English：

In response to the unique construction conditions where the shield tunnel of Zhengzhou RailTransit Line 7 forms a close⁃proximity oblique intersection and overpass with the existing curved tunnel ofMetro Line 4, a combined approach of field monitoring and numerical simulation was employed to analyzethe temporal deformation characteristics and spatial deformation patterns of the existing curved tunnel.The results indicate that the deformation of the existing curved subway tunnel caused by the shield tunnelcrossing over it is primarily vertical displacement, which is most pronounced in the section where the newand old tunnels intersect. The temporal deformation pattern follows a sequence of initial settlementfollowed by uplift. In the analysis of spatial deformation characteristics, the vertical displacement curveexhibits a symmetrical “ single⁃peak” distribution, with vertical deformation primarily manifesting asuplift. The model results are generally consistent with field measurements. And this model can be utilizedto guide practical engineering projects.