摘要
通过对围岩变形破坏特征进行深入分析,确定了高地应力作用下隧道围岩变形破坏的主要原因,据此提出了相应的支护理念,并进一步提出了超前加固,封闭掌子面,采用双层初支,扩大拱脚等具体控制措施,较好的控制了隧道围岩的变形,保证了隧道的施工安全。
Through analyzing the characteristics of surrounding rock deformation and failure,the major cause surrounding rock under high initial geostress is determined,the supporting ideas are put forward,and the advanced reinforcement,closed constraints,the double steel technologies and expanding arch foot specific control measures are further put forward,the surrounding rock deformation is controlled and the construction safety of tunnel is guaranteed.
出处
《山西建筑》
2013年第13期165-167,共3页
Shanxi Architecture
关键词
高地应力
软岩隧道
变形特征
high initial geostress
weak rock tunnel
deformation characteristic
