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应用岩石破裂失稳软件RFPA2D对压应力作用下裂纹岩石破坏进行数值模拟研究,针对裂纹的不同分布及裂纹对岩石试件破裂过程的影响,得出了不同裂纹分布的岩石破坏过程不同,裂纹离岩石试件边界越近,岩石越容易破裂且水平裂纹比竖直裂纹对岩石强度影响大;另外裂纹的走向对岩石试件影响也不同,裂纹走向为45°时,岩石强度最低,裂纹走向为90°时,岩石强度最大,裂纹走向为0°时,岩石强度居于中间。
In this paper, the rock failure instability software RFPA2D is used to simulate the rock failure under compressive stress. According to the different distribution of cracks and the influence of cracks on the fracture process of rock specimens, the rock failure process with different crack distribution is found. The closer the rock specimen boundary, the more likely the rock is to rupture and the horizontal crack has more influence on the rock strength than the vertical crack. In addition, the influence of the crack direction on the rock specimen is also different. When the crack direction is 45 °, the rock strength is the lowest and the crack direction is At 90 °, the rock strength is the highest, and the rock strength is in the middle when the crack direction is 0 °.