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应用自行开发的岩石破裂与失稳RFPA2D系统 ,对含低弹模不同强度的包体试样的破裂模式进行了数值试验 .结果表明 :随着包体强度的增大 ,包体声发射总次数呈明显的下降趋势 ,而包体主破裂位移加载量呈上升趋势 ,试样最大承载力呈上升趋势 ;包体水平轴线上各单元点的剪应力降总是先发生在包体两端位置处 ,当包体强度较小时 ,剪应力降由包体水平轴线中央向其两端扩展 ,当包体强度较大时 ,由包体水平轴线两端向其中央扩展
The rupture modes of inclusions samples with different elastic modulus of low elastic modulus were numerically tested by self-developed RFPA2D system of rock failure and instability.The results show that with the increase of the strength of the inclusion body, the total number of acoustic emission Showed a significant downward trend, while the main body rupture displacement load increased, the maximum load capacity of the specimen showed an upward trend; the shear stress drop of each unit point on the horizontal axis of the inclusion body first occurred at both ends of the inclusion body When the strength of the inclusions is small, the shear stress decreases from the center of the horizontal axis of the inclusions to both ends. When the strength of the inclusions is large,