拟实验.共得到了64组不同压剪条件下岩体的剪切应力,分析了相同法向应力情况下,剪切速率对剪切应力的影响,及相同剪切速率,不同法向应力对剪切应力的影响趋势.同时,对不同剪切速率情况下,岩体的法向应力和剪切应力之间的关系进行线性拟合,拟合结果表明:不同剪切速率情况下,岩体对应的库伦准则存在一定的差异性.
By using the ANSYS software, the rock mass contenting joint with thickness 0.05 m and undulating angle 45o was established, meanwhile the meshing of the model was conducted in ANSYS software. The model was introduced into FLAC3D numerical simulation software, the experiment for the model under different normal stress and different shear speed were done. The 64 groups of shear stress of rock mass under different compression - shear stress were obtained, the influence of shear speed to shear stress of rock mass was analyzed when the normal stress is constant, also when the shear speed is invariable, the analysis for the influence of normal stress to shear stress of rock mass was done. At the same time, the relationship between normal stress and shear stress was linearly fitted, and the fitting result indicated that there existed differences among the corresponding Coulomb criterions when the shear speed was different.
出处
《矿业工程研究》
2013年第3期53-56,共4页
Mineral Engineering Research
基金
国家自然科学基金资助项目(51174088
51274097)
2012年湖南科技大学研究生创新基金资助项目(S120001)
