The deformation and stress of freezing soil curtain are analyzed by numerical method during the construction of connected aisle at Dalian Road tunnel; and the stability of freezing soil curtain is also evaluated. The distribution laws for displacements and stresses of freezing soils due to the excavating soil are also discussed in detail. Based on the above research

the most dangerous positions of freezing soil curtain lie in the interface between the soil curtain and the built tunnels. It should be noticed more carefully during construction due to the worse effect of freezing here. For alike projects such as freezing soil curtain in Shanghai

the freezing soil curtain with 1.8m thickness can satisfy the demands of construction. Therefore

this paper could be available for the construction of the connected aisle in theory and practice.