摘要
提出了隧道大变形以及大变形隧道稳定性的概念。分析了产生大变形的机理和判断膨胀性围岩及挤压性围岩的参考标准 ;提出了大变形隧道极限位移状态的概念 ,即通过计算模拟确定大变形隧道的极限位移 ,利用隧道的实测位移和其极限位移判别大变形隧道的稳定性。以隧道周边位移为依据 ,建立大变形隧道稳定性判别准则 ,可以直观地与现场量测联系起来 ,真正体现隧道施工中的反馈信息、指导施工。
This paper proposed the concept of the large deformation and stability of tunnelling.The dilatant or extruded rock will form to larger double deformation than general rock.The reference criteria to distinguish the dilatant and extruded rock were proposed.The limit displacements of large deformation tunnelling were determined by imitation calculation,which is used as the criterion of stability.In this way ,the characteristics of 'feedback'design and construction,and information feedback in NATM can be really expressed.
出处
《石家庄铁道学院学报》
2000年第3期75-78,共4页
Journal of Shijiazhuang Railway Institute
关键词
隧道
大变形
极限位移
计算模拟
稳定性
tunnel large deformation limit displacement imitation calculation
