Recently，Jointly built by China Railway Construction Heavy Industry and China Railway 18th Bureau“Jin'an No.2”The cutterhead of EPB shield machine breaks through the soil smoothly，It marks the deepest shield section of Taiyuan Metro Line 1.——The section from Yingze East Street Station to Chaoyang Street Station is double-track.。

The section from Yingze East Street Station to Chaoyang Street Station runs through the site.

The section from Yingze East Street Station to Chaoyang Street Station passes through several residential buildings.，The tunnel exists 33‰Large longitudinal slope and small curve radius of 400m tunneling，The maximum buried depth of rail surface of the line is about 43.7 meters，The maximum overburden depth of the tunnel is about 38.8 meters，The interval water level is deep and the water and soil pressure is great.，It is the deepest shield section of Taiyuan Metro Line 1.，The requirements for shield tunneling accuracy control and equipment sealing are extremely high.。

In order to ensure the smooth construction of shield machine underpass，China Railway Construction Heavy Industry Co., Ltd. and China Railway 18th Bureau，In the owner、Under the guidance of experts in the industry，Yes“Jin'an No.2”The shield machine is hinged and sealed、Shield tail brush、Targeted design is carried out for the muck improvement system.，Make the shield machine in the construction line of small turning and large longitudinal slope、Tunneling was successfully completed under the geological conditions of large buried depth and large water and soil pressure.，It laid a solid foundation for the smooth opening of Taiyuan Metro Line 1.。