To solve the structural damage caused by the installation of mechanical and electrical equipment in subway shield tunnels,the technology of pre embedded tunnel segments has developed rapidly.In the practical application of the new external channel technology,there is no need to damage the tunnel body,which can reduce costs,shorten installation time,and lower maintenance costs.This article conducts tests on the tensile,shear,and sliding capabilities of pre embedded channel segments to verify their mechanical properties and confirm the feasibility and safety of external channel technology.Develop three types of workpieces to test the on-site mechanical performance of the groove,in order to ensure that it meets the design requirements and provide technical reference for the application of urban rail pipelines and equipment installation.
NETL
NSTL
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