摘要
通过对华蓥山隧道Ⅲ、Ⅳ、Ⅴ类洞身围岩的位移历时变化特性的分析,提出了不同围岩类别的隧道施工中二次衬砌的合理施作时间和破坏域范围,并将量测位移值与边界元计算结果进行对比,发现二者送变规律具有较好的一致性。
The relationship of surrounding rock displacement with time during excavation of Huayingshan Tunnel with NATM was given an emphatic analysis . As an analytical results of III, IV ,V class rock deformation with time , a reasonable time for permanent support and plastic zones around tunnel after excavation was put forward . After the obtained displacement was compared with calculated results by boundary element program , a simple displacement regularity was reached .
出处
《世界隧道》
1999年第3期28-30,35,共4页
关键词
公路隧道
新奥法
位移量测
施工
Road Tunnel
Displacement Measurement
NATM
Permanent Support
BEM
