某地铁区间盖挖逆筑法施工关键技术探讨

Discussions on Key Construction Technology of Cover-excavation Inverse Construction Method in A Subway Interval

盖挖逆筑法由于能有效减少对地面交通的影响、缩短工期、施工质量控制度高、施工安全性大、结构沉降小等特点,在国内外大中城市繁华城区段地下工程建设中有着广泛的应用。但目前国内对这种方法的使用主要局限于高层建筑地下结构以及地铁车站的建设,很少用于地铁区间施工。文章以深圳地铁五号线上水径-下水径区间隧道建设项目为依托,对地铁区间盖挖逆筑法施工中的几个关键性技术进行了分析总结,为类似工程提供参考。

The cover-excavation inverse construction method can effectively reduce the influence on ground transportation and shorten the construction period, with the characteristics of high construction quality control, high construction safety and small structural settlement, thus it has wide range of appli- cation in the construction of underground engineering in the bustling urban area of large and medium- sized cities at home and abroad.But the current domestic use of this method is mainly confined to the construction of high-rise building underground structure and subway station, rarely used for subway interval construction.Relying on the Shangshuijing-Xiashuijing interval tunnel construction project of Shenzhen 5# Subway,this article analyzed several key technologies in the construction of subway in- terval by cover-excavation inverse construction method,thus providing the reference for similar pro- jects.