摘要
以双洞隧道间距对3种隧道结构形式进行划分与比较,将研究对象做一定假设与合理简化,采用理论分析方法,对双洞隧道中间岩柱受力与间距、围岩级别及隧道埋深之间的相互关系进行探讨,推出中间岩柱应力公式,并以此分析不同围岩级别、不同埋深下中间岩柱应力收敛情况,得出双洞隧道合理间距应为一范围值。
Three different types of tunnel structures are divided and studied based on clear interval between two tunnels. Certain assumption and rational simplification are taken for objects to be studied and theoretical analyses are carried out to find out inter relations between stress of shared surrounding rock with interval distance, level of surrounding rock and burying depth of tunnel, and thus, the stress formula of shared surrounding rock is deduced. Furthermore, the constringency of the stress with different surrounding rock levels and different burying depths are analyzed, which make the conclusion that the reasonable clear interval should not be an exact figure but a range.
出处
《公路》
北大核心
2014年第5期26-29,共4页
Highway
关键词
浅埋隧道
中间岩柱
应力分析
间距
研究
shallow tunnel
the shared surrounding rock
stress analysis
interval
