论文部分内容阅读
防止及控制地表塌陷是浅埋暗挖隧道施工的关键及难点;明确地表塌陷产生的原因、诱发因素,并采取相应的技术措施是确保浅埋暗挖隧道施工安全的重要保证。文章结合黄织铁路打括隧道的施工实例,运用普氏平衡拱理论,研究地表塌陷的机制,对引起地表塌陷的原因进行分析,并综合考虑地质条件及施工情况,提出了相应的技术措施,有效避免了地表塌陷事故的发生,并取得了理想的控制效果。该工程对于今后浅埋暗挖隧道预防地表塌陷起到一定的借鉴作用。
Preventing and controlling surface subsidence is the key and difficult point in the construction of shallow-buried tunnel. It is an important guarantee to ensure the construction safety of shallow-buried shoal tunnel by clarifying the causes and inducing factors of surface subsidence and adopting the corresponding technical measures. Combining Platts balance arch theory, studying the mechanism of surface subsidence and analyzing the causes of surface subsidence, taking into consideration the geological conditions and construction conditions, the paper put forward corresponding technical measures, Effectively avoiding the occurrence of surface subsidence accidents and achieving the desired control effect. This project can be used as a reference for the future prevention of ground subsidence due to shallow excavation of undercut tunnels.