How does Changsha Metro Line 2 cross Xiangjiang River?

Changsha Metro Line 2 crosses Xiangjiang River in the form of a tunnel.

Changsha Metro Line 2 crosses Xiangjiang River through shield tunnel. Shield tunnel is a kind of tunnel excavated underground by shield machine, which is used to lay railway, subway and other traffic lines. In the construction of Changsha Metro Line 2, shield tunnel is a mode of transportation across Xiangjiang River, which avoids the difficulties and risks of bridge construction or underwater tunnel construction on Xiangjiang River bed. Shield tunnel has played an important role in the construction of Changsha Metro Line 2, ensuring the smooth construction and operation of the line.