复杂条件下地铁车站施工关键技术

在复杂条件下为使地铁车站项目的施工质量、工期、造价和安全目标得以实现,关键施工技术的正确采用至关重要。文章以沈阳中街地铁站为例,针对工程施工所面临的复杂条件,对施工技术路线的确定和施工方案涉及的关键技术进行了分析和探讨。工程实践及良好的施工效果表明,项目施工中采取的注浆加固、大跨度扣拱、超前地质预报以及施工防水等关键技术,对近接建筑物、不稳定地层下开挖大跨度隧道施工中有效控制地表沉降、保护周边建筑物及管线安全起到了关键作用。

Key Construction Technologies for a Subway Station under Complex Conditions

Key construction technologies are quite important to ensure the construction quality,schedule,cost and security of a subway project under complex conditions.In this paper,the determination of a technical approach and the related key technologies are discussed using the Zhongjie Station as an example in order to determine how to choose the correct construction technologies for a subway station under complex conditions.Results show that some technologies,such as reinforcement with grouting,long-span arch construction,geological forecasting and waterproofing,play a key role in effectively controlling ground settlement,protecting surrounding buildings and keeping pipelines safe during the construction of a large-span tunnel near buildings or in unstable ground.