摘要
本文通过理论分析和模型实验研究了圆形隧道衬砌上的围岩变形压力的时间效应。研究结果表明:作用在隧道衬砌上的围岩变形压力的大小及其分布形式都具有明显的时间效应;在选择设置衬砌的时间时,建议考虑围岩材料的蠕变主时间;围岩内粘塑性流动区随时间的扩展,将导致围岩变形压力随时间增加。另外,还讨论了衬砌上围岩变形压力的分布形式随时间的变化。
In this paper based on theoretical analyses and model tests, the following results are obtained, the deformational pressure of su rrounding rock on the tunnel liners is obviously time, dependent. While choosing lining time. the main creep time of the rock material is suggested to be taken into account, The pressure gets higher steadily as the visco-plastic flow region in rock mass expands with the time. The pressure curves of the rock on liner are changed with the time.
出处
《地下空间》
CSCD
1993年第1期18-25,共8页
Underground Space
基金
高等学校博士学科点基金
关键词
隧道
衬砌
围岩变形
压力
时间效应
Tunnel liner, deformational pressure of surrounding rock, visco elastic flow, time-dependent effect.
