压应力作用不同裂纹分布下岩石破坏过程的数值模拟

Numerical Simulation of Rock Failure Process under Different Crack Distribution under Action of Compressive Stress

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。

Application of instability of rock burst RFPA2 Dsoftware crack under the action of the compressive stress of rock damage numerical simulation research,aiming at the different distribution of crack and the influence of the crack of rock specimen failure process,it is concluded that the different distribution of rock failure process of crack,crack the nearer the rock specimen boundary,the easier rock burst and horizontal crack is larger than the vertical crack effect on rock strength; Another crack effect on rock specimen is different,the direction of the crack is 45°,the lowest rock strength,crack is 90° when the rock strength,the largest crack towards is 0°,rock strength and in the middle.