Study on the Soil Structure and Construction Technology of Large Span Double-Arch Tunnel Entrance

In the construction process of tunnel engineering, the construction of the entrance section is one of the crucial procedures. How to improve the construction efficiency and ensure the stability of the tunnel entrance section needs to be considered. Based on the project of a double-arch tunnel, this paper studies the construction techniques of the entrance of the urban double-arch tunnel with a large span. Based on the numerical simulation, it is proved that the construction of tunnel entrance by opening up a cross passage is feasible.

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