摘要
为了解决大断面软弱围岩隧道的施工技术难题,以G30连霍高速公路某隧道工程实例为依托,通过现场隧道拱顶下沉、周边收敛及支护结构受力的监控量测情况,开展大断面软弱围岩隧道合理施工方法的研究。结果表明:微台阶环形开挖预留核心土法能够保证隧道施工安全、质量、进度要求,满足项目建设需要。
In order to solve the construction technical difficulties of large cross section tunnel in soft surrounding rocks,taking tunnel project of the expansion and renovation project which from Qingshuiyi to Zhonghe of the G30 Lianhuo highway,based on the monitoring and measurement of the surrounding convergence and crown settlement and support structure stress situation,a kind of reasonable construction method for large section tunnels in soft surrounding rocks was studied.the results show that the micro step circular excavation with reserved core soil method can ensure the safety,quality,and progress requirements of tunnel construction,and meet the needs of project construction.
出处
《建筑技术开发》
2024年第6期30-33,共4页
Building Technology Development
关键词
大断面
软弱围岩隧道
监控量测
施工方法
large cross section
tunnel in soft surrounding rock
monitoring and measurement
construction method
