NUMERICAL SIMULATION OF PILLAR FAILURE PROCESS AND STABILITY ANALYASIS
Roof falling and floor heave of roadway and pillar failures are important problems of rock mechanics in mining engineering. In this paper, a numerical code, Realistic Failure Process Analysis (RFPA) developed based on finite numerical analysis method, is applied to simulate the deformation and failure process of the pillars in deep tunneling rock mass. The study focuses on the dip angle of deep tunnels that has significant influence on tunnel stability. The simulated result shows that the dip angle of the laneway plays a significant role in the failure of pillars, and an increase in dip angle may initiate asymmetrical failure at the pillar roof contact on the up-dip side of a room. It suggests that RFPA can be applied to model the pillar and room failure behavior in complicated rock masses.
NUWEN XU CHUNAN TANG ZHENGZHAO LIANG
School of Civil and Hydraulic Engineering Dalian University of Technology, 116023, P.R.China
国际会议
三亚
英文
255-258
2009-05-24（万方平台首次上网日期，不代表论文的发表时间）