富水砂卵石地层土压平衡盾构钢套筒接收应用实例

Steel Sleeve Receiving Technology for EPB Shield Boring in Water-rich Sandy-cobble Strata

盾构接收作为盾构施工过程中的一个关键工序,具有高风险性。在接收端头无法加固的情况下,如何实现富水砂卵石地层环境下盾构安全接收,是急需解决的一个重大难题。依托长沙地铁一号线黄兴广场站盾构钢套筒接收工程,对该工程中采用的玻璃纤维筋地下连续墙结合钢套筒接收方案技术特点进行剖析,深入研究了在富水砂卵石地层接收端头无加固情况下的盾构接收技术,以期为今后类似工程提供参考。

The receiving of earth pressure balance（EPB） shield is the key to shield tunneling with high risk.It is very important to study the shield receiving without consolidation of receiving end in water-rich sandy-cobble strata.The shield receiving technologies,fiberglass steel underground diaphragm ＋ steel sleeve,for EPB shield boring in waterrich sandy-cobble strata of Huangxing Square Station on Changsha Metro Line No.1 without receiving end consolidation are analyzed.The results can proviole reference for similar projects in the future.