精品文档---下载后可任意编辑郭永军(
中交第一航务工程局有限公司) 摘 要:隧道施工通过浅埋、软弱破裂围岩时会引起围岩应力位移场发生变化,本文采纳 ADINA“”软件以 生 、“”死 单元模拟隧道开挖支护过程进行了三维有限元模拟,对围岩和支护结构应力位移场进行分析,得到浅埋暗挖隧道施工时地表沉降、拱顶下沉、洞内水平收敛随时间变化的规律
并且模拟不同开挖方式对地表沉降、拱顶下沉、洞内水平收敛的影响,对工程实践有着重要的指导意义
关键词:隧道;浅埋暗挖,有限元模拟,ADNIAStudy on the Technology of Excavation Construction Control for Shallow-buried Tunnels in Soft Ground by Drill-blasting Method Guo yong junAbstract: Under the shallow submersion, the soft crag condition with drill-blastingmethod to excavate the tunnel through ground building safely need to solve many technical questions, andcompletes the construction monitoring
This article unified theproject actually to discuss the construction to excavate with micro-vibration the demolition theory and advance the drive pipe note thick liquid support, construction contro