复杂地层超长联络通道施工技术

Construction Technology for Super Long Connecting Passage of Complex Stratum

结合杭州地铁1号线彭埠站～建华站区间1号联络通道施工实例,分析了在高压缩性饱和软黏土、高压沼气层和承压水层的复杂地层中超长联络通道施工风险,提出了针对饱和软黏土喷涌、承压水突涌、沼气逸出和冻结壁融化风险的关键施工技术,对沿海软土地层地铁联络通道施工具有一定的借鉴意义。

Based on the actual construction of connecting passage in Hangzhou Subway Line 1 （Pengbu Station to Jianhua Station）, this paper analyses the risks of construction of super long connecting passage in the high-compression saturated soft clay, and such complicated strata as high-pressure methane layer and artesian aquifer, and presents the key construction tech- niques for the risks of the spray of saturated soft clay, the rush of confined water, the release of methane and the thaw of fro- zen wall, which serves a significant reference for the construction of connecting passage in subway in coastal soft soil.