摘要
断层破碎带隧道围岩稳定性差,为了解超前小导管注浆加固围岩的效果,对隧道的开挖过程进行了三维有限元数值分析,数值计算结果和隧道拱顶下沉量测结果都证明了所选预加固措施的有效性,保证了断层破碎带隧道施工的安全。
Three dimensional finite element method is adopted to simulate the enforcement effect of closelyset small-diameter pilot steel pipes for the tunnel in the fragmentized zone at fault in order to understand the deformational properties of surrounding rock during excavation. Calculation results and field measured data show that the pre-support technique adopted is effective and has guaranteed the safety of the excavation.
出处
《石家庄铁道学院学报》
2006年第2期9-12,38,共5页
Journal of Shijiazhuang Railway Institute
关键词
断层
破碎带
隧道
三维数值模拟
fault
fragmentized zone
tunnel
3D numerical simulation
