歇台子地铁车站双侧壁导坑施工方法研究

Research on the Construction Method of Double Side Wall Heading at Xietaizi Subway Station

摘要: 当前我国城市化进程不断加快，随着城市人口的增长我国地下隧道工程建设规模也在持续扩张。在城市地下隧道工程建设中，经常遇到断层内浅埋的大跨度隧道类型，如果采用常规开挖方法极易引起坍塌，施工风险极大，在地下隧道开挖工程中选择安全可靠的施工方法显得尤为重要。重庆轨道交通18号线歇台子车站实际工程采用双侧壁导坑法进行开挖，施工过程中注意监测控制、预留变形量的设置，顺利通过软弱围岩段，有效控制了总体变形。故本文以重庆轨道交通18号线歇台子车站实际工程为例，阐述双侧壁导坑法在城市地下隧道中的实际应用，以期为类似的建设工程提供借鉴。

Abstract: The current urbanization process in China is accelerating, and with the growth of urban population, the scale of underground tunnel construction in China is also continuously expanding. In the construction of urban underground tunnel projects, it is common to encounter large-span tunnel types that are shallowly buried within faults. If conventional excavation methods are used, it is very easy to cause collapse, and the construction risk is extremely high. Therefore, it is particularly important to choose safe and reliable construction methods in underground tunnel excavation projects. Therefore, taking the actual project of Xietaizi Station of Chongqing Rail Transit Line 18 as an example, this paper briefly expounds the practical application of double wall heading method in urban underground tunnels, with a view to providing reference for similar construction projects.