孔洞形状对围岩极限承载能力影响的分析

Numerical analysis of the hole configuration on ultimate bearing capacity of rock mass

为了研究工程岩体的宏观力学性能,采用数值模拟的方法研究了椭圆形孔洞形状对岩块极限承载能力的影响,找出了孔洞形状与极限承载能力之间的关系,同时研究了岩块声发射随着孔洞形状的变化规律。证明了应用数值模拟方法研究岩块的极限承载能力是研究工程岩体宏观力学参数特别是极限承载能力的有效方法。

The effect of the elliptical hole configuration on ultimate bearing capacity of rock masses was numerically studied to investigate the macroscopic mechanical properties of engineering rock mass in this paper. The relations between the elliptical hole configuration and the ultimate bearing capacity are explained and the changing patterns of the induced acoustic emissions with elliptical hole configurations were also studied. The numerical simulations indicate that it is an effective method to study the macro- mechanical properties of engineering rock-masses, especially the ultimate bearing capacity of rock.