Modeling of Effect of Intermittent Joint on Circular Roadway Stability
Using the Realistic Failure Process Analysis code (RFPA2D), It is the deformation and nonlinear progressive failure characteristics of circular roadway in deep rock mass as well as the displacement and the stress variation of the key position in roadway periphery that were numerically analyzed, meanwhile, the displacement and AE characteristics of roadway were also studied under ground stress. The authors simulated the effect on roadway stability by intermittent joints in rock mass. When the roadway was excavated, stress state of rock mass around roadway periphery changed from triaxial to biaxial stress conditions. While the stress in roadway surrounding rock is higher than the strength of wall rock, damage zone will occur in roadway surrounding rock with intermittent joints. The shape of damage zone is circular or oval. This study is more useful and significant for further understanding of the stability of roadway in rock mass on the theoretical and practical aspects.
deep rock mass intermittent joint roadway stability numerical simulation
ZHANG Zhe TANG Chunan XU Tao ZHAI Xinxian DUAN Dong LI Feng
Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang 110004, Liaon School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
436-441
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）