Research on Key Technology of Shield Continuously Tunnelling Reinforced Concrete Diaphragm Wall
The increasing density of urban rail transit networks has led to numerous engineering challenges in constructing new line tunnels that cross the reinforced concrete diaphragm walls of existing railway stations.This paper proposes corresponding solutions to address challenges such as cutter head and screw conveyor blockages,difficult control of structural disturbance,and high cutting ability requirements during the Suzhou Rail Transit Line 8 tunnelling through diaphragm wall project of existing station of Line 1.The results demonstrate that by implementing a reasonable transformation of the cutter head,reinforcement of stratum,and strict construction control and monitoring,problems such as insufficient cutter head strength,excessive structural disturbance,and stuck cutter heads or screws can be effectively resolved.This study confirms the reasonableness and feasibility of continuously shield tunnelling through reinforced concrete diaphragm walls while providing technical support for similar projects.
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