地铁工程建设中的土压/TBM双模式盾构洞内转换刀盘技术

Shield Tunneling Conversion Tool Head Technology with Earth Pressure/TBM Dual Mode in Metro Engineering Construction

以广州地铁工程为依托,阐述多模式盾构的概念,并重点围绕TBM模式转换为土压平衡模式的技术要点展开探讨,涉及转换过程中3个阶段的关键技术,结合软硬交叠地层的特殊性,探索土压平衡/TBM双模式盾构在该地质条件下的模式转换策略,以保证施工顺利进行。

Based on Guangzhou Metro project,this paper expounds the concept of multi-mode shield,and focuses on the technical key points of the conversion from TBM mode to soil pressure balance mode,involving the key technologies of three stages in the conversion process.Combined with the particularity of hard and soft overlapping strata,the mode conversion strategy of earth pressure balance/TBM dual-mode shield tunneling in this geological condition is explored to ensure the smooth construction.