Study on the construction method and deformation control technology of small interval cross tunnel in water-enriched soil layers

Combined with the engineering practice of small interval cross tunnel located at Shenzhen metro line 5 Taian ~ Yijing road station, this paper points out a theory which contributes to guide the relevant construction by optimized means of construction scheme and numerical simulations. In addition, it details different construction methods of the small interval cross tunnel in water-rich stratum and summarizes the deformation control technology. Finally, it comes to a conclusion that the construction sequence play an important role in the condition of small interval cross tunnel and the grouting makes significant contributions to the construction in water-rich stratum. This paper supports the reference of similar tunnel construction and may promote the development of overlapped tunnels construction.